Статті в журналах: "Source inductance"

1

Dilys, Justas, and Voitech Stankevic. "A Simple Method for Stator Inductance and Resistance Estimation for PMSM at Standstill." International Journal of Robotics and Control Systems 2, no. 3 (July 20, 2022): 477–91. http://dx.doi.org/10.31763/ijrcs.v2i3.741.

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An accurate stator resistance and inductance are necessary for high-performance permanent magnet synchronous motor (PMSM) control. The stator resistance and inductance can be estimated during motor standstill operation. This study proposes a standstill estimation method for the determination of dq-axis inductances and resistance of a PMSM drive system fed by a conventional voltage source inverter (VSI). The proposed method estimates both inductance and the rotor's position using the same algorithm, and knowledge of its initial position is not required. The d- and q-axis inductances were estimated by applying three short-time voltage pulses and measuring phase current peak values. The stator's resistance is estimated by monitoring the exponential decay process of the direct axis current. The method was verified by simulation and experiments conducted on two different PM synchronous motors. A good agreement of simulation and experimental results was obtained. Moreover, the proposed method is relatively simple and can identify stator resistance and inductance at any motor load condition. Compared to the existing parameter estimation strategies, the proposed estimation scheme has a relatively faster estimation time. Additionally, it is shown that the method accounts for the dead-time effect as well.

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2

Lind, Anders. "Source-Sense Packages for HV MOSFETs." International Symposium on Microelectronics 2013, no. 1 (January 1, 2013): 000770–75. http://dx.doi.org/10.4071/isom-2013-wp64.

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In traditional 3-pin High-Voltage (HV) power MOSFET (MOSFET) packages, the hard-switching transition speed is limited by the package source-inductance because the MOSFET drain current and gate current both share a path through the same package source inductance. The details of this mechanism are discussed and the resulting additional switching power loss caused by it is both measured and simulated. Proposed innovative “Source-Sense” packages split the two currents into separate paths by adding separate source-pin for Kelvin-type driver connection to gate-source on the chip, thus completely eliminating all switching loss incurred by the source inductance for improved efficiency and lower die temperature. Leadless SMD packages employing this method are explored for further addressing complications caused by package source inductance, such as common-mode noise and requirement for filtering. Advanced package concepts are discussed for future optimization and thermal management, and versatility of these advanced concepts as well as existing leadless SMD packages with “Source-Sense” is examined.

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3

Kaczorek, Tadeusz. "Positive electrical circuits and their reachability." Archives of Electrical Engineering 60, no. 3 (September 1, 2011): 283–301. http://dx.doi.org/10.2478/v10171-011-0026-3.

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Positive electrical circuits and their reachabilityConditions for the positivity of linear electrical circuits composed of resistances, coils, capacitors and voltage (current) sources are established. It is shown that: 1) the electrical circuit composed of resistors, coils and voltage source is positive for any values of their resistances, inductances and source voltages if and only if the number of coils is less or equal to the number of its linearly independent meshes, 2) the electrical circuit is not positive for any values of its resistances, capacitances and source voltages if each its branch contains resistor, capacitor and voltage source, 3) the positiven-meshes electrical circuit with only one inductance in each linearly independent mesh is reachable if all resistances of branches belonging to two linearly independent meshes are zero.

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4

Kim, Woochan, Jongwon Shin, and Khai D. T. Ngo. "Direct-Bond-Copper Switch Module for Management of Temperature and Noise in 220-W/in3 Power Assembly." Journal of Microelectronics and Electronic Packaging 11, no. 4 (October 1, 2014): 174–80. http://dx.doi.org/10.4071/imaps.435.

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Achieving high-power density is a challenge in the presence of stringent specifications on temperature rise and switching noise. Integration of the direct-bond-copper module with PCB mother board was found to be the right approach to achieve 220-W/in3 power density, 2-kW output power, and 48.9°C junction-temperature rise. The reduced layout inductance (2.89 nH) at the source and the negative coupling between source and drain layout inductances suppressed turn-off noise. The prototyped dc-dc boost converter switched between 400 kHz to 1 MHz without self-turn-on problems.

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5

Aebischer, H. A. "Inductance Formula for Square Spiral Inductors with Rectangular Conductor Cross Section." Advanced Electromagnetics 8, no. 4 (September 10, 2019): 80–88. http://dx.doi.org/10.7716/aem.v8i4.1074.

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Planar spiral coils are used as inductors in radio frequency (RF) microelectronic integrated circuits (IC’s) and as antennas in both radio frequency identification (RFID) and telemetry systems. They must be designed to a specified inductance. From the literature, approximate analytical formulae for the inductance of such coils with rectangular conductor cross section are known. They yield the direct current (DC) inductance, which is considered as a good approximation for inductors in RF IC’s up to the GHz range. In principle, these formulae can simplify coil design considerably. But a recent comparative study of the most cited formulae revealed that their maximum relative error is often much larger than claimed by the author, and too large to be useful in circuit design. This paper presents a more accurate formula for the DC inductance of square planar spiral coils than was known so far. It is applicable to any design of such coils with up to windings. Owing to its scalability, this holds irrespectively of the coil size and the inductance range. It lowers the maximum error over the whole domain of definition from so far down to . This has been tested by the same method used in the comparative study mentioned above, where the precise reference inductances were computed with the help of the free standard software FastHenry2. A comparison to measurements is included. Moreover, the source code of a MATLAB® function to implement the formula is given in the appendix.

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6

Kim, Woochan, Jongwon Shin, and Khai D. T. Ngo. "DBC Switch Module for Management of Temperature and Noise in 220-W/in3 Power Assembly." International Symposium on Microelectronics 2014, no. 1 (October 1, 2014): 000744–50. http://dx.doi.org/10.4071/isom-wp52.

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Achieving high power density is a challenge in the presence of stringent specifications on temperature rise and switching noise. Integration of the DBC module with PCB mother board was found to be the right approach to achieve 220-W/in3 power density, 2-kW output power, and 48.9°C junction-temperature rise. The reduced layout inductance (2.89-nH) at the source and the negative coupling between source and drain layout inductances suppressed turn-off noise. The prototyped dc-dc boost converter switched between 400 kHz to 1 MHz without self-turn-on problems and efficiency was 98.4 % by employing DBC switch module.

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7

Pei, Yao, Yann Le Bihan, Mohamed Bensetti, and Lionel Pichon. "Comparison of Coupling Coils for Static Inductive Power-Transfer Systems Taking into Account Sources of Uncertainty." Sustainability 13, no. 11 (June 2, 2021): 6324. http://dx.doi.org/10.3390/su13116324.

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The present work aims at comparing different coupling coils by taking into account sources of uncertainty for static inductive power-transfer (SIPT) systems. Due to the maximum transmission efficiency for the SIPT system related to the mutual inductance between coils, the key point here is to make use of a sparse polynomial chaos expansion (PCE) method to analyze the mutual inductance between the transmitter and the receiver. A fast postprocess-sensitivity analysis allowed the identification of which source of uncertainty was the most influential factor to the mutual inductance for different coupling coils. Furthermore, in view of the relationship between the maximum transmission efficiency and the ratio of the length of wires of a coil and the mutual inductance, circular coupling coils should be recommended for SIPT systems.

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8

Lin, Faa-Jeng, Syuan-Yi Chen, Wei-Ting Lin, and Chih-Wei Liu. "An Online Parameter Estimation Using Current Injection with Intelligent Current-Loop Control for IPMSM Drives." Energies 14, no. 23 (December 4, 2021): 8138. http://dx.doi.org/10.3390/en14238138.

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An online parameter estimation methodology using the d-axis current injection, which can estimate the distorted voltage of the current-controlled voltage source inverter (CCVSI), the varying dq-axis inductances, and the rotor flux, is proposed in this study for interior permanent magnet synchronous motor (IPMSM) drives in the constant torque region. First, a d-axis current injection-based parameter estimation methodology considering the nonlinearity of a CCVSI is proposed. Then, during current injection, a simple linear model is developed to model the cross- and self-saturation of the dq-axis inductances. Since the d-axis unsaturated inductance is difficult to obtain by merely using the recursive least square (RLS) method, a novel tuning method for the d-axis unsaturated inductance is proposed by using the theory of the maximum torque per ampere (MTPA) with the combination of the RLS method. Moreover, to improve the bandwidth of the current loop, an intelligent proportional-integral-derivative (PID) neural network controller with improved online learning algorithm is adopted to replace the traditional PI controller. The estimated the dq-axis inductances and the rotor flux are adopted in the decoupled control of the current loops. Finally, the experimental results at various operating conditions of the IPMSM in the constant torque region are given.

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9

Ay, Yasar. "A neutron source with 1014 DT neutron yield." International Journal of Modern Physics E 28, no. 11 (November 2019): 1950097. http://dx.doi.org/10.1142/s0218301319500976.

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The developed spherical plasma focus model is used in this study to investigate the optimum neutron yield in terms of the gas pressure, cathode radius and external inductance. The optimum values for these parameters are found separately. Then, the charging voltage is varied from 25[Formula: see text]kV to 35[Formula: see text]kV with 1[Formula: see text]kV increment by using these separately found optimum values to see the rate of increase in neutron yield. While the used gas pressure range is 1–40[Formula: see text]Torr with 1[Formula: see text]Torr increment, cathode radius range is 11.5–17[Formula: see text]cm with 0.5[Formula: see text]cm increment. External inductance is varied from 10[Formula: see text]nH to 150[Formula: see text]nH with 5[Formula: see text]nH increment. The optimum values for gas pressure, cathode radius and external inductance are found to be 26[Formula: see text]Torr, 15[Formula: see text]cm and 75[Formula: see text]nH, respectively. Even though combining these separately found optimum values of pressure, cathode radius and external inductance does not necessarily form an optimized set of operational conditions for the SPF, they lead to a higher neutron yield in that while neutron yield with these separately found optimum values at 25[Formula: see text]kV charging voltage is [Formula: see text] (higher than the measured neutron yield of [Formula: see text] at 25[Formula: see text]kV), it increases to [Formula: see text], when charging voltage is increased to 35[Formula: see text]kV. Using these values shows that spherical plasma focus device can be used as a neutron source with high neutron yield (on the order of [Formula: see text]).

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10

Wang, Xiang Guo, and Masayuki Yamamoto. "A Study on Fastening the Switching Speed for Wide Bandgap Semiconductor Based Super Cascode." Materials Science Forum 963 (July 2019): 823–26. http://dx.doi.org/10.4028/www.scientific.net/msf.963.823.

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The Super Cascode is a series connected structure with a normally-off low voltage Si-MOSFET and multiple normally-on wide bandgap semiconductors. It has low switching losses compared with silicon based bipolar devices, and low on-resistance and low cost compared with other single high voltage normally-off wide bandgap semiconductor devices. In practice, however, there are inevitable parasitic inductances, which result in the increase of switching losses. The method is proposed to eliminate the common-source inductances (CSIs), such as using stack-die configuration with each device and adding an additional inductance in the gate loop of Si-MOSFET. It is numerically shown that the rise and fall times of the proposed method were 33.5% and 7.2% faster than the conventional one, respectively.

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11

Oskirko, V. O., A. P. Pavlov, A. Z. Zakharov, V. A. Semenov, M. I. Azhgikhin, and A. A. Solovyev. "Power supply output inductance effect on arc parameters of high-power impulse magnetron sputtering." Journal of Physics: Conference Series 2291, no. 1 (July 1, 2022): 012022. http://dx.doi.org/10.1088/1742-6596/2291/1/012022.

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Abstract The paper studies the influence of the power supply output inductance on the arc parameters, which form on the sputtered target surface during high-power impulse magnetron sputtering. The arc energy, lifetime and maximum current are measured by the up-to-date power source and the proposed arc simulation circuit at various output inductance values. The experimental data are compared with the simulation results. The paper presents a brief model description for the arc parameter calculations. According to the experimental data, the decrease in the output inductance leads to the increase in the peak current, arc lifetime and energy. It is shown that the energy recuperation stored in the output inductance allows reducing the arc energy. Also, self-locking of control transistor occurs at a lower value (∼1 µH) of the output inductance, leading to the reduction in the current amplitude and the additional decrease in the arc energy.

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12

Nakamura, Takuto ,,, Takuya Hirata, Eko Setiawan, and Ichijo Hodaka. "A Practical Method for Estimating Mutual Inductance in Wireless Power Transmission System." International Journal of Circuits, Systems and Signal Processing 16 (June 1, 2022): 1027–34. http://dx.doi.org/10.46300/9106.2022.16.125.

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This paper proposes a practical method for estimating mutual inductance in wireless power transmission system based on the principle of electromagnetic induction. Conventional estimation methods utilize a voltage, current, and phase of current in transmitter side, while our method requires only an amplitude of the voltage and current in transmitter side. Our method is designed so that the mutual inductance can be estimated under challenging situation which there is a measurement noise. Numerical simulations show that if the system has a small mutual inductance, a relative error and standard derivation of estimated mutual inductance tend to become larger. However, it will be shown that these factors can be improved to make a voltage of voltage source in the system high.

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13

Krainyukov, Alexander, Igor Lyaksa, and Rodions Saltanovs. "Research Of The Efficiency Of The Wireless Power Transfer With The Employment Of DD Inductance Coils." Transport and Telecommunication Journal 16, no. 4 (December 1, 2015): 341–52. http://dx.doi.org/10.1515/ttj-2015-0031.

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Abstract The paper is devoted to using of DD inductance coils for the wireless power transfer. The aim of the given research is to determine influence of the parameters of resonance transformer on the efficiency of the wireless power transfer with the use of the DD inductance coils. Experimental installation of the wireless power transfer by a resonance inductive method was constructed. Experiments were performed with it help. Research results show influence of the distance between the coils of inductance, of the resonance transformer frequency, of the storage source voltage and of the temperature conditions on the efficiency of the wireless power transfer.

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14

Guo, Xiaorui, Peiliang Wang, and Yanfeng Wang. "Simulation Analysis of Improved Construction and Control Strategy for Programmable AC Power Source." International Journal of Online Engineering (iJOE) 11, no. 7 (August 31, 2015): 41. http://dx.doi.org/10.3991/ijoe.v11i7.4766.

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Novel circuit topology and advanced control technique of inverter are research focus for programmable AC power source. An improved dual buck half bridge inverter topology is introduced and the central symmetrical pulse width modulation mode is proposed to double the output current ripple frequency. High output precision can be achieved by optimizing the output waveforms of inverter. Then, a hybrid digital control scheme combining PID control with repetitive control as well as inductance compensation deadbeat control is presented for the closed loop voltage regulation of the mentioned inverter. Besides, an inductance saturation characteristic mathematic model is established for accurate simulation. Simulation results show that the theoretical analysis of the special switching sequence and hybrid control scheme is true.

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15

FOK, C. W., and D. L. PULFREY. "FULL-CHIP POWER-SUPPLY NOISE: THE EFFECT OF ON-CHIP POWER-RAIL INDUCTANCE." International Journal of High Speed Electronics and Systems 12, no. 02 (June 2002): 573–82. http://dx.doi.org/10.1142/s0129156402001472.

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The importance of on-chip power-rail inductance in generating delta-I power-supply noise is examined in this paper using systematic circuit simulation of the complete integrated-circuit power net. This source of noise is compared to the resistive IR drop in the net, and to the delta-I noise due to both high-inductance- and low-inductance-bonding packages. Results are presented for a typical on-chip power net in 0.18 μm CMOS technology, and it is demonstrated that the inductance of this on-chip power net is the dominant contributor to the full-chip power-supply noise. The simultaneous switching events which produce the triggering current transients for the delta-I noise are taken to arise from core-logic switching; the mitigating, de-coupling role of the capacitance of non-switching gates within the core-logic block is considered.

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16

Shurupov, Alexei, Alexander Kozlov, Mikhail Shurupov, Valentina Zavalova, Anatoly Zhitlukhin, Vitalliy Bakhtin, Nikolai Umrikhin, and Alexei Es’kov. "Pulse-Current Sources for Plasma Accelerators." Energies 11, no. 11 (November 7, 2018): 3057. http://dx.doi.org/10.3390/en11113057.

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The pulse source for plasma-accelerators supply operates under the conditions of nonlinear growth of load inductance, which complicates the matching of the source and the load. This article presents experimental studies of the use of both traditional pulse-energy sources based on capacitive storage and alternative ones based on explosive magnetic generators (EMG). It is shown that the EMG with the special device of the current-pulse formation more effectively matches with such a plasma load as the pulse plasma-accelerator (PPA). This device allows a wide range to manage the current-pulse formation in a variable load and, consequently, to optimize the operation of the power source for the specific plasma load. A mathematical model describing the principle of operation of this device in EMG on inductive load was developed. The key adjustable parameters are the current into the load, the residual inductance of the EMG, and the sample time of the specified inductance and the final current in the load. The device was successfully tested in experiments with the operation on both one and two accelerators connected in parallel. In the experiments, the optimal mode of device operation was found in which the total energy inputted to a pair of accelerators in one pulse reached 0.55 MJ, and the maximum current reached about 3.5 MA. A comparison with the results of experiments performed with capacitive sources of the same level of stored energy is given. The experiments confirmed not only the principal possibility of using EMG with a special device of current-pulse formation for operation with plasma loads in the MJ energy range but also showed the advantages of its application with specific types of plasma load.

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17

Krylov, Denis, and Olga Kholod. "THE INFLUENCE OF THE INPUT INDUCTANCE ON THE QUALITATIVE INDICATORS OF ACTIVE CONTROLLED RECTIFIER." Bulletin of the National Technical University «KhPI» Series: New solutions in modern technologies, no. 1(7) (April 23, 2021): 18–23. http://dx.doi.org/10.20998/2413-4295.2021.01.03.

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The main part of electricity is used by industrial plants in a converted form and the use of semiconductor converters is growing rapidly. The requirements for the quality of semiconductor converters are increased. And their impact on the power supply, load and related consumers is increased too. One of the most popular converters in the segment of low and medium power drives is a frequency converter made on the basis of a three-phase stand-alone voltage inverter. A significant disadvantage of such converters is the use of a diode rectifier at the input of the circuit, which has disadvantages as the inability to recover electricity to the mains in the mode of dynamic braking of an induction motor and significant distortions of the mains current. These disadvantages can be eliminated by using an active rectifier instead of a diode rectifier, which provides a sinusoidal shape of the mains current in phase with the mains voltage and the possibility of bidirectional energy exchange with the load. The efficiency of the active rectifier-voltage source is determined by the selected control algorithm of the circuit switches and the correct task of the inductance of the input choke. A mathematical model of a three-phase active rectifier-voltage source, working with a fixed modulation frequency with a vector algorithm for building a control system and analysis of the influence of the input inductance on the quality of its work was created. From the simulation results it became obvious that the proposed structure of the control system provides stable operation of the converter and acceptable standards for electromagnetic compatibility with the mains at a fixed modulation frequency; the proposed algorithm for calculating the value of the input inductances allows you to correctly select their allowable value, and obtained in the simulation of the dependence allows you to most accurately determine the value of the input inductances on the allowable level of distortion of mains current and supply voltage.

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18

Parise, Mauro, Fabrizio Loreto, Daniele Romano, Giulio Antonini, and Jonas Ekman. "Accurate Computation of Mutual Inductance of Non Coaxial Pancake Coils." Energies 14, no. 16 (August 11, 2021): 4907. http://dx.doi.org/10.3390/en14164907.

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The computation of self and mutual inductances of coils is a classic problem of electrical engineering. The accurate modeling of coupled coils has received renewed interest with the spread of wireless power transfer systems. This problem has been quite well addressed for coplanar or perfectly coaxial coils but it is known that the misalignment conditions easily lead to a sharp decrease in the efficiency. Hence, it is crucial to take misalignment into account in order to properly design the overall wireless power transfer system. This work presents a study to compute analytically the mutual inductance of non-coaxial pancake coils with parallel axes. The accuracy of the proposed methodology is tested by comparison with the numerical results obtained using the tool Fast-Henry. Then, a wireless power transfer system, comprising a full bridge inverter is considered, showing the impact of the misalignment on the coupling between two pancake coils and, thus, between the source and the load.

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19

Sereda, Gennady E., and Vladimir M. Strepetov. "Determination of Inductance of Vehicle Electromagnet in Magnetic Levitation Transprort System." Transportation systems and technology 3, no. 4 (December 15, 2017): 75–88. http://dx.doi.org/10.17816/transsyst20173475-88.

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Objective. Of the work consists in receiving new analytic expressions for determination of inductance of vehicular electromagnets of transport levitation systems. Methods. The key feature of calculation model of onboard coils in accordance with their inductance on the example of squared electromagnets lies an assumption about a smallness of the size «heights» in comparison with its other geometrical sizes. There is also an assumption that thickness of a skin layer of the conductor significantly surpasses cross sectional size of the wire making the coil. The single-turn coil is considered, inductance of an actual electromagnet is accepted proportional to a square of the number of turns. When calculating inductance the dimensionless quantities are used. As an absolute, a quarter of perimeter of the coil on the centerline is chosen. The condition of obtaining the approximate formula for calculation of inductance of the flat rectangular coil is the small thickness of a winding in comparison with the geometrical sizes of the coil. Results. Accurate analytical expression for inductance of a «thin» source of squareshaped magnetic field as the algebraic sum of elementary functions has been received. Results of a numerical analysis show dependence of the relative inductance of the square-shaped flat coil on thickness relation to its minimum size. Influence of «elongation» of the coil (relation of length to width) is investigated. It is noted that inductance decreases with decrease of «elongation», and also with increase in the relation of thickness to the minimum size. Practical importance. The approximate formula for calculation of value of inductance has been obtained. Its uncertainty does not exceed 14 % in the areas of changes of all geometrical parameters of an electromagnet is output. Borders of practical application of the received analytic expressions at the accepted assumptions have been set. The received expressions are fairly simple structurally and are easily programmed

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20

Aminullah, Moh Wahyu, Haryadi Haryadi, and Dina Fitria. "PERANCANGAN KOMPOR LISTRIK BERBASIS PANEL SURYA TERHADAP PENGARUH PANJANG COIL." Jurnal Teknik Elektro Uniba (JTE UNIBA) 6, no. 2 (June 4, 2022): 200–205. http://dx.doi.org/10.36277/jteuniba.v6i2.108.

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Solar energy can be obtained easily and free of charge, but the conversion results are not entirely easy and free. In this study we tried to develop alternative energy from sunlight or solar panels as an energy source that can produce electrical energy (DC) as an energy source for electric stoves. The induction electric stove was self-assembled in this study with a cross-sectional area of 10 cm2. In testing the induction electric stove was used to heat water for 15 minutes. The test was carried out from 09:00 – 15:00 for 3 days using a coil with various coil lengths (1m, 2m, and 3m). The results showed that the coil length of 1 m resulted in the lowest inductance value of 125.6 x 10-9 H, and the lowest power of 119,025 Wh. While the coil with a length of 3 m produces the best inductance value of 376.8 x 10-9 H, and the best power of 125.235 Wh. The results showed that the greater the coil length value, the greater the inductance and power generated.

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21

Tian, Haitao, Yuhong Li, Qiang Zhang, Ningru Xiao, Jingjing Wang, Hongwei Liu, and Yuqiang Li. "Improved Current-Sharing Imbalance Control Model Based on Magnetic Ferrite Inductance and a Gate Drive Circuit." Machines 11, no. 2 (February 1, 2023): 197. http://dx.doi.org/10.3390/machines11020197.

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The dynamic and static imbalance of parallel current sharing has held the concern of researchers in view of the variation in multiple parasitic parameters on high-frequency parallel switching mode power supply (SMPS). The joint simulations and suppression experiments on the parallel current-sharing imbalance of various parasitic parameters are investigated on the improved dual-pulse detection circuit platform to determine the method of detecting the parallel current-sharing imbalance ratio using the sum of the differential magnetic flux. An improved model of current-sharing imbalance control is presented consisting of magnetic ferrite inductance and a gate drive circuit. The main concerns are the suppression performance of drain, gate, and source parasitic inductance, gate–source capacitance, driving time and voltage, gate resistance, and delayed forward/reverse driving signals on the ratio of parallel current-sharing imbalance, respectively. The improved model effectively reduces the parallel current-sharing imbalance ratio by more than 5% and 2–4.2%, compared with using a gate drive circuit alone and using magnetic ferrite inductance solely.

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22

Yudin, Aleksey V., Evgeniy A. Eliseichev, and Viktor V. Yudin. "Mathematical Support of Automatic Power Equalization Systems for Modular Power Source." Vestnik MEI 5, no. 5 (2020): 126–31. http://dx.doi.org/10.24160/1993-6982-2020-5-126-131.

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An algorithm for controlling the modules of a power supply source of vacuum electric furnaces intended for growing artificial monocrystals of leucosapphire according to the Kyropoulos method is considered. Since the modules from which a source with the required capacity is assembled by connecting them in parallel are not exactly identical with one another, and so are the current conducting buses used to interconnect them, a situation may occur in which some of the modules are underloaded, while others are overloaded. Therefore, in addition to stabilizing the total power produced by the source, the automatic control system must minimize the power difference among the modules. An algorithm ensuring balanced operation of the modules is developed, which is based on modeling the processes in an electrical system consisting of power supply modules and current supply buses that take into account their parameters — resistance, inductance, and mutual inductance. The algorithm has been implemented in the MatLab environment. The algorithm testing results have shown that the power difference among the power supply modules is decreased by more than a factor of two.

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23

Semyonov, Edward, and Oleg Malakhovskij. "Isothermal measurement of current-voltage characteristics of Gunn diodes with reflection of their discontinuities and hysteresis." ITM Web of Conferences 30 (2019): 11008. http://dx.doi.org/10.1051/itmconf/20193011008.

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Requirements to the measuring setup are formulated, which make it possible obtaining isothermal current-voltage (I-V) characteristics of the Gunn diode with reflection of their discontinuities, region of negative differential resistance, and hysteresis. The influence of the inductance of the test pulses, source on the occurrence of self-excitation in the connecting transmission line is investigated. The maximum permissible values of the inductance of the test signal source are indicated. Operation of the measuring circuit without self-excitation was experimentally achieved in most of the region with negative differential resistance. The isothermal I-V characteristics of the Gunn diode were measured with a controlled systematic error due to the comparing the measurement result with the developed model of the I-V characteristic.

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24

Parise, Mauro, Giulio Antonini, and Daniele Romano. "On the Flux Linkage between Pancake Coils in Resonance-Type Wireless Power Transfer Systems." International Journal of Antennas and Propagation 2020 (February 5, 2020): 1–6. http://dx.doi.org/10.1155/2020/8630978.

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This work presents a series representation for the mutual inductance of two coaxial pancake coils which remains accurate in non-quasi-static regime under the hypothesis that the current in the source coil is uniformly distributed. Making use of Gegenbauer’s addition theorem and a term-by-term analytical integration, the mutual inductance between two generic turns belonging to distinct coils is expressed as a sum of spherical Hankel functions with algebraic coefficients. The accuracy and efficiency of the resulting expression is proved through pertinent numerical examples.

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Al-Shamma’a, Abdullrahman A., Abdullah M. Noman, Khaled E. Addoweesh, Ayman A. Alabduljabbar, and A. I. Alolah. "Analytical Approach to Circulating Current Mitigation in Hexagram Converter-Based Grid-Connected Photovoltaic Systems Using Multiwinding Coupled Inductors." International Journal of Photoenergy 2018 (2018): 1–22. http://dx.doi.org/10.1155/2018/9164528.

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The hexagram multilevel converter (HMC) is composed of six conventional two-level voltage source converters (VSCs), where each VSC module is connected to a string of PV arrays. The VSC modules are connected through inductors, which are essential to minimize the circulating current. Selecting inductors with suitable inductance is no simple process, where the inductance value should be large to minimize the circulating current as well as small to reduce an extra voltage drop. This paper analyzes the utilization of a multiwinding (e.g., two, three, and six windings) coupled inductor to interconnect the six VSC modules instead of six single inductors, to minimize the circulating current inside the HMC. Then, a theoretical relationship between the total impedance to the circulating current, the number of coupled inductor windings, and the magnetizing inductance is derived. Owing to the coupled inductors, the impedance on the circulating current path is a multiple of six times the magnetizing inductance, whereas the terminal voltage is slightly affected by the leakage inductance. The HMC is controlled to work under variable solar radiation, providing active power to the grid. Additional functions such as DSTATCOM, during daytime, are also demonstrated. The controller performance is found to be satisfactory for both active and reactive power supplies.

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26

Adib, Aswad, and Behrooz Mirafzal. "Virtual Inductance for Stable Operation of Grid-Interactive Voltage Source Inverters." IEEE Transactions on Industrial Electronics 66, no. 8 (August 2019): 6002–11. http://dx.doi.org/10.1109/tie.2018.2874594.

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Yang, Hai-Yan, Feng-Ping Li, Jian-Hua Yue, Fu-Sheng Guo, Xu-Hua Liu, and Hua Zhang. "Cone-shaped source characteristics and inductance effect of transient electromagnetic method." Applied Geophysics 14, no. 1 (March 2017): 165–74. http://dx.doi.org/10.1007/s11770-017-0604-2.

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28

Aldana, Diego, Yamisleydi Salgueiro, Colin Bellinger, Marco Rivera, and César A. Astudillo. "Data for resistance and inductance estimation within a voltage source inverter." Data in Brief 25 (August 2019): 104104. http://dx.doi.org/10.1016/j.dib.2019.104104.

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29

Wang, Lin, Zhe Cheng, Zhi-Guo Yu, De-Feng Lin, Zhe Liu, Li-Fang Jia, and Yun Zhang. "Design and Switching Characteristics of Flip-Chip GaN Half-Bridge Modules Integrated with Drivers." Applied Sciences 11, no. 15 (July 30, 2021): 7057. http://dx.doi.org/10.3390/app11157057.

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Half-bridge modules with integrated GaN high electron mobility transistors (HEMTs) and driver dies were designed and fabricated in this research. Our design uses flip-chip technology for fabrication, instead of more generally applied wire bonding, to reduce parasitic inductance in both the driver-gate and drain-source loops. Modules were prepared using both methods and the double-pulse test was applied to evaluate and compare their switching characteristics. The gate voltage (Vgs) waveform of the flip-chip module showed no overshoot during the turn-on period, and a small oscillation during the turn-off period. The probabilities of gate damage and false turn-on were greatly reduced. The inductance in the drain-source loop of the module was measured to be 3.4 nH. The rise and fall times of the drain voltage (Vds) were 12.9 and 5.8 ns, respectively, with an overshoot of only 4.8 V during the turn-off period under Vdc = 100 V. These results indicate that the use of flip-chip technology along with the integration of GaN HEMTs with driver dies can effectively reduce the parasitic inductance and improve the switching performance of GaN half-bridge modules compared to wire bonding.

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30

Song, Pengyun, Yanghui Liu, and Chao Liu. "Research on Parameter Design and Control Method for Current Source Inverter–Fed IM Drive Systems." Machines 10, no. 10 (October 10, 2022): 922. http://dx.doi.org/10.3390/machines10100922.

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In the current source inverter (CSI)−fed inductor motor (IM) drive system, DC−bus inductance and AC−filter capacitance have a direct impact on the dynamic response speed, power quality and power density. In addition, due to the addition of filter capacitors, the mathematical model formed by the IM and capacitor is a third−order system, which increases the difficulty of parameter tuning for the control loop. To solve the above problems in the CSI, a DC−bus inductance design method based on current response speed and the ripple of the DC−link current and an AC−filter capacitance design method based on current utilization and filtering characteristics are presented. Then, the analytical expressions between the open−loop cut−off frequency, phase margin and the PI controller parameters of the current loop and speed loop are derived. Finally, an experimental platform is established to validate the proposed method.

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Zhou, Chang, Chen Ji, and Gen Ping Wu. "A Technique for Tunable Filters with Low Insertion Loss and Narrow Bandwidth." E3S Web of Conferences 38 (2018): 03039. http://dx.doi.org/10.1051/e3sconf/20183803039.

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A technique for tunable filters with low insertion loss and narrow bandwidth is proposed in the form of comb-line structure. Both resonant capacitor with pin-diodes and resonant inductance in the tunable filter were analyzed and the main source of insertion loss was obtained. A series of filters with same pin-diodes, center frequency, absolute bandwidth and low return loss was simulated. The results showed that, by changing the values of the resonant capacitor and inductance, insertion loss of the filter can be greatly restricted. This technique will allow the design of tunable LC filters with low insertion loss and narrow bandwidth.

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32

Xiong, Hu, Bin Xiang, and Yuan Mao. "An Auxiliary Passive Circuit and Control Design for Wireless Power Transfer Systems in DC Microgrids with Zero Voltage Switching and Accurate Output Regulations." Energies 16, no. 2 (January 6, 2023): 694. http://dx.doi.org/10.3390/en16020694.

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This paper presents an auxiliary passive circuit and control design for wireless power transfer (WPT) systems in DC microgrids to achieve optimal power transfer efficiency while maintain accurate output voltage regulation. An auxiliary inductance is added at the transmitter resonator to form a current sink to ensure zero voltage switching (ZVS) of the primary-side full-bridge inverter with even extremely light load conditions. Moreover, an adaptive proportional–integral (PI) controller is adopted to track the output voltage references by regulating the phase shift angle of the phase shift control for the full-bridge inverter. The coefficients of the adaptive PI controller are determined by the inductance of the auxiliary inductance. Both simulation and experimental results validated the effectiveness of the proposed circuit and control design in achieving optimal efficiency and output voltage regulation for WPT systems in DC microgrids with source and load variations.

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33

Salih, Firas S., and Oday A. Ahmed. "Improved Y-Source Single-Stage Transformerless Micro-Inverter for PV Residential Applications." Engineering and Technology Journal 38, no. 9A (September 25, 2020): 1327–41. http://dx.doi.org/10.30684/etj.v38i9a.1143.

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Y-Source Impedance Network (YSN) is one of the most suitable for providing high voltage gain. It generatesa high voltage gain by using a small shoot-through duty cycle, which makes it suitable in applications require a wide range of input voltages such as the Photovoltaic (PV) power plants. However, traditional (YSNs) are unable to boost low voltages in certain applications to the DC-link voltage (about 400V) since it requires a high number of the turns ratio. Higher turns ratio implies higher leakage inductance resulting in higher DC-link voltage spikes. Also, traditional YSNs have high voltage stresses across the components. In this paper, a developed new transformerless Micro-Inverter (MI) is presented that can overcome all the aforementioned drawbacks. The proposed MI has been developed and designed to eliminate both the leakage inductance due to three-winding coupled transformer and leakage current due to using transformerless MI configuration. In addition, the proposed MI reduced the components' stress significantly and increases the converter voltage gain capability in one single-stage. The proposed high boost ratio transformerless MI is analyzed through the PLECS software simulator and implemented in a small scale MI prototype to ensure the results agree with the analysis and simulation results.

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Islahudin, Islahudin, and M. Firman Ramdhan. "VIBRATION SENSOR BASED ON FLAT KOIL FOR EARTHQUAKE EARLY DETECTION IN LOMBOK NUSA TENGGARA BARAT REGION." Prisma Sains : Jurnal Pengkajian Ilmu dan Pembelajaran Matematika dan IPA IKIP Mataram 1, no. 2 (December 21, 2013): 161. http://dx.doi.org/10.33394/j-ps.v1i2.1015.

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In this research has been developed the application of flat coil as vibration sensor for early detection of earthquake. The flat coil is a very thin wire winding and acts as an inductor. This flat coil along with the capacitor constructs an oscillator which generates frequencies depending on the value of inductance and capacitance. This oscillator is called the LC oscillator. The flat coil inductance depends on the distance of the metal object in front of the flat coil. If the inductance changes, the frequency will change as well. Frequency can be converted into voltage form to represent distance. This effect is then applied to low frequencies using a pendulum on the sensor housing. The sensor system created can measure low-frequency vibrations in the range 0.26 - 1.0 Hz. Based on the research, the vibration sensor that has been made can measure one of the low frequency vibrations of 0.468 Hz at the frequency of 0.46 Hz vibration source

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35

Fan, Boran, Victoria Baker, Rolando Burgos, Mahmoud El Chamie, Warren Chen, Vladimir Blasko, and Dushan Boroyevich. "Common-Source Inductance Induced Voltage Overshoot and Oscillation in Active Bidirectional Devices." IEEE Transactions on Power Electronics 36, no. 12 (December 2021): 13383–88. http://dx.doi.org/10.1109/tpel.2021.3080615.

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36

Debolt, N., A. Hershcovitch, B. M. Johnson, N. Rostoker, A. VanDrie, and F. Wessel. "Recent results from the low inductance Z-discharge metal vapor ion source." Review of Scientific Instruments 73, no. 2 (February 2002): 741–43. http://dx.doi.org/10.1063/1.1430515.

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37

Zhang, Shou, and Yan-Hui Liu. "Quantum fluctuation of a mesoscopic inductance–resistance coupled circuit with power source." Physics Letters A 322, no. 5-6 (March 2004): 356–62. http://dx.doi.org/10.1016/j.physleta.2004.01.052.

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38

Srndovic, Milan, Rastko Fišer, and Gabriele Grandi. "Analysis of Equivalent Inductance of Three-phase Induction Motors in the Switching Frequency Range." Electronics 8, no. 2 (January 22, 2019): 120. http://dx.doi.org/10.3390/electronics8020120.

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The equivalent inductance of three-phase induction motors is experimentally investigated in this paper, with particular reference to the frequency range from 1 kHz to 20 kHz, typical for the switching frequency in inverter-fed electrical drives. The equivalent inductance is a basic parameter when determining the inverter-motor current distortion introduced by switching modulation, such as rms of current ripple, peak-to-peak current ripple amplitude, total harmonic distortion (THD), and synthesis of the optimal PWM strategy to minimize the THD itself. In case of squirrel-cage rotors, the experimental evidence shows that the equivalent inductance cannot be considered constant in the frequency range up to 20 kHz, and it considerably differs from the value measured at 50 Hz. This frequency-dependent behaviour can be justified mainly by the skin effect in rotor bars affecting the rotor leakage inductance in the considered frequency range. Experimental results are presented for a set of squirrel-cage induction motors with different rated power and one wound-rotor motor in order to emphasize the aforesaid phenomenon. The measurements were carried out by a three-phase sinusoidal generator with the maximum operating frequency of 5 kHz and a voltage source inverter operating in the six-step mode with the frequency up to 20 kHz.

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39

Raviola, Erica, and Franco Fiori. "Investigations on the Use of the Power Transistor Source Inductance to Mitigate the Electromagnetic Emission of Switching Power Circuits." Signals 2, no. 3 (September 6, 2021): 586–603. http://dx.doi.org/10.3390/signals2030036.

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With power designers always demanding for faster power switches, electromagnetic interference has become an issue of primary concern. As known, the commutation of power transistors is the main cause of the electromagnetic noise, which can be worsened by the presence of unwanted oscillations superimposed onto the switching waveforms. This work proposes a solution to mitigate the oscillations caused by the turn-on of a power transistor by exploiting its source inductance plus an external one. In this context, an optimization method is proposed to find the optimal value of the source inductance as a trade-off between oscillation damping and power dissipation. The experimental results performed on a prototyped power converter assess the proposed technique as the spectrum of the conducted emission is attenuated by 20 dB at the oscillation frequency. With respect to traditional solution based on snubbers, the proposed solution results in a similar oscillation damping, but with a 0.5% higher power efficiency.

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40

Li, Yang, Yan Zhang, Yuan Gao, Sixing Du, and Jinjun Liu. "Switching Characteristic Analysis and Application Assessment of SiC MOSFET With Common Source Inductance and Kelvin Source Connection." IEEE Transactions on Power Electronics 37, no. 7 (July 2022): 7941–51. http://dx.doi.org/10.1109/tpel.2021.3139466.

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41

Qin, Haihong, Xiang Liu, Xiang Han, Sixuan Xie, Baigen Xu, and Ziyue Zhu. "Optimal design of kelvin source SiC MOSFET based PFC considering inductor parasitic capacitance and source mutual inductance." Energy Reports 8 (November 2022): 959–69. http://dx.doi.org/10.1016/j.egyr.2022.10.163.

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42

Qin, Haihong, Zhenhua Ba, Sixuan Xie, Zimo Zhang, Wenming Chen, and Qian Xun. "Parameters Design and Optimization of SiC MOSFET Driving Circuit with Consideration of Comprehensive Loss and Voltage Stress." Micromachines 14, no. 3 (February 21, 2023): 505. http://dx.doi.org/10.3390/mi14030505.

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In conventional parameters design, the driving circuit is usually simplified as an RLC second-order circuit, and the switching characteristics are optimized by selecting parameters, but the influence of switching characteristics on the driving circuit is not considered. In this paper, the insight mechanism for the gate-source voltage changed by overshoot and ringing caused by the high switching speed of SiC MOSFET is highlighted, and we propose an optimized design method to obtain optimal parameters of the SiC MOSFET driving circuit with consideration of parasitic parameters. Based on the double-pulse circuit, we evaluated the influence of main parameters on the gate-source voltage, including driving voltage, driving resistance, gate parasitic inductance, and stray inductance of the power circuit. A SiC-based boost PFC is constructed and tested. The test results show that the switching loss can be reduced by 7.282 W by using the proposed parameter optimization method, and the over-voltage stress of SiC MOSFET is avoided.

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43

Bödeker, Christian, Edgar Ayerbe, and Nando Kaminski. "Impact of a Kelvin Source Connection on Discrete High Power SiC-MOSFETs." Materials Science Forum 924 (June 2018): 723–26. http://dx.doi.org/10.4028/www.scientific.net/msf.924.723.

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Standard packages like the TO-247-3L impose a strong restriction on the performance of SiC-transistors. The limitation arises predominantly from the common source inductance LS that is shared between the gate loop and the load circuit. To avoid this parasitic influence, advanced packages like the TO-247-4L or TO-263-7L offering a Kelvin source connection have been introduced. In this work, the influence of a Kelvin source connection on the switching behavior of a high power SiC-MOSFET is investigated.

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44

Krylov, D. S., and O. I. Kholod. "Determination of the input filter parameters of the active rectifier with a fixed modulation frequency." Electrical Engineering & Electromechanics, no. 4 (July 8, 2022): 21–26. http://dx.doi.org/10.20998/2074-272x.2022.4.03.

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Goal. Development of a methodology for calculating the parameters of the active rectifier-voltage source input filter operating with a fixed modulation frequency to ensure electromagnetic compatibility with the supply network acceptable by standards at minimum values of the input inductance and checking its main characteristics on a mathematical model. Methodology. The authors have developed a methodology for calculating the parameters of the input filter of an active rectifier-voltage source. The calculation results are verified on the constructed mathematical model of a frequency converter, the scheme of which is an active rectifier and an autonomous voltage inverter. A series of experiments was carried out on a mathematical model to study the dependence of the total harmonic distortion of current and mains voltage on the value of the input inductance for various parameters of the input filter. Results. The structure and calculation procedure the input filter of an active rectifier operating with a fixed modulation frequency are proposed. The simulation results showed that the inclusion of a filter at the input of the active rectifier significantly improves its electromagnetic compatibility with the supply network in the entire range of variation of the input inductance of the circuit and makes it possible to achieve the values of the total harmonic distortion permissible by the norms. Originality. A structure and a calculation procedure the input filter of an active rectifier-voltage source operating with a fixed modulation frequency are proposed. Practical significance. The dependencies obtained in the article allow us to evaluate the relationship between the parameters of the filter elements and its characteristics among themselves and come to a compromise between them when designing a scheme for specific technical conditions.

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45

Zhang, Liqi, Suxuan Guo, Pengkun Liu, and Alex Q. Huang. "Comparative Evaluation and Analysis of Gate Driver Impacts on a SiC MOSFET-Gate Driver Integrated Power Module." International Symposium on Microelectronics 2017, no. 1 (October 1, 2017): 000247–51. http://dx.doi.org/10.4071/isom-2017-wa35_023.

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Abstract SiC MOSFET-gate driver integrated power module is proposed to provide ultra-low stray inductance compared to traditional TO-247 or TO-220 packages. Kelvin connection eliminates the common source stray inductance and zero external gate resistor enables faster switching. This module can be operated at MHz switching frequency for high power applications with lower switching losses than discrete packages. Two different gate drivers and two different SiC MOSFETs are grouped and integrated into three integrated power modules. Comparative evaluation and analysis of gate driver impacts on switching speed of SiC MOSFET is shown in detail. The paper provides an insight of the gate driver impacts on the device switching performance in an integrated power module.

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46

Jagadeesh, Ingilala, and V. Indragandhi. "A novel PV based high voltage gain soft switching DC-DC boost converter." International Journal of Engineering & Technology 7, no. 3 (June 23, 2018): 1034. http://dx.doi.org/10.14419/ijet.v7i3.13777.

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The design of high voltage gain DC-DC boost converter is carried out with the addition of the Voltage Multiplier (VM) method. Here the coupled inductor and VM methodologies are proposed to reduce the switching and conduction losses of the Metal Oxide Semiconductor Field Effect Transistor (MOSFET). The Zero Current Switching (ZCS) technique with coupled inductor leakage inductance is used to operate the MOSFET. The leakage inductance is used to decrease the reverse recovery current across the diode. The design procedure of the boost converter and corresponding output waveforms are presented in this paper. Photovoltaic (PV) source converter with coupling inductors soft switching technique has been analyzed and tested in this paper.

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47

Borer, Matthew W., Robert E. Ensman, Yolanda Madrid, and Gary M. Hieftje. "A New Method for Feedback Stabilization of a Microwave Power Supply." Applied Spectroscopy 46, no. 7 (July 1992): 1162–67. http://dx.doi.org/10.1366/0003702924124097.

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A new method has been developed for the feedback stabilization of a microwave power supply, with the intent to reduce emission noise in microwave-induced plasma atomic emission spectrometry (MIP-AES). The control method would be applicable to any microwave generator whose output power is affected by the input ac line voltage. In the feedback process, the effective line voltage is adjusted by means of a controllable inductance placed in series with a variable transformer at the input of the generator. In turn, this inductance is controlled by selecting the dc current in the primary winding of an auxiliary transformer, so the inductance in its secondary winding is altered. The long-term stability of the feedback-controlled system is verified and the range of stabilization is examined. Noise in the power output of the microwave generator is shown to be reduced at frequencies below 1.5 Hz. Although stable microwave power generation does not necessarily result in stable emission from a microwave-induced plasma source, an emission-based feedback signal is shown to improve the stability.

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48

Xi, H., C. Liang, F. Q. Zhang, M. J. Li, and T. P. Peng. "A pulse current generator for dense plasma focus." Journal of Instrumentation 16, no. 12 (December 1, 2021): P12021. http://dx.doi.org/10.1088/1748-0221/16/12/p12021.

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Abstract A pulse current generator applied in a type of high-yield intense pulsed neutron source, the Dense Plasma Focus (DPF), is designed and developed in this paper. There are three key components in this generator. Each group of capacitors and switches is integrative to meet the DPF's requirements of low circuit inductance. A coaxial multi-channel switch is developed to solve the problems of the switch inductance, the jitter and the electrode erosion. A kind of sectorial plate transmission line is adopted to transfer the high pulse current from the capacitors to the DPF. The following technical parameters of the generator were achieved on dummy load: output current amplitude of ∼560 kA when primary capacitors are charged with 22 kV.

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49

Shou, Zhang, Zhu Ai-Dong, Jin Zhe, Li Zhe-Kui, Pan Shu-Mei, Zhao Yong-Fang, Jing Xiao-Gong, Qian Zheng-Nan, and Su Wen-Hui. "Double-wave description of mesoscopic resistance-inductance-capacitance coupled circuit with power source." Chinese Physics 12, no. 12 (December 2003): 1360–65. http://dx.doi.org/10.1088/1009-1963/12/12/004.

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50

Sriram, S., and T. J. Smith. "Reduction of common-source inductance in FET/HEMT structures utilizing wave-propagation effects." IEEE Transactions on Microwave Theory and Techniques 48, no. 3 (March 2000): 406–11. http://dx.doi.org/10.1109/22.826839.

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