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Journal articles on the topic 'Synchronous PWM'

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Author: Grafiati

Published: 4 April 2023

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1

Li, Wen Yuan, and Jun Zhang. "PWM/PFM Dual-Mode Synchronous Boost DC-DC Regulator." Applied Mechanics and Materials 380-384 (August 2013): 3209–12. http://dx.doi.org/10.4028/www.scientific.net/amm.380-384.3209.

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a novel peak current PWM/PFM dual-mode boost dc-dc regulator applying for neural signal regeneration is proposed in this paper. The converter can adaptively switch between pulse-width modulation (PWM) and pulse-frequency modulation (PFM) both with relatively high conversion efficiency. Soft-start circuit is designed to eliminate the surge current at the start up stage of the regulator, other protection modules are also contained. The paper analyzes the model and stability of the system. The operation frequency of the regulator is 1MHz. The simulation results show the efficiency of the system is relatively high in PWM mode, up to 95%, in PFM mode it also has good efficiency.

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2

Mazgaj, Witold, Zbigniew Szular, and Tomasz Węgiel. "Control methods for PWM rectifier cooperating with variable speed PM generator." Archives of Control Sciences 23, no. 4 (December 1, 2013): 495–504. http://dx.doi.org/10.2478/acsc-2013-0030.

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Abstract The paper deals with cooperation between pulse width modulation (PWM) rectifier and variable speed synchronous generator which is applied especially in small water or wind plants. In such applications, the synchronous generator, which is usually permanent magnet (PM) generator, rotates at a variable speed which depends on water or wind energy. Therefore, this energy should be converted to the parameters of the three-phase power grid with the use of a power electronic unit. The main aim of the control strategy is to transfer a maximum possible amount of energy produced by the water turbine or the wind turbine connected to a synchronous generator. The second purpose of the control method is to decrease the amount of higher harmonics of generator currents. The paper describes two basic methods which are used in control systems of the PWM rectifiers. The first one is the sinusoidal PWM method, and the second method relates to the hysteresis switching of the PWM rectifier transistors. A significant part of the paper is devoted to control principles of the PWM rectifier which cooperates with a variable speed PM synchronous generator. Special attention is paid to higher harmonics of PM generator currents with respect to individual methods.

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3

Panda, Anup Kumar, Swapnajit Pattnaik, and K. K. Mohapatra. "A Novel Soft-Switching Synchronous Buck Converter for Portable Applications." International Journal of Power Management Electronics 2008 (February 13, 2008): 1–9. http://dx.doi.org/10.1155/2008/862510.

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This paper proposes a zero-voltage-transition (ZVT) pulse-width-modulated (PWM) synchronous buck converter, which is designed to operate at low voltage and high efficiency typically required for portable systems. A new passive auxiliary circuit that allows the main switch to operate with zero-voltage switching has been incorporated in the conventional PWM synchronous buck converter. The operation principles and a detailed steady-state analysis of the ZVT-PWM synchronous converter implemented with the auxiliary circuit are presented. Besides, the main switch and all of the semiconductor devices operate under soft-switching conditions. Thus, the auxiliary circuit provides a larger overall efficiency. The feasibility of the auxiliary circuit is confirmed by simulation and experimental results.

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4

Benevieri, Alessandro, Gianmarco Maragliano, Mario Marchesoni, Massimiliano Passalacqua, and Luis Vaccaro. "Induction Motor Direct Torque Control with Synchronous PWM." Energies 14, no. 16 (August 16, 2021): 5025. http://dx.doi.org/10.3390/en14165025.

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A novel induction motor direct torque control (DTC) algorithm with synchronous modulation is presented. Compared to the traditional DTC method, whose main drawback is the presence of low-frequency torque harmonics (sub-harmonics), in the proposed method, the PWM switching frequency is imposed to be an integer multiple of the main supply frequency. This is achieved by continuously adjusting the PWM switching period to significantly reduce low-frequency harmonics. The devised algorithm has been tested on an inverter-fed induction motor drive system, and the obtained results show an important reduction of the sub-harmonic spectral content of the developed torque with respect to a conventional direct torque control while maintaining at the same time a high dynamic response.

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5

Kojori, H. A., S. B. Dewan, and J. D. Lavers. "A large-scale PWM solid-state synchronous condenser." IEEE Transactions on Industry Applications 28, no. 1 (1992): 41–49. http://dx.doi.org/10.1109/28.120211.

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6

Adib, E., and H. Farzanehfard. "Zero-Voltage-Transition PWM Converters With Synchronous Rectifier." IEEE Transactions on Power Electronics 25, no. 1 (January 2010): 105–10. http://dx.doi.org/10.1109/tpel.2009.2024153.

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7

Muttaqin, Adharul, Stefanus Dion Finnadi, Zainul Abidin, and Kakeru Araki. "FPGA based synchronous multi-channel PWM generator for humanoid robot." International Journal of Electrical and Computer Engineering (IJECE) 11, no. 1 (February 1, 2021): 249. http://dx.doi.org/10.11591/ijece.v11i1.pp249-256.

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In this paper, synchronous multi-channel pulse width modulation (PWM) generator for driving servo motors of humanoid robot was proposed. In an application, the humanoid robot requires smooth and beautiful movement, therefore the PWM signal for each servo motor must be synchronized. Since microcontroller (slave) has no enough channels to generate synchronous PWMs for 32 servo motors, field programmable gate array (FPGA) was used as slave for the humanoid robot. The FPGA was controlled by microcontroller (master) using serial communication. Simulation results show the system can perform serial communication, synchronize, and convert data well. The system can also generate PWM simultaneously with accurate duty cycle and fix period of 20ms.

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8

Oleschuk, V. I. "GRID-CONNECTED PV SYSTEM EMPLOYING THREE INVERTERS REGULATED BY SYNCHRONOUS SCHEME OF PWM." Tekhnichna Elektrodynamika 2022, no. 5 (August 18, 2022): 23–28. http://dx.doi.org/10.15407/techned2022.05.023.

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The paper presents comparative analysis of three versions of the modified scheme of space-vector-based synchronous pulsewidth modulation (PWM), applied for control of three two-level inverters of transformer-based photovoltaic (PV) system, and focused on providing of the symmetry of winding voltage of power transformer during the whole adjustment range. Power supply of inverters is providing by the corresponding three solar strings consisting of a set of PV panels, and the outputs of three inverters are connected specifically with inverter-side windings of multi-winding grid-tired transformer. Results of MATLAB-simulation prove the fact of advanced spectral composition of the winding voltage of triple-inverter-based PV installation regulated by algorithms of synchronous space-vector PWM, assuring potential reduction of losses in these systems. References 10, table 1, figures 9.

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9

Roy, Swarnil, Sagar Mukherjee, and Chandan Kumar Sarkar. "Highly efficient PWM synchronous buck converter with optimized LDMOS." Superlattices and Microstructures 83 (July 2015): 595–603. http://dx.doi.org/10.1016/j.spmi.2015.04.010.

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10

Kwon, B. H., J. H. Youm, J. W. Lim, K. W. Seok, and G. Y. Jeong. "Three-phase PWM synchronous rectifiers without line-voltage sensors." IEE Proceedings - Electric Power Applications 146, no. 6 (1999): 632. http://dx.doi.org/10.1049/ip-epa:19990465.

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11

Seong, H. H., and G. H. Cho. "New constant frequency PWM dual convertor with synchronous rectifier." Electronics Letters 29, no. 24 (1993): 2074. http://dx.doi.org/10.1049/el:19931385.

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12

Han, B., S. Moon, J. Park, and G. Karady. "Static synchronous compensator using thyristor PWM current source inverter." IEEE Transactions on Power Delivery 15, no. 4 (2000): 1285–90. http://dx.doi.org/10.1109/61.891516.

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13

Bak, Yeongsu, June-Seok Lee, and Kyo-Beum Lee. "Driving Method of Interior Permanent Magnet Synchronous Motor for Railroad Cars Using a Synchronous PWM Method." Journal of the Korean Society for Railway 22, no. 2 (February 28, 2019): 129–39. http://dx.doi.org/10.7782/jksr.2019.22.2.129.

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14

Zhang, Yu, Feng Ying Ma, and Wen Bin Shi. "An Improved Synchronous Drive Control Platform of Multi-Servo Motor Based on DSP Used in Teaching." Advanced Materials Research 1079-1080 (December 2014): 938–41. http://dx.doi.org/10.4028/www.scientific.net/amr.1079-1080.938.

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In order to demonstrate the synchronous driving capability of multi-servo motor, an improved synchronous drive control platform based on DSP used in teaching was established. The dedicated motor control chip ASIC-TMS320F2812A was adopted with a unique independent PWM control signal output function. The hardware components were introduced, resulting in principle and duty cycle of the PWM waveform calculation. The tests showed that the DSP servo control system has good performance of high reliability, fast dynamic response and low noise.

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15

Ji, H., and Zhi Yong Li. "Simulation Design of a Novel Algorithm on Space Vector PWM." Advanced Materials Research 764 (September 2013): 103–7. http://dx.doi.org/10.4028/www.scientific.net/amr.764.103.

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A novel algorithm of space vector PWM (SVPWM) based on artificial neural network is proposed in this paper, in order to cope with the complex calculation required in Space Vector PWM. It makes full use of the fast parallel computation and learning capability of ANN to shorten the time of calculation and reduce the harmonic composition and loss. The simulation model of vector control for permanent magnet synchronous motor drive system is built and simulated in MATLAB/Simulink. The simulation results show that the permanent magnet synchronous motor drive system based on artificial neural network SVPWM has more perfect performance than that based on traditional SVPWM controller in dynamic and static property, such as little torque pulses as well as robustness.

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16

Fu, Wei, and Hai Bin Yu. "Using FPGA and CPLD ICs to Achieve High-Frequency PWM." Advanced Materials Research 271-273 (July 2011): 314–19. http://dx.doi.org/10.4028/www.scientific.net/amr.271-273.314.

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PWM (Pulse width modulation) has been widely used in power converter control. This paper is the development of a high-frequency PWM generator architecture for power converter control using FPGA and CPLD ICs. The proposed architecture is based on a special design synchronous binary counter and can be easily interfaced to a microcontroller or DSP system. The resulting PWM frequency depends on the target FPGA or CPLD device speed grade and the duty cycle resolution requirements.

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17

Zargari, N. R., G. Joos, and P. D. Ziogas. "A performance comparison of PWM rectifiers and synchronous link converters." IEEE Transactions on Industrial Electronics 41, no. 5 (1994): 560–62. http://dx.doi.org/10.1109/41.315275.

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18

JIANG, MAOH-CHIN, and CHING-TSAI PAN. "Design and implementation of a PWM solid-state synchronous condenser." International Journal of Electronics 80, no. 1 (January 1996): 107–26. http://dx.doi.org/10.1080/002072196137633.

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19

Lee, J. H., J. C. Kim, and D. S. Hyun. "Hysteresis modeling of synchronous reluctance motor considering PWM input voltage." Physica B: Condensed Matter 275, no. 1-3 (January 2000): 238–47. http://dx.doi.org/10.1016/s0921-4526(99)00778-4.

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20

Xiao, Shuai, and Antonio Griffo. "PWM-based Flux linkage estimation for permanent magnet synchronous machines." Journal of Engineering 2019, no. 17 (June 1, 2019): 4045–49. http://dx.doi.org/10.1049/joe.2018.8105.

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21

Adam, Nur Muhammad, Trias Andromeda, and Yuli Christyono. "PERANCANGAN KONVERTER ARUS SEARAH TIPE SYNCHRONOUS BUCK BERBASIS IC TL494." TRANSIENT 7, no. 4 (May 25, 2019): 891. http://dx.doi.org/10.14710/transient.7.4.891-896.

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Elektronika daya merupakan salah satu bidang penting dalam ketenagalistrikan. Ciri khas pada elektronika daya adalah penggunaan Switched Mode Power Supply (SMPS). Pada konverter arus searah tipe synchronous buck, dioda yang bertindak sebagai saklar diganti oleh MOSFET. Aplikasi penggantian dioda menjadi MOSFET merupakan dasar dari konverter arus searah tipe synchronous buck karena memiliki rugi konduksi yang lebih rendah dari buck converter standar/konvensional. Perancangan rangkaian sinyal pembangkit PWM untuk memicu synchronous buck menggunakan IC TL494, IC TL494 digunakan agar gelombang PWM bersifat komplementer dan terdapat deadtime. Diharapkan konverter arus searah tipe synchronous buck dapat menyuplai beban 5 VDC pada sistem Hybrid Charger Controller. Pada penelitian ini, dilakukan pengujian konverter dengan umpan balik tegangan menggunakan variasi beban resistor. Hasil pengujian konverter dengan umpan balik, diperoleh tegangan keluaran tetap terjaga sebesar 5 V ketika diberi variasi beban resistor 100 Ω sampai 15 Ω serta efisiensi tertinggi sebesar 93,25 % pada beban 47 Ω dan efisiensi terendah pada beban 56 Ω sebesar 82,89 %, dengan rata-rata efisiensi sebesar 88,14 %. Penambahan kontrol umpan balik tegangan pada konverter arus searah tipe synchronous buck menghasilkan nilai tegangan keluaran yang lebih stabil dengan adanya perubahan nilai beban.

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22

Li, Jian Ying, Wei Dong Yang, and Ni Na Ma. "Vector Decoupling Control Strategy for Three-Phase Voltage Source PWM Rectifier." Applied Mechanics and Materials 336-338 (July 2013): 450–53. http://dx.doi.org/10.4028/www.scientific.net/amm.336-338.450.

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In view of the fact that active power and reactive power have coupling relation, a novel vector decoupling control strategy is presented for three-phase voltage source PWM rectifier. In the paper, the power control mathematical mode of the PWM rectifier is deduced based on the mathematical model of rectifier in synchronous d-q rotating coordinates, and a new voltage feed forward decoupling compensation control strategy is proposed. The simulation results show that the voltage and current of the three-phase PWM rectifier have better respond preference, the current aberrance is smaller and the voltage is steady under the control strategy. The PWM rectifier can implement PWM commute with unity power factor, but also feed back the energy to AC side with unity power factor.

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23

Oleschuk, Valentin, Gabriele Grandi, and Padmanaban Sanjeevikumar. "Simulation of Processes in Dual Three-Phase System on the Base of Four Inverters with Synchronized Modulation." Advances in Power Electronics 2011 (December 14, 2011): 1–9. http://dx.doi.org/10.1155/2011/581306.

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Novel method of space-vector-based pulse-width modulation (PWM) has been disseminated for synchronous control of four inverters feeding six-phase drive on the base of asymmetrical induction motor which has two sets of windings spatially shifted by 30 electrical degrees. Basic schemes of synchronized PWM, applied for control of four separate voltage-source inverters, allow both continuous phase voltages synchronization in the system and required power sharing between DC sources. Detailed MATLAB-based simulations show a behavior of six-phase system with continuous and discontinuous versions of synchronized PWM.

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24

Lin, Cheng Wu, Tian Jiao Liu, and Jun Gui. "Double Closed-Loop Control of the Three-Level Rectifier Based on Synchronous PI Current Decoupling." Applied Mechanics and Materials 385-386 (August 2013): 1179–83. http://dx.doi.org/10.4028/www.scientific.net/amm.385-386.1179.

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This paper analyzes the mathematical model of the three-level PWM rectifier in the three-phase stationary coordinate system and the two-phase synchronous rotating coordinate system. On this basis, the synchronous PI current double closed-loop decoupling control strategy is used to eliminate the impact between the d-q axis and relieve independent control of two axes. In order to simplify the complexity of the vector synthesis, the three-level space vector modulation (SVPWM) algorithm is studied. Transform the three-level space reference vector synthesis to the two-level. The mathematical model of the theoretical analysis are verified with Matlab/Simulink. The simulation result demonstrates that the design method is reasonable and effective, which makes the PWM rectifier excellent dynamic and static performance.

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25

Wei, Wei, Peng Xue, and Bin Zhang. "Simulation Study of Permanent Magnet Synchronous Motors Energy Feedback Control System." Applied Mechanics and Materials 380-384 (August 2013): 374–78. http://dx.doi.org/10.4028/www.scientific.net/amm.380-384.374.

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Combined with the brake working principle of Permanent magnet synchronous motors, the three-phase PWM rectifier mathematical model and Simulink simulation model are set up. On this basis, according to the design requirements of energy feedback system, the voltage current double-loop control is applied in this system. The space voltage vector tracking is achieved by the use of space voltage vector PWM algorithm. The system modeling and simulation study is conducted in the MATLAB simulation environment, and the correctness of the proposed program is verified, which provides the corresponding theoretical basis for the future product design.

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26

Chiang, Mao Hsiung, and Hao Ting Lin. "The Leveling Position Control of a Four-Axial Active Pneumatic Isolation System Using PWM-Driving Parallel Dual-On/Off Valves." Applied Mechanics and Materials 110-116 (October 2011): 3176–83. http://dx.doi.org/10.4028/www.scientific.net/amm.110-116.3176.

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This study aims to develop a leveling position control of an active PWM-controlled pneumatic isolation table system. A novel concept using parallel dual-on/off valves with PWM control signals is implemented to realize active control and to improve the conventional pneumatic isolation table that supported by four pneumatic cushion isolators. In this study, the cushion isolators are not only passive vibration isolation devices, but also pneumatic actuators in active position control. Four independent closed-loop position feedback control system are designed and implemented for the four axial isolators. In this study, on/off valves are used, and PWM is realized by software. Therefore, additional hardware circuit is not required to implement PWM and not only cost down but also reach control precision of demand. In the controller design, the Fourier series-based adaptive sliding-mode controller with H∞ tracking performance is used to deal with the uncertainty and time-varying problems of pneumatic system. Finally, the experiments on the pneumatic isolation table system for synchronous position and trajectory tracking control, including no-load and loading conditions, and synchronous position control with master-slave method, are implemented in order to verify that the controller for each cushion isolator can realize good position and trajectory tracking performance.

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27

Oleschuk, Valentin, and Gabriele Grandi. "Six-phase motor drive supplied by four voltage source inverters with synchronized space-vector PWM." Archives of Electrical Engineering 60, no. 4 (December 1, 2011): 445–58. http://dx.doi.org/10.2478/v10171-011-0037-0.

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Six-phase motor drive supplied by four voltage source inverters with synchronized space-vector PWMNovel method of space-vector-based pulsewidth modulation (PWM) has been disseminated for synchronous control of four inverters feeding six-phase drive based on asymmetrical induction motor which has two sets of windings spatially shifted by 30 electrical degrees. Basic schemes of synchronized PWM, applied for control of four separate voltage source inverters, allow both continuous phase voltages synchronization in the system and required power sharing between DC-sources. Simulations show a behavior of six-phase system with continuous and discontinuous versions of synchronized PWM.

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28

Ryu, Joon-Hyoung, June-Hee Lee, and June-Seok Lee. "Switching Frequency Determination of SiC-Inverter for High Efficiency Propulsion System of Railway Vehicle." Energies 13, no. 19 (September 24, 2020): 5035. http://dx.doi.org/10.3390/en13195035.

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This paper suggests the reasonable switching frequency determination method for achieving highest efficiency of the railway propulsion system consisting the silicon carbide (SiC) inverter and permanent magnet synchronous motor (PMSM). The SiC power device allows increasing the switching frequency of the inverter because it has the small switching power loss. The total efficiency is taken into account for determining the switching frequency of SiC inverter in this paper. In the efficiency analysis of SiC inverter and PMSM, the PMSM drive control is considered with the hybrid switching method combined the synchronous PWM and asynchronous PWM. The result of the analysis shows the efficiency curve of propulsion system depending on the switching frequency. The switching frequency having the minimum power loss of propulsion system is selected based on the extracted power loss curve.

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29

Hara, Takafumi, Takaya Tsukagoshi, Shun Taniguchi, and Toshiyuki Ajima. "Vibration Reduction of Permanent Magnet Synchronous Motor Driven by Synchronous PWM Control with Carrier Wave Phase Shifts." IEEJ Journal of Industry Applications 11, no. 2 (March 1, 2022): 379–87. http://dx.doi.org/10.1541/ieejjia.20012660.

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Hara, Takafumi, Takaya Tsukagoshi, Shun Taniguchi, and Toshiyuki Ajima. "Vibration Reduction of Permanent Magnet Synchronous Motor Driven by Synchronous PWM Control with Carrier Wave Phase Shifts." IEEJ Transactions on Industry Applications 141, no. 9 (September 1, 2021): 709–17. http://dx.doi.org/10.1541/ieejias.141.709.

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31

Zhao, Mei Hua, Min Fan, and Xiao Xin Wu. "The Control Strategy of the Rotor-Side PWM Converter Based on Doubly-Fed Induction Generator." Advanced Materials Research 542-543 (June 2012): 204–7. http://dx.doi.org/10.4028/www.scientific.net/amr.542-543.204.

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This paper proposed a control strategy for rotor side PWM converter based on the stator voltage orientation. First, the mathematical models of Doubly-fed Induction Generator (DFIG) in a synchronous rotating coordinate system is derived .Then designed the control scheme for rotor side PWM converter. Finally, experimental platform for double-fed wind power generation system based on Infineon's XC2785 microcontrollers is established. The experimental results verify the feasibility and correctness of the control strategy.

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32

Ni, Yi Feng, and Yong Qiang Zhu. "Dual-Current Loops Control Strategy of PWM Rectifier under Unbalanced Grid Voltage Conditions." Applied Mechanics and Materials 556-562 (May 2014): 2114–18. http://dx.doi.org/10.4028/www.scientific.net/amm.556-562.2114.

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The unbalanced grid voltage causes the current harmonics, the fluctuation of the active power in AC side and the fluctuation of the DC voltage. The dual-current loops control strategy can slove those problems. The positive and negative sequence components of grid voltages and currents were calculated based on the symmetrical component method and were used to calculate the instantaneous power in double dq rotate coordinate, which ratate at positive and negative synchronous angular velocity respectively. The dual-current loops control strategy was finally verified in simulation by comparing with the conventional synchronous PI current control. The simulation results show the dual-current loops control strategy is effective on eliminating the fluctuation of the active power in AC side and the fluctuation of the DC voltage.

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33

Fan, Lu Yi, Fang Li, and Kai Hang Wang. "Power Control of PWM Rectifier with Resistive and Reactive Load." Applied Mechanics and Materials 734 (February 2015): 841–46. http://dx.doi.org/10.4028/www.scientific.net/amm.734.841.

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The realization of power modeling and power control of PWM rectifier with resistive and reactive load is based on the method of Lyapunov. Firstly, PWM rectifier's mathematical power model is established in d-q synchronous rotating coordinates, and balance point is found according to the control requirement of the system and analysis the stability of the equilibrium point according to the Lyapunov method and invariant theory. Then PWM rectifier's power controller has been gotten through damping injection. The designed power controller realizes fast voltage tracking and makes the net side power factor as 1, which has great inhibitory effect on resistive and inductive disturbance. Influence on the system exerted by different damping injection is analyzed and feasibility of PWM rectifier's power control based on Lyapunov method is verified.

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34

Oğuz, Yüksel, İrfan Güney, and Hüseyin Çalık. "Power Quality Control and Design of Power Converter for Variable-Speed Wind Energy Conversion System with Permanent-Magnet Synchronous Generator." Scientific World Journal 2013 (2013): 1–14. http://dx.doi.org/10.1155/2013/783010.

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The control strategy and design of an AC/DC/AC IGBT-PMW power converter for PMSG-based variable-speed wind energy conversion systems (VSWECS) operation in grid/load-connected mode are presented. VSWECS consists of a PMSG connected to a AC-DC IGBT-based PWM rectifier and a DC/AC IGBT-based PWM inverter with LCL filter. In VSWECS, AC/DC/AC power converter is employed to convert the variable frequency variable speed generator output to the fixed frequency fixed voltage grid. The DC/AC power conversion has been managed out using adaptive neurofuzzy controlled inverter located at the output of controlled AC/DC IGBT-based PWM rectifier. In this study, the dynamic performance and power quality of the proposed power converter connected to the grid/load by output LCL filter is focused on. Dynamic modeling and control of the VSWECS with the proposed power converter is performed by using MATLAB/Simulink. Simulation results show that the output voltage, power, and frequency of VSWECS reach to desirable operation values in a very short time. In addition, when PMSG based VSWECS works continuously with the 4.5 kHz switching frequency, the THD rate of voltage in the load terminal is 0.00672%.

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35

Wang, Jiu He, and Hong Ren Yin. "Decoupling Control of Three Phase Boost Type PWM Rectifiers Based on Storage Function." Applied Mechanics and Materials 71-78 (July 2011): 3988–91. http://dx.doi.org/10.4028/www.scientific.net/amm.71-78.3988.

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Based on the model of three phase boost type PWM rectifier in synchronous dq coordinates, a simple control law, which transforms the rectifier control system into decoupling and linear one,is deduced based on storage function. New rectifier control system based on the law has many advantages, such as simpler structure, and low total harmonic distortion,and good robustness for load. Decouping control system of three phase boost type PWM rectifiers is proved feasible by simulink simulation.

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36

Park, Hyun-Jong, Han-Woong Ahn, and Sung-Chul Go. "A Study on Performance and Characteristic Analysis According to the Operating Point of IPMSM Drive." Energies 16, no. 3 (January 22, 2023): 1219. http://dx.doi.org/10.3390/en16031219.

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This study presents the characteristics and performance of a motor at the operating point based on pulse-width modulation (PWM). PWM is used in modulating the output voltage of a three-phase inverter. The PWM technique has advantages and disadvantages depending on the system size and operating range. For example, some discontinuous pulse-width modulation (DPWM) techniques are advantageous in low-cost systems because they can reduce the number of switches. Some PWM techniques are complicated for software construction and require a lot of computation. In this paper, PWM techniques were constructed by using the offset voltage injection method. Therefore, the construction of the PWM technique is simplified by the method. In an experimental setup, an interior permanent-magnet synchronous motor (IPMSM) and a three-phase inverter were implemented to test motor control performance depending on the PWM technique. In addition, the current control characteristics and inverter efficiency were analyzed and compared depending on the speed and load of the motor. According to the results of this paper, it is possible to compare the motor and inverter control characteristics using various types of PWM rapidly. Additionally, it will help to select an appropriate PWM technique for a specific system.

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37

Oleschuk, V., and V. Ermuratskii. "DOUBLE-DELTA-WINDING SYSTEM WITH NEUTRAL-POINT-CLAMPED CONVERTERS CONTROLLED BY SYNCHRONOUS MULTI-ZONE PWM." Praci Institutu elektrodinamiki Nacionalanoi akademii nauk Ukraini 2020, no. 56 (August 6, 2020): 59–63. http://dx.doi.org/10.15407/publishing2020.56.059.

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Nguyen, Dung Quang, Hau Huu Vo, and Pavel Brandstetter. "An improvement of direct torque controlled PMSM drive using PWM technique and kalman filter." Bulletin of Electrical Engineering and Informatics 12, no. 4 (August 1, 2023): 2069–76. http://dx.doi.org/10.11591/beei.v12i4.4697.

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The paper describes pulse-width-modulation (PWM) technique and Kalman filter (KF) process to improve performance of direct torque controlled permanent magnet synchronous motor (DTC-PMSM) drive. Performance of DTC methods are strongly affected by high stator current ripple. For lowering the ripple, high switching frequency space vector PWM and KF are utilized in the paper. Mathematical model of PMSM and calculations of important quantities of DTC applied to PMSM drive are presented in the ﬁrst part. The second part shows computation process of space vector PWM and KF. Performance indices are utilized to evaluate the drive structures. Theorectical assumptions are validated via simulations with Gaussian noised stator current measurement.

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39

Nguyen, Dung Quang, Hau Huu Vo, and Pavel Brandstetter. "An improvement of direct torque controlled PMSM drive using PWM technique and kalman filter." Bulletin of Electrical Engineering and Informatics 12, no. 4 (August 1, 2023): 2069–76. http://dx.doi.org/10.11591/eei.v12i4.4697.

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Abstract:

The paper describes pulse-width-modulation (PWM) technique and Kalman filter (KF) process to improve performance of direct torque controlled permanent magnet synchronous motor (DTC-PMSM) drive. Performance of DTC methods are strongly affected by high stator current ripple. For lowering the ripple, high switching frequency space vector PWM and KF are utilized in the paper. Mathematical model of PMSM and calculations of important quantities of DTC applied to PMSM drive are presented in the ﬁrst part. The second part shows computation process of space vector PWM and KF. Performance indices are utilized to evaluate the drive structures. Theorectical assumptions are validated via simulations with Gaussian noised stator current measurement.

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40

Hamza, Amar, Sara Altahir, and Xiangwu Yan. "Synchronverter Control for Parallel Operation of Cascaded H-Bridge Inverter." Indonesian Journal of Electrical Engineering and Computer Science 2, no. 1 (April 1, 2016): 107. http://dx.doi.org/10.11591/ijeecs.v2.i1.pp107-114.

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<p>A 21-levels cascaded H-bridge multilevel inverter topology based on three-phase voltage source inverter has been proposed as a superior replacement for conventional two-level in high voltage applications. In this work we have presented the usage of the new technique called virtual synchronous generator based synchronverter model to operate the multilevel inverter as synchronous generator, and to share active and reactive power automatically in case of parallel operated inverters of the same type. Carrier-based PWM is used to control each phase leg of the cascaded H-bridge multilevel inverter. This carrier-based PWM scheme is derived from the carrier phase disposition pulse width modulation strategy. By aid of MATLAB/Simulink package a simulation experiment is established to verify the performance of the proposed technique.</p><p> </p>

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Shun, Yang, and Li Da Zhang. "A Novel Generator Side Converter Control Scheme of Direct Driven PMSG Wind Turbine." Advanced Materials Research 631-632 (January 2013): 1095–100. http://dx.doi.org/10.4028/www.scientific.net/amr.631-632.1095.

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With the advance of electronic technology,the filed-oriented control of voltage space vector PWM have become more efficient in generator side converter control.This paper presented the direct driven wind turbine model and the permanent magnet synchronous generator (PMSG) model in synchronous rotating d-q reference frame.Using filed-oriented control of voltage space vector PWM in generator side converter control for enhance efficiency. The optimal control strategy can keep wind turbine working at optimal tip speed ratio for capture maximum wind power.A novel nonlinear PI controller for anti-windup implemented in control loop for highest efficiency of wind turbine which can be reached.Simulation results verified and shown via Matlab/Simulink that the performance of nonlinear PI controller for anti-windup in generator side converter control system is better than traditional PI controller in control loop for wind turbines.

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Wei, Shu Hua, and Ming Jin Hou. "Based on CM6900 Resonance IC Controller SRC LED Lamp Driver Circuit." Advanced Materials Research 383-390 (November 2011): 7018–24. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.7018.

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CM6900 is a kind of built-in synchronous rectifier drivers, OVP / OCP, and better soft-start mode, while a FM + PWM operation mode of the resonant controller IC, and its application in the constant current / constant voltage mode is very easy. Based CM6900's 90W SRC LED lamp drive circuit relative to the LLC drive circuit is easier to implement synchronous rectification, Efficiency (greater than or equal to 0.94), transformer design is simple (standard BOBBIN reduce mold costs).

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Sato, Masakazu, Shinji Doki, and Muneaki Ishida. "High-Fequency Equivalent Circuit of PM Synchronous Motor Driven by PWM Inverter." IEEJ Transactions on Industry Applications 124, no. 5 (2004): 464–70. http://dx.doi.org/10.1541/ieejias.124.464.

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Omar, A. M., and N. A. Rahim. "FPGA-based ASIC design of the three-phase synchronous PWM flyback converter." IEE Proceedings - Electric Power Applications 150, no. 3 (2003): 263. http://dx.doi.org/10.1049/ip-epa:20020681.

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45

Nonaka, Sakutaro, and Hiroshi Takami. "Low-Speed Drive of PWM-VSI-Fed Brushless Self-Excited Synchronous Motor." IEEE Transactions on Industry Applications IA-22, no. 5 (September 1986): 847–52. http://dx.doi.org/10.1109/tia.1986.4504803.

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Petrovic, V., A. M. Stankovic, and V. Blasko. "Position estimation in salient pm synchronous motors based on pwm excitation transients." IEEE Transactions on Industry Applications 39, no. 3 (May 2003): 835–43. http://dx.doi.org/10.1109/tia.2003.811776.

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Dong, Hanjing, Xiaogao Xie, and Lina Zhang. "A New Primary PWM Control Strategy for CCM Synchronous Rectification Flyback Converter." IEEE Transactions on Power Electronics 35, no. 5 (May 2020): 4457–61. http://dx.doi.org/10.1109/tpel.2019.2944492.

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Wang, Xu, Yan Xing, and Dan Yang. "Simulation of Three-Phase Voltage Rectifier Based on Voltage Space-Vector Method." Applied Mechanics and Materials 182-183 (June 2012): 1220–24. http://dx.doi.org/10.4028/www.scientific.net/amm.182-183.1220.

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The mathematical model in the two-phase synchronous rotating coordinate system of three-phase voltage PWM rectifier is set up. A novel and fast algorithm of Space Vector Pulse Modulation (SVPWM) for three- phase voltage rectifier is adopted in this paper. The MATLAB/SIMULINK simulation model is presented based on the mathematical model of PWM rectifier. The simulation results illustrate that this design scheme has some value for practical due to its merits of pollution-free, power factor regulation and bin-directional power flow.

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Jin, Xuefeng, Jiahao Liu, Wei Chen, and Tingna Shi. "Optimized Synchronous Pulse Width Modulation Strategy Based on Discontinuous Carriers." Energies 16, no. 5 (March 2, 2023): 2401. http://dx.doi.org/10.3390/en16052401.

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This article proposes a new technique called optimized discontinuous carrier pulse width modulation (ODCPWM), whose main objective is to solve the issue of significant output voltage harmonics of conventional synchronous carrier modulation at low carrier wave ratios. Based on the symmetry principle, the fundamental wave period is divided into regions; the carriers in adjacent regions are flipped, and the carrier width is changed symmetrically in each region to generate an unequal-width optimized discontinuous carrier pulse width modulation. In addition, using the weighted total harmonic distortion (WTHD) of the line voltage as an evaluation index, an optimized multi-mode PWM strategy is proposed to satisfy the system to operate stably in the whole speed range. The experimental results verify the effectiveness of the proposed strategy. The results show that ODCPWM proposed in this article can eliminate harmonics and multiples of three harmonics in line voltage harmonics. The VWTHD is lower, which improves the quality of the output waveform and makes the system operation more stable and reliable. The proposed multi-mode PWM strategy is smooth and shock-free during switching.

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Tola, Omokhafe J., Edwin A. Umoh, and Enesi A. Yahaya. "Pulse Width Modulation Analysis of Five-Level Inverter- Fed Permanent Magnet Synchronous Motors for Electric Vehicle Applications." International Journal of Robotics and Control Systems 1, no. 4 (November 21, 2021): 477–87. http://dx.doi.org/10.31763/ijrcs.v1i4.483.

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In recent times, intense research has been focused on the performance enhancement of permanent magnet synchronous motors (PMSM) for electric vehicle (EV) applications to reduce their torque and current ripples. Permanent magnet synchronous motors are widely used in electric vehicle systems due to their high efficiency and high torque density. To have a good dynamic and transient response, an appropriate inverter topology is required. In this paper, a five-level inverter fed PMSM for electric vehicle applications, realized via co-simulation in an electromagnetic suite environment with a reduced stator winding current of PMSM via the use of in-phase disposition (PD) pulse width modulation (PWM) techniques as the control strategy is presented. The proposed topology minimizes the total harmonic distortion (THD) in the inverter circuit and the motor fed and also improves the torque ripples and the steady-state flux when compared to conventional PWM techniques. A good dynamic response was achieved with less than 10A stator winding current, zero percent overshoot, and 0.02 second settling time synchronization. Thus, the stator currents are relatively low when compared to the conventional PWM. This topology contribution to the open problem of evolving strategies that can enhance the performance of electric drive systems used in unmanned aerial vehicles (UAV), mechatronics, and robotic systems.

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