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Gotowa bibliografia na temat „High Voltage High Pulse Power Switch”

Autor: Grafiati

Data publikacji: 6 września 2023

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Artykuły w czasopismach na temat "High Voltage High Pulse Power Switch"

Yang, Jia Zhi, Fei Yang, Sheng Li Yi, Cun Bo Jiang, Xing Ming Fan i Fan Yang. "Simulative and Experimental Research of High Isolate High Voltage Pulsed Power Supply". Applied Mechanics and Materials 321-324 (czerwiec 2013): 1429–33. http://dx.doi.org/10.4028/www.scientific.net/amm.321-324.1429.

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A high amplitude, fast rising time, and high isolating strength trigger signal is needed for triggering spark gap switch. A high voltage power supply scheme was verified by means of simulation in this paper. Proper parameters of power supply circuit were selected according to the simulation result. Finally, a pulsed power supply was developed. The experimental results show that a negative pulse with 25 kV isolating strength and 15 kV amplitude can be generated by the power supply, and this generated negative pulse can meet the demand of triggering spark gap switch.

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Petrov, A. V., S. K. Pavlov i Y. P. Usov. "Formation of high-power, high-voltage rectangular pulses with the controlled stabilization of the pulse peak". Laser and Particle Beams 35, nr 1 (8.02.2017): 154–58. http://dx.doi.org/10.1017/s0263034617000027.

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AbstractThe pulse shaper based on a capacitive storage device with an active switch operating on a resistive load is considered. The electrical circuit includes a capacitor with a reference voltage for the stabilization of peak of the pulse. The capacitor connected in parallel with a load via the unilateral conductive switch. A general analysis of the shaping circuit was carried out. Analytical expressions for determination of the stabilization accuracy and the stabilization duration have been obtained. The results of computer simulation of dependence of these characteristics as function of pulse parameters and shaper features are presented. The influence of short-term and abrupt change of the resistance load on the stabilization process of peak of the pulse is considered. The possibility of obtaining of pulses with a controlled stability of pulse peaks <1% for pulses with duration to 100 µs at voltages up to 20 kV and energy stored in a capacitor to 3.4 kJ is shown in prototype of the shaper.

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Baginski, Thomas A., Robert N. Dean i Steven P. Surgnier. "A New Robust One-Shot Switch for High-Power Pulse Applications". Additional Conferences (Device Packaging, HiTEC, HiTEN, and CICMT) 2011, DPC (1.01.2011): 001650–73. http://dx.doi.org/10.4071/2011dpc-wp21.

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High Voltage (HV) switches capable of operating at high speeds and over a wide range of voltages and energies are used in a variety of pulse power applications in material science and plasma physics. Of particular interest is the use of small-scale capacitor discharges to measure the electrical properties of materials as they are heated from solid through liquid to a gas phase. In a capacitive discharge unit (CDU), energy stored in a capacitor is coupled through a switch into a low-impedance transmission line, which typically terminates with a thin sample of material. The energy coupled to the sample is sufficient to cause vaporization. Voltages in such systems range from a few volts to thousands of volts. These vaporized materials are used either as plasma sources for physics experiments, or to propel a thin layer of electrically insulating polymer for high-pressure-impact studies. Several types of switches have been used to drive these systems, including triggered spark gap, dielectric breakdown, and mercury vapor switches. A wide variety of solid-state devices, such as the insulated gate bipolar transistors, are also being utilized for these applications. Inducing a high-pressure shock wave in a dielectric to produce a transition from dielectric to conductor has also been used as an efficient single-shot switch for capacitor discharges. The high-voltage micro-machined switch presented in this document has been designed as a single-use alternative to the more expensive triggered spark gaps and solid-stage devices. The plasma-bridge switch is intended for large-volume, relatively inexpensive systems, and a cost-effective switch for use in destructive testing.

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Jiang, Qiang. "The Design of 25KV High-Frequency High-Voltage Power Supply". Advanced Materials Research 912-914 (kwiecień 2014): 927–30. http://dx.doi.org/10.4028/www.scientific.net/amr.912-914.927.

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In this paper, a HV and HF switch power supply was designed, which was controlled through a single chip microcomputer, also the MOSFET was used as the switch power tube. The PWM (pulse width modulation) technique and half-bridge inverter topology have been used to invert AC into the DC that can be adjust from 0V~25KV and the operating frequency is 35KHz, Through the simulation with the Saber software and practical use, the feasibility of the scheme and the correctness of the design have been verified.

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Nan, Qiu, i Fan Yin Hai. "Digital Controlled High Power Mid-Frequency Pulsed Power Supply". Advanced Materials Research 108-111 (maj 2010): 1332–37. http://dx.doi.org/10.4028/www.scientific.net/amr.108-111.1332.

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In this article a novel scheme of high power mid-frequency pulse power supply is proposed. The supply is made up of two major stages. First stage is dual interleaved buck chopper stage in order to make the DC bus and output pulse voltage controllable. Second stage is a inverter converting the DC voltage into a series of square AC voltage pulse. IGBT module(300A-1200V) is used as the main switch device for the proposed supply is a high power application. As we know large capacity power IGBT module can hardly work as high as 40Khz[1], so to solve this problem, interleaved control scheme is incorporated. Basic ideas are to share the total switching losses. To combine several converters working under certain sequence is the key point. Final output pulse frequency is 20-40Khz,voltage level is 0-800V, and pulse width is 0-90% changeable. The whole system is concise effective. Experimental results verified the feasibility of abovementioned power supply.

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Yang, Hanwu, Zicheng Zhang, Jingming Gao, Tao Xun i Song Li. "A Repetitive Low Impedance High Power Microwave Driver". Electronics 11, nr 5 (3.03.2022): 784. http://dx.doi.org/10.3390/electronics11050784.

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A low impedance high power microwave (HPM) driver is designed, which can be used in studying multi-gigawatt HPM devices such as the magnetically insulated transmission line oscillator (MILO), based on a helical pulse forming line (PFL) and the Tesla pulse transformer technology. The co-axial PFL is insulated by ethanol–water mixture, whose dielectric constant can be adjusted; and the helical line increases the output pulse width as well as the impedance to make a better match with the load. By the optimal combination of PFL charging voltage and output switch working voltage, the reliability of the PFL can be improved. The Tesla transformer has partial magnetic cores to increase the coupling coefficient and is connected like an autotransformer to increase the voltage step-up ratio. The primary capacitor of the transformer is charged by a high voltage constant current power supply and discharged by a triggered switch. A transmission line is installed between the PFL and the HPM load, to further increase the load voltage. A ceramic disk vacuum interface is used for improving the vacuum of the HPM tube. The experiments show that the driver can operate at 30 GW peak power, 75 ns pulse width and 5 Hz repetition rate.

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Baginski, Thomas A., Robert N. Dean i Ed J. Wild. "A Micromachined Robust Planar Triggered Sparkgap Switch for High Power Pulse Applications". Additional Conferences (Device Packaging, HiTEC, HiTEN, and CICMT) 2010, DPC (1.01.2010): 001869–86. http://dx.doi.org/10.4071/2010dpc-wp24.

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High voltage (HV) switches capable of operating at high speeds with high current levels are used in a variety of applications in commercial and government systems. Examples of HV switches include triggered sparkgap, dielectric breakdown, and mercury vapor switches. The triggered sparkgap switch is a three-element, gas-filled, ceramic-to-metal, hermetically sealed, pressurized switch that operates in an arc discharge mode. Triggered sparkgaps have been in use for many years, providing precision timing and activation of in-flight functions such as missile stage separation. These applications involve the activation of electro-explosive devices such as an exploding bridge-wire [EBW] or an exploding foil initiator [EFI]. This paper discusses the fabrication and characterization of a novel high voltage planar discharge switch using micromachining techniques. The switch provides a low cost alternative to conventional triggered sparkgaps. The switch is designed for direct integration into the strip-line geometries used in a conventional capacitive discharge unit (CDU). The geometry of the device was selected to minimize parasitic impedances associated with conventional firing circuits. The switch design is microfabricated on an alumina substrate utilizing a patterned electron-beam deposited metallic stack. A polyimide layer selectively deposited over the metal stack provides dielectric isolation and passivation for the switch electrodes. A similar methodology was utilized to fabricate sample EFIs for switch validation tests with insensitive secondary high explosive (HE) pellets. The discharging of the HV capacitor through the patterened bridgefoil of an EFI results in rapid vaporization of the metal stack. The high pressure gas formed by the vaporized metal accelerates the adjacent polyimide layer to high velocity. The polyimde layer then impacts the HE pellet, inducing a shock wave, which results in prompt detonation of the material. Thus, this device is a type of MEMS actuator with a very specialized use. Design, fabrication and test data are presented and discussed.

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Zhu, Bo, He Su, Zhihan Fang, Guoyan Wu i Xinlao Wei. "Development of a High-Voltage Pulsed Electric Field Sterilization Power Supply Using a New Topology Circuit". Energies 16, nr 6 (15.03.2023): 2741. http://dx.doi.org/10.3390/en16062741.

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Traditional thermal sterilization technology is easy to implement and safe, but it will destroy food nutrition and change food taste. Therefore, people began to turn their attention to non-thermal sterilization. High-voltage pulsed electric field sterilization technology is one of them; it has attracted much attention because of its high efficiency and little damage to food. Different types of loads will cause serious trailing of the pulse falling edge. In view of this situation, this paper proposes a new topology circuit that combines a solid-state switch with a half-bridge Marx generator. It can be used for high-voltage pulsed electric field sterilization. By improving the structure of the classical Marx circuit, the high-voltage pulse power supply of the new topology circuit has the characteristics of steep rising edge and short falling edge delay; does not require isolation inductance or isolation resistance, which solves the isolation problem between the DC charging power supply and the high-voltage terminal; and has a good voltage-clamping function and load adaptability. The working process of the topology circuit under resistive, capacitive and inductive loads and the voltage clamping effect when the solid-state switch does not work properly in the discharge process are analyzed in detail. The power supply is composed of an adjustable DC power supply, five-stage half-bridge Marx generator and control protection circuit. A field programmable gate array (FPGA) is used as the controller to generate control signals, and optical fiber isolation is used to provide control signals for the main loop. The power supply can output a high-voltage square wave pulse with a voltage amplitude of 10 kV, maximum pulse number of 1000 per second, maximum pulse width of 20 μs, pulse rise time of smaller than 300 ns and short pulse drop time, and the repeated voltage amplitude, frequency and pulse width are adjustable, which can meet the requirements of a high-voltage pulse sterilization experiment.

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Samizadeh Nikoo, Mohammad, i Seyed Morad Ali Hashemi. "High-Power Nanosecond Pulse Generator With High-Voltage SRD and GDT Switch". IEEE Transactions on Plasma Science 43, nr 9 (wrzesień 2015): 3268–76. http://dx.doi.org/10.1109/tps.2015.2411251.

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Luo, Xiaoxiao, Qian Wang, Mingming Du, Yingkai Long i Xiping Jiang. "The Development of Solid-state Pulse Generator based on Marx Circuit with Chopping Switch". Journal of Physics: Conference Series 2491, nr 1 (1.04.2023): 012012. http://dx.doi.org/10.1088/1742-6596/2491/1/012012.

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Abstract A solid-state pulse source is mainly formed by replacing the spark switch in a traditional pulse source with semiconductor switch device. Compared with conventional gas switch devices such as spark switches, semiconductor switch devices have the advantages of high work repetition frequency, long service life, small size, high efficiency, high reliability, easy control, and active shutdown. However, there are still problems, such as the solid-state switch being easily broken down by high voltage, the rising and falling edges of the pulse being slow, and the loss is enormous. In this paper, a solid-state pulse generator based on Marx with a chopping switch circuit is developed, which effectively solves the above problems. The pulse generator comprises DC power, a switching power circuit, a Marx circuit with a chopping switch, a serial port touch screen, and an optical fiber transmission circuit.

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Rozprawy doktorskie na temat "High Voltage High Pulse Power Switch"

Zemánek, Miroslav. "Užití výkonových měničů ve zdrojích vysokého napětí". Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-233463.

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This work is concerned with power inverters for alternate high voltage power sources. The theoretical part describes the topology of inverters that can be used in alternate power sources. A model of voltage transformer is described in details to better understand the parasitic effects that are inevitably present in high voltage power sources and, therefore, have to be taken into consideration at the design of high voltage power sources. The work is oriented to problems of alternate high voltage power sources for ozone generators. This is the reason, why the theoretical and, partially, also the experimental part deal with the properties of ozone and its use. The experimental part solves high voltage inverter with capacitive load that is formed by discharge element of an ozone generator. Designed inverter is able to feed the capacitive load with high voltage at very short periods of time from several microseconds up to tens of nanoseconds. In comparison with the length of voltage pulses in common ozone generators, this pulses are more than 100-time shorter. This has a positive effect to silent discharge characteristics.

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Rodriguez, John Israel 1972. "Distributing switch circuits for high voltage pulse applications". Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/80609.

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Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1999.
Includes bibliographical references (p. 145).
by John Israel Rodriguez.
M.Eng.

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Norgard, Peter. "Development of a gigawatt repetitive pulse modulator and high-pressure switch test stand and results from high-pressure switch tests". Diss., Columbia, Mo. : University of Missouri-Columbia, 2006. http://hdl.handle.net/10355/4584.

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Thesis (M.S.)--University of Missouri-Columbia, 2006.
The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on April 22, 2009) Includes bibliographical references.

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Davari, Pooya. "High frequency high power converters for industrial applications". Thesis, Queensland University of Technology, 2013. https://eprints.qut.edu.au/62896/1/Pooya_Davari_Thesis.pdf.

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The main contribution of this project was to investigate power electronics technology in designing and developing high frequency high power converters for industrial applications. Therefore, the research was conducted at two levels; first at system level which mainly encapsulated the circuit topology and control scheme and second at application level which involves with real-world applications. Pursuing these objectives, varied topologies have been developed and proposed within this research. The main aim was to resolving solid-state switches limited power rating and operating speed while increasing the system flexibility considering the application characteristics. The developed new power converter configurations were applied to pulsed power and high power ultrasound applications for experimental validation.

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Zabihi, Sasan. "Flexible high voltage pulsed power supply for plasma applications". Thesis, Queensland University of Technology, 2011. https://eprints.qut.edu.au/48137/1/Sasan_Zabihi_Sheykhrajeh_Thesis.pdf.

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Demands for delivering high instantaneous power in a compressed form (pulse shape) have widely increased during recent decades. The flexible shapes with variable pulse specifications offered by pulsed power have made it a practical and effective supply method for an extensive range of applications. In particular, the release of basic subatomic particles (i.e. electron, proton and neutron) in an atom (ionization process) and the synthesizing of molecules to form ions or other molecules are among those reactions that necessitate large amount of instantaneous power. In addition to the decomposition process, there have recently been requests for pulsed power in other areas such as in the combination of molecules (i.e. fusion, material joining), gessoes radiations (i.e. electron beams, laser, and radar), explosions (i.e. concrete recycling), wastewater, exhausted gas, and material surface treatments. These pulses are widely employed in the silent discharge process in all types of materials (including gas, fluid and solid); in some cases, to form the plasma and consequently accelerate the associated process. Due to this fast growing demand for pulsed power in industrial and environmental applications, the exigency of having more efficient and flexible pulse modulators is now receiving greater consideration. Sensitive applications, such as plasma fusion and laser guns also require more precisely produced repetitive pulses with a higher quality. Many research studies are being conducted in different areas that need a flexible pulse modulator to vary pulse features to investigate the influence of these variations on the application. In addition, there is the need to prevent the waste of a considerable amount of energy caused by the arc phenomena that frequently occur after the plasma process. The control over power flow during the supply process is a critical skill that enables the pulse supply to halt the supply process at any stage. Different pulse modulators which utilise different accumulation techniques including Marx Generators (MG), Magnetic Pulse Compressors (MPC), Pulse Forming Networks (PFN) and Multistage Blumlein Lines (MBL) are currently employed to supply a wide range of applications. Gas/Magnetic switching technologies (such as spark gap and hydrogen thyratron) have conventionally been used as switching devices in pulse modulator structures because of their high voltage ratings and considerably low rising times. However, they also suffer from serious drawbacks such as, their low efficiency, reliability and repetition rate, and also their short life span. Being bulky, heavy and expensive are the other disadvantages associated with these devices. Recently developed solid-state switching technology is an appropriate substitution for these switching devices due to the benefits they bring to the pulse supplies. Besides being compact, efficient, reasonable and reliable, and having a long life span, their high frequency switching skill allows repetitive operation of pulsed power supply. The main concerns in using solid-state transistors are the voltage rating and the rising time of available switches that, in some cases, cannot satisfy the application’s requirements. However, there are several power electronics configurations and techniques that make solid-state utilisation feasible for high voltage pulse generation. Therefore, the design and development of novel methods and topologies with higher efficiency and flexibility for pulsed power generators have been considered as the main scope of this research work. This aim is pursued through several innovative proposals that can be classified under the following two principal objectives. • To innovate and develop novel solid-state based topologies for pulsed power generation • To improve available technologies that have the potential to accommodate solid-state technology by revising, reconfiguring and adjusting their structure and control algorithms. The quest to distinguish novel topologies for a proper pulsed power production was begun with a deep and through review of conventional pulse generators and useful power electronics topologies. As a result of this study, it appears that efficiency and flexibility are the most significant demands of plasma applications that have not been met by state-of-the-art methods. Many solid-state based configurations were considered and simulated in order to evaluate their potential to be utilised in the pulsed power area. Parts of this literature review are documented in Chapter 1 of this thesis. Current source topologies demonstrate valuable advantages in supplying the loads with capacitive characteristics such as plasma applications. To investigate the influence of switching transients associated with solid-state devices on rise time of pulses, simulation based studies have been undertaken. A variable current source is considered to pump different current levels to a capacitive load, and it was evident that dissimilar dv/dts are produced at the output. Thereby, transient effects on pulse rising time are denied regarding the evidence acquired from this examination. A detailed report of this study is given in Chapter 6 of this thesis. This study inspired the design of a solid-state based topology that take advantage of both current and voltage sources. A series of switch-resistor-capacitor units at the output splits the produced voltage to lower levels, so it can be shared by the switches. A smart but complicated switching strategy is also designed to discharge the residual energy after each supply cycle. To prevent reverse power flow and to reduce the complexity of the control algorithm in this system, the resistors in common paths of units are substituted with diode rectifiers (switch-diode-capacitor). This modification not only gives the feasibility of stopping the load supply process to the supplier at any stage (and consequently saving energy), but also enables the converter to operate in a two-stroke mode with asymmetrical capacitors. The components’ determination and exchanging energy calculations are accomplished with respect to application specifications and demands. Both topologies were simply modelled and simulation studies have been carried out with the simplified models. Experimental assessments were also executed on implemented hardware and the approaches verified the initial analysis. Reports on details of both converters are thoroughly discussed in Chapters 2 and 3 of the thesis. Conventional MGs have been recently modified to use solid-state transistors (i.e. Insulated gate bipolar transistors) instead of magnetic/gas switching devices. Resistive insulators previously used in their structures are substituted by diode rectifiers to adjust MGs for a proper voltage sharing. However, despite utilizing solid-state technology in MGs configurations, further design and control amendments can still be made to achieve an improved performance with fewer components. Considering a number of charging techniques, resonant phenomenon is adopted in a proposal to charge the capacitors. In addition to charging the capacitors at twice the input voltage, triggering switches at the moment at which the conducted current through switches is zero significantly reduces the switching losses. Another configuration is also introduced in this research for Marx topology based on commutation circuits that use a current source to charge the capacitors. According to this design, diode-capacitor units, each including two Marx stages, are connected in cascade through solid-state devices and aggregate the voltages across the capacitors to produce a high voltage pulse. The polarity of voltage across one capacitor in each unit is reversed in an intermediate mode by connecting the commutation circuit to the capacitor. The insulation of input side from load side is provided in this topology by disconnecting the load from the current source during the supply process. Furthermore, the number of required fast switching devices in both designs is reduced to half of the number used in a conventional MG; they are replaced with slower switches (such as Thyristors) that need simpler driving modules. In addition, the contributing switches in discharging paths are decreased to half; this decrease leads to a reduction in conduction losses. Associated models are simulated, and hardware tests are performed to verify the validity of proposed topologies. Chapters 4, 5 and 7 of the thesis present all relevant analysis and approaches according to these topologies.

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Cooperstock, David Michael. "Design, construction, and implementation of a high voltage, pulsed power test bed for the study of GaAs and SiC optically triggered switches /". free to MU campus, to others for purchase, 2004. http://wwwlib.umi.com/cr/mo/fullcit?p1421126.

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Benwell, Andrew L. "Flashover prevention on polystyrene high voltage insulators in a vacuum". Diss., Columbia, Mo. : University of Missouri-Columbia, 2007. http://hdl.handle.net/10355/5018.

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Thesis (M.S.)--University of Missouri-Columbia, 2007.
The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on March 18, 2008) Includes bibliographical references.

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Hibbard, John Arthur 1959. "A HIGH VOLTAGE D.C. PULSE SYSTEM AND ASSOCIATED ATHERMAL, IN VITRO EXPERIMENTS (POWER, SHORT, SYNERGISM)". Thesis, The University of Arizona, 1986. http://hdl.handle.net/10150/275500.

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Lindblom, Adam. "Inductive Pulse Generation". Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-6699.

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Nami, Alireza. "A new multilevel converter configuration for high power and high quality applications". Thesis, Queensland University of Technology, 2010. https://eprints.qut.edu.au/33216/1/Alireza_Nami_Thesis.pdf.

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The Queensland University of Technology (QUT) allows the presentation of theses for the Degree of Doctor of Philosophy in the format of published or submitted papers, where such papers have been published, accepted or submitted during the period of candidature. This thesis is composed of ten published /submitted papers and book chapters of which nine have been published and one is under review. This project is financially supported by an Australian Research Council (ARC) Discovery Grant with the aim of investigating multilevel topologies for high quality and high power applications, with specific emphasis on renewable energy systems. The rapid evolution of renewable energy within the last several years has resulted in the design of efficient power converters suitable for medium and high-power applications such as wind turbine and photovoltaic (PV) systems. Today, the industrial trend is moving away from heavy and bulky passive components to power converter systems that use more and more semiconductor elements controlled by powerful processor systems. However, it is hard to connect the traditional converters to the high and medium voltage grids, as a single power switch cannot stand at high voltage. For these reasons, a new family of multilevel inverters has appeared as a solution for working with higher voltage levels. Besides this important feature, multilevel converters have the capability to generate stepped waveforms. Consequently, in comparison with conventional two-level inverters, they present lower switching losses, lower voltage stress across loads, lower electromagnetic interference (EMI) and higher quality output waveforms. These properties enable the connection of renewable energy sources directly to the grid without using expensive, bulky, heavy line transformers. Additionally, they minimize the size of the passive filter and increase the durability of electrical devices. However, multilevel converters have only been utilised in very particular applications, mainly due to the structural limitations, high cost and complexity of the multilevel converter system and control. New developments in the fields of power semiconductor switches and processors will favor the multilevel converters for many other fields of application. The main application for the multilevel converter presented in this work is the front-end power converter in renewable energy systems. Diode-clamped and cascade converters are the most common type of multilevel converters widely used in different renewable energy system applications. However, some drawbacks – such as capacitor voltage imbalance, number of components, and complexity of the control system – still exist, and these are investigated in the framework of this thesis. Various simulations using software simulation tools are undertaken and are used to study different cases. The feasibility of the developments is underlined with a series of experimental results. This thesis is divided into two main sections. The first section focuses on solving the capacitor voltage imbalance for a wide range of applications, and on decreasing the complexity of the control strategy on the inverter side. The idea of using sharing switches at the output structure of the DC-DC front-end converters is proposed to balance the series DC link capacitors. A new family of multioutput DC-DC converters is proposed for renewable energy systems connected to the DC link voltage of diode-clamped converters. The main objective of this type of converter is the sharing of the total output voltage into several series voltage levels using sharing switches. This solves the problems associated with capacitor voltage imbalance in diode-clamped multilevel converters. These converters adjust the variable and unregulated DC voltage generated by renewable energy systems (such as PV) to the desirable series multiple voltage levels at the inverter DC side. A multi-output boost (MOB) converter, with one inductor and series output voltage, is presented. This converter is suitable for renewable energy systems based on diode-clamped converters because it boosts the low output voltage and provides the series capacitor at the output side. A simple control strategy using cross voltage control with internal current loop is presented to obtain the desired voltage levels at the output voltage. The proposed topology and control strategy are validated by simulation and hardware results. Using the idea of voltage sharing switches, the circuit structure of different topologies of multi-output DC-DC converters – or multi-output voltage sharing (MOVS) converters – have been proposed. In order to verify the feasibility of this topology and its application, steady state and dynamic analyses have been carried out. Simulation and experiments using the proposed control strategy have verified the mathematical analysis. The second part of this thesis addresses the second problem of multilevel converters: the need to improve their quality with minimum cost and complexity. This is related to utilising asymmetrical multilevel topologies instead of conventional multilevel converters; this can increase the quality of output waveforms with a minimum number of components. It also allows for a reduction in the cost and complexity of systems while maintaining the same output quality, or for an increase in the quality while maintaining the same cost and complexity. Therefore, the asymmetrical configuration for two common types of multilevel converters – diode-clamped and cascade converters – is investigated. Also, as well as addressing the maximisation of the output voltage resolution, some technical issues – such as adjacent switching vectors – should be taken into account in asymmetrical multilevel configurations to keep the total harmonic distortion (THD) and switching losses to a minimum. Thus, the asymmetrical diode-clamped converter is proposed. An appropriate asymmetrical DC link arrangement is presented for four-level diode-clamped converters by keeping adjacent switching vectors. In this way, five-level inverter performance is achieved for the same level of complexity of the four-level inverter. Dealing with the capacitor voltage imbalance problem in asymmetrical diodeclamped converters has inspired the proposal for two different DC-DC topologies with a suitable control strategy. A Triple-Output Boost (TOB) converter and a Boost 3-Output Voltage Sharing (Boost-3OVS) converter connected to the four-level diode-clamped converter are proposed to arrange the proposed asymmetrical DC link for the high modulation indices and unity power factor. Cascade converters have shown their abilities and strengths in medium and high power applications. Using asymmetrical H-bridge inverters, more voltage levels can be generated in output voltage with the same number of components as the symmetrical converters. The concept of cascading multilevel H-bridge cells is used to propose a fifteen-level cascade inverter using a four-level H-bridge symmetrical diode-clamped converter, cascaded with classical two-level Hbridge inverters. A DC voltage ratio of cells is presented to obtain maximum voltage levels on output voltage, with adjacent switching vectors between all possible voltage levels; this can minimize the switching losses. This structure can save five isolated DC sources and twelve switches in comparison to conventional cascade converters with series two-level H bridge inverters. To increase the quality in presented hybrid topology with minimum number of components, a new cascade inverter is verified by cascading an asymmetrical four-level H-bridge diode-clamped inverter. An inverter with nineteen-level performance was achieved. This synthesizes more voltage levels with lower voltage and current THD, rather than using a symmetrical diode-clamped inverter with the same configuration and equivalent number of power components. Two different predictive current control methods for the switching states selection are proposed to minimise either losses or THD of voltage in hybrid converters. High voltage spikes at switching time in experimental results and investigation of a diode-clamped inverter structure raised another problem associated with high-level high voltage multilevel converters. Power switching components with fast switching, combined with hard switched-converters, produce high di/dt during turn off time. Thus, stray inductance of interconnections becomes an important issue and raises overvoltage and EMI issues correlated to the number of components. Planar busbar is a good candidate to reduce interconnection inductance in high power inverters compared with cables. The effect of different transient current loops on busbar physical structure of the high-voltage highlevel diode-clamped converters is highlighted. Design considerations of proper planar busbar are also presented to optimise the overall design of diode-clamped converters.

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Części książek na temat "High Voltage High Pulse Power Switch"

Burger, J. W., C. E. Baum, W. D. Prather, R. J. Torres, T. C. Tran, M. D. Abdalla, M. C. Skipper, B. C. Cockreham i D. P. McLemore. "Design and Development of a High Voltage Coaxial Hydrogen Switch". W Ultra-Wideband, Short-Pulse Electromagnetics 6, 381–90. Boston, MA: Springer US, 2003. http://dx.doi.org/10.1007/978-1-4419-9146-1_34.

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Liu, Z., A. J. M. Pemen, E. J. M. van Heesch, K. Yan, G. J. J. Winands i D. B. Pawlok. "A Multiple-switch Technology for High-power Pulse Discharging". W Electrostatic Precipitation, 704–8. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-89251-9_147.

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Lavanya, A., J. Divya Navamani, Abdul Nihal, Aditya Narain i Aashi. "Novel High Voltage Pulse Generator Structure for Water Treatment Applications". W Recent Advances in Power Electronics and Drives, 109–18. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-7728-2_8.

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Takeuchi, Daisuke, i Satoshi Koizumi. "Diamond PN/PIN Diode Type Electron Emitter with Negative Electron Affinity and Its Potential for the High Voltage Vacuum Power Switch". W Topics in Applied Physics, 237–72. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-09834-0_8.

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Nunna, S. D. S., B. A. Raju i KVS Ramachandra Murthy. "A Nine-Level Symmetrical Multilevel Inverter with Switches". W Advances in Transdisciplinary Engineering. IOS Press, 2023. http://dx.doi.org/10.3233/atde221291.

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Due to the lower tensile low-distortion overall output voltage with power switch stress, the multilevel inverter (MLI) is popular. MLI does however have several semiconductor switches and therefore increases the complexity of the switches. New symmetric and asymmetric MLI structures are proposed in this report. According to experts, the proposed structures require less controlled switches, power diodes, and condensers than both conventional and recently proposed topologies. The size, cost, and complexity of the DC voltage sources, switches, and drivers can be decreased, while the total performance can be improved. Reducing stress with a high voltage switch. Moreover, scientists have explored several types of switches, power diodes, the need for a driver circuit, DC voltage sources, and blocking tension, and have compared the three available topologies (traditional, present and newer). Many pulse width modulation techniques are employed to produce switching pulses. Experimentally validated topology viability has been followed by extensive simulation study using MATLAB/Simulink.

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Sathyanathan, P., P. Usha Rani i Promod Ranjan Debnath. "Single Phase Transformerless Switched Capacitor Multi Level Inverter for Solar PV Applications". W Artificial Intelligence and Communication Technologies, 789–806. Wyd. 2023. Soft Computing Research Society, 2023. http://dx.doi.org/10.52458/978-81-955020-5-9-74.

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Multilevel inverters (MLIs) have been proposed for the purpose of increase power level and to improve the power factor and total harmonic distortion (THD) in comparison with conventional two-level inverters. This technological advancement helps to achieve high performance and low cost, transformer less multi-level inverters which may commonly exploited in grid tied Photovoltaic (PV) generating systems. The application areas of MLIs are residential use in uninterruptible power supplies (UPSs); All these applications require increased reliability in terms of lower switching losses, increased power factor, and low total harmonic distortion (THD) for ensuring robust and smooth operation. Selection of control strategy for MLIs is one of the important aspects while designing of MLI. SPWM (Sinusoidal pulse width modulation) technique has been selected and same is used in the proposed transformer less switch capacitor based MLIs. SPWM which is based on comparing the modulating and carrier signal for generating the switching pulses, is the fundamental switching and control strategy generally used in MLI control. The PWM method used to control the switching sequences of inverters is directly responsible for controlling the output waveforms of current and voltage, while defining the efficiency of the inverter by managing the switching losses and THD ratios. This paper proposes high efficient nine level, eleven level, thirteen level & fifteen level switched capacitor-based inverter. Further total harmonic distortion for each level has been calculated using MATLAB simulation and the value observed for the same is compared for each level of MLI.

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"SWITCH". W Introduction to High Power Pulse Technology, 142–207. WORLD SCIENTIFIC, 1995. http://dx.doi.org/10.1142/9789812831934_0005.

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Dapeng, Xu, Wu Yan, Liang Ping i Li Guofeng. "A Double Short Pulse High-Voltage Power-Supply Based On DSP". W Recent Developments in Applied Electrostatics, 381–84. Elsevier, 2004. http://dx.doi.org/10.1016/b978-008044584-7.50097-9.

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Besson, G., J. D. Pahud, M. Q. Tran, W. Schminke i N. Tomljenovic. "Regulated high voltage power supply for gyrotrons based on pulse step modulator technology". W Fusion Technology 1994, 517–20. Elsevier, 1995. http://dx.doi.org/10.1016/b978-0-444-82220-8.50097-2.

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Khalid, Mohd Rizwan, Adil Sarwar i Ibrahim Alsaidan. "Multi-Level Inverters Interfacing Electric Vehicle Charging Stations With Microgrid for Vehicle-to-Grid (V2G) Applications". W Developing Charging Infrastructure and Technologies for Electric Vehicles, 178–94. IGI Global, 2022. http://dx.doi.org/10.4018/978-1-7998-6858-3.ch009.

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Multi-level inverters (MLI) are power electronic converters that convert DC power to AC power with high power-quality of output voltage waveforms. These MLI are the main streamline converters for integrating dc power of EV with microgrids. Thus, the recent interest of researchers is to investigate the MLI with a lower number of active and passive switch counts which could integrate the DC power of EV to the microgrid with the boosting ability. This chapter discusses various topologies of MLI for the integration of the DC power of EV to the grid for vehicle-to-grid (V2G) applications. MLI converts DC power to AC power with high quality of output voltage waveform. Thus, the recent interest of researchers is to investigate the MLI with a lower number of active and passive switch counts which could integrate the DC power of EV to the microgrid. Also, MLI must be capable of boosting the voltage level to meet the grid requirements. The aim of this chapter is to discuss the various topologies of MLI for the integration of DC power of EV to the grid for vehicle-to-grid (V2G) applications.

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Streszczenia konferencji na temat "High Voltage High Pulse Power Switch"

Donaldson, William R. "High Speed, High Repetition Rate, High Voltage Photoconductive Switching". W Picosecond Electronics and Optoelectronics. Washington, D.C.: Optica Publishing Group, 1987. http://dx.doi.org/10.1364/peo.1987.we1.

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We describe a method of producing robust silicon photconductive switches. These switches are used in high power applications where it is necessary to switch high voltages on the picosecond time scale. They have the advantage that they are activated by the bulk absorption of light in a semiconductor.1 Thus avalanching and transit time effects normally associated with high voltage switches are absent. As a result the switches have no jitter with respect to the optical pulse and very little heating due to the joule energy deposited in the switch as they turn on.2 These qualities make these switches desirable in applications which require parallelism or low thermal energy deposited in the switch. However, photoconductive switches cannot be used in practical applications until they can be proven reliable.

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Melissen, W., i G. G. Wajer. "High Voltage Thyristor Switch". W 2007 IEEE Pulsed Power Plasma Science Conference. IEEE, 2007. http://dx.doi.org/10.1109/ppps.2007.4345652.

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James, G. F., G. B. McHale, P. A. Arnold, A. S. Runtal, P. S. Cardinale i L. S. Pades. "NIF solid-state switch pulse generator optimization for multi-pulse operation". W 2014 IEEE International Power Modulator and High Voltage Conference (IPMHVC). IEEE, 2014. http://dx.doi.org/10.1109/ipmhvc.2014.7287238.

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Boriskin, A. S., Yu V. Vlasov, V. A. Demidov, S. A. Kazakov, E. V. Shapovalov, E. I. Schetnikov i V. D. Selemir. "High-Voltage Pulse Formation with Explosive Opening Switch". W 2007 IEEE Pulsed Power Plasma Science Conference. IEEE, 2007. http://dx.doi.org/10.1109/ppps.2007.4345865.

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Glidden, S. C. "High voltage, high current, high di/dt solid state switch". W IEE Symposium Pulsed Power 2001. IEE, 2001. http://dx.doi.org/10.1049/ic:20010122.

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Deb, Pankaj, Bijayalaxmi Sethi, Laxman Rongali, Manraj Meena, Rishi Verma i Archana Sharma. "Generation of high voltage nanosecond pulses using Pulse Sharpening switch". W 2021 1st International Conference on Power Electronics and Energy (ICPEE). IEEE, 2021. http://dx.doi.org/10.1109/icpee50452.2021.9358472.

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Strowitzki, Claus F. "Bridge topology as primary switch for magnetic pulse compression circuit". W 2016 IEEE International Power Modulator and High Voltage Conference (IPMHVC). IEEE, 2016. http://dx.doi.org/10.1109/ipmhvc.2016.8012906.

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Atkinson, D. "A novel compact high voltage triggerable switch". W IEE Symposium Pulsed Power 2000. IEE, 2000. http://dx.doi.org/10.1049/ic:20000307.

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Glover, S. F., P. J. Foster, D. H. McDaniel, F. E. White, G. E. Pena i F. J. Zutavern. "Pulsed power switch modeling for broad operation". W 2012 IEEE International Power Modulator and High Voltage Conference (IPMHVC). IEEE, 2012. http://dx.doi.org/10.1109/ipmhvc.2012.6518861.

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Yasu, Keita, Yasushi Minamitani i Ken Nukaga. "Development of high power burst pulse generator based on magnetic switch for bioelectrics application". W 2016 IEEE International Power Modulator and High Voltage Conference (IPMHVC). IEEE, 2016. http://dx.doi.org/10.1109/ipmhvc.2016.8012802.

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Raporty organizacyjne na temat "High Voltage High Pulse Power Switch"

Neri, J. M., J. R. Boller, P. F. Ottinger, B. V. Weber i F. C. Young. High voltage, high power operation of the plasma erosion opening switch. Office of Scientific and Technical Information (OSTI), kwiecień 1987. http://dx.doi.org/10.2172/6472201.

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Hirshfield, Jay L. Plasma Switch for High-Power Active Pulse Compressor. Office of Scientific and Technical Information (OSTI), listopad 2013. http://dx.doi.org/10.2172/1098136.

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Jay L. Hirshfield. High-Power Plasma Switch for 11.4 GHz Microwave Pulse Compressor. Office of Scientific and Technical Information (OSTI), marzec 2010. http://dx.doi.org/10.2172/972909.

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Mayhall, D., i J. Yee. Prediction of high-voltage, broadband rf pulse generation from an air gas avalanche switch. Office of Scientific and Technical Information (OSTI), marzec 1990. http://dx.doi.org/10.2172/6939168.

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Hirshfield, Jay L. Ferroelectric switch for a high-power Ka-band active pulse compressor. Office of Scientific and Technical Information (OSTI), grudzień 2013. http://dx.doi.org/10.2172/1111110.

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Ibitayo, Dimeji, Gail Koebke, Damian Urciuoli i C. W. Tipton. Fabrication of High-Voltage Bridge Rectifier Modules for Pulse Power Applications. Fort Belvoir, VA: Defense Technical Information Center, wrzesień 2014. http://dx.doi.org/10.21236/ada609891.

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Tantawi, Sami. Development of High Power X-Band Semiconductor RF Switch for Pulse Compression Systems of Future Linear Colliders. Office of Scientific and Technical Information (OSTI), listopad 2000. http://dx.doi.org/10.2172/784865.

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Guo, Jiquan. The Development of the Electrically Controlled High Power RF Switch and Its Application to Active RF Pulse Compression Systems. Office of Scientific and Technical Information (OSTI), grudzień 2008. http://dx.doi.org/10.2172/953016.

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