Pub Date : 2000-06-26DOI: 10.1109/MODSYM.2000.896166
V. Efanov
There was developed a new class of superpower closing solid state switches fast ionization devices (FID). The FID are based on a new physical phenomenon-electron-hole plasma supergeneration in solid-state. FIDs permit to combine the formerly incompatible characteristics in one device: high operating voltage up to 5 kV and the turn-on time less than 1 ns, the operating current may reach 10 kA, di/dt being more than 100 kA/microsecond, the FID jitter is less than 20 ps, the possibility of series joining of FIDs in stacks with operation voltage of tens of kilovolts, maintaining turn-on time about some nanoseconds. FID permit to replace power thyratrons and discharge gap switches and provide completely new possibilities unreachable with gas discharge devices.
{"title":"Fast ionization devices (FID)-a new class of superpower switches","authors":"V. Efanov","doi":"10.1109/MODSYM.2000.896166","DOIUrl":"https://doi.org/10.1109/MODSYM.2000.896166","url":null,"abstract":"There was developed a new class of superpower closing solid state switches fast ionization devices (FID). The FID are based on a new physical phenomenon-electron-hole plasma supergeneration in solid-state. FIDs permit to combine the formerly incompatible characteristics in one device: high operating voltage up to 5 kV and the turn-on time less than 1 ns, the operating current may reach 10 kA, di/dt being more than 100 kA/microsecond, the FID jitter is less than 20 ps, the possibility of series joining of FIDs in stacks with operation voltage of tens of kilovolts, maintaining turn-on time about some nanoseconds. FID permit to replace power thyratrons and discharge gap switches and provide completely new possibilities unreachable with gas discharge devices.","PeriodicalId":369603,"journal":{"name":"Conference Record of the 2000 Twenty-fourth International Power Modulator Symposium","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114905172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2000-06-26DOI: 10.1109/MODSYM.2000.896174
R. Limpaecher, R. Rodriguez, J. O'Loughlin
A new inverter topology well suited for high voltage and high power applications promises near harmonic free operation, low losses and high packing densities. The new inverter is based on standard thyristors for the switching using 'pulse frequency modulation'. This converter topology is being investigated for 20 MW ship propulsion system and yields a power density 5.5 MW/m/sup 3/ in comparison with 0.4 MW/m/sup 3/ for PWM converter with the same bi-directional functionality. Another major emphasis is the application of this converter topology for regulated high voltage DC voltage, such as for a 5 MW klystron power supply or a PFN charger. The key feature of this converter topology is the unique converter integration with a high frequency transformation stage. This permits a significant weight and volume reduction over other converter topologies and conventional power supplies. This paper specifically addresses the design for a 350 kW klystron power supply with an input of 480 V, 400 Hz with a regulated 50 kV DC output. The analysis of the inverter topology and the optimized magnetic components are presented.
{"title":"Harmonic free new inverter topology for high voltage, high power applications","authors":"R. Limpaecher, R. Rodriguez, J. O'Loughlin","doi":"10.1109/MODSYM.2000.896174","DOIUrl":"https://doi.org/10.1109/MODSYM.2000.896174","url":null,"abstract":"A new inverter topology well suited for high voltage and high power applications promises near harmonic free operation, low losses and high packing densities. The new inverter is based on standard thyristors for the switching using 'pulse frequency modulation'. This converter topology is being investigated for 20 MW ship propulsion system and yields a power density 5.5 MW/m/sup 3/ in comparison with 0.4 MW/m/sup 3/ for PWM converter with the same bi-directional functionality. Another major emphasis is the application of this converter topology for regulated high voltage DC voltage, such as for a 5 MW klystron power supply or a PFN charger. The key feature of this converter topology is the unique converter integration with a high frequency transformation stage. This permits a significant weight and volume reduction over other converter topologies and conventional power supplies. This paper specifically addresses the design for a 350 kW klystron power supply with an input of 480 V, 400 Hz with a regulated 50 kV DC output. The analysis of the inverter topology and the optimized magnetic components are presented.","PeriodicalId":369603,"journal":{"name":"Conference Record of the 2000 Twenty-fourth International Power Modulator Symposium","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124295725","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2000-06-26DOI: 10.1109/MODSYM.2000.896191
R. Richter-Sand, R. Adler, K. Rust
In this paper we summarize the progress made in demonstrating the application of solid state switching to accelerator power systems. We discuss in considerable detail the development of a klystron drive system for an ion linac which uses a minimal number of IGBT components to produce average power levels of 60 kW-180 kW at 125 kV and peak powers of 7.5 MW.
{"title":"High voltage high power klystron drivers using flexible solid state IGBT modules","authors":"R. Richter-Sand, R. Adler, K. Rust","doi":"10.1109/MODSYM.2000.896191","DOIUrl":"https://doi.org/10.1109/MODSYM.2000.896191","url":null,"abstract":"In this paper we summarize the progress made in demonstrating the application of solid state switching to accelerator power systems. We discuss in considerable detail the development of a klystron drive system for an ion linac which uses a minimal number of IGBT components to produce average power levels of 60 kW-180 kW at 125 kV and peak powers of 7.5 MW.","PeriodicalId":369603,"journal":{"name":"Conference Record of the 2000 Twenty-fourth International Power Modulator Symposium","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128038157","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2000-06-26DOI: 10.1109/MODSYM.2000.896173
H. Sree, N. Mohan
Power quality studies have established that voltage sags are the most prevalent of all power system disturbances, affecting industrial and commercial customers. Their effects are most felt in process industry equipment, like adjustable speed drives and contactors, resulting in equipment down times, clean up and re-calibration, costing to the tune of millions of dollars. Many load-end solutions have been proposed which include constant voltage transformers (CVTs), UPS and line-frequency-transformer-based series voltage injection devices (example: DVR and SSVR). These approaches, however, have their respective limitations with regard to capabilities, size and/or cost. This paper investigates a new topology to mitigating voltage sags by employing a high-frequency-transformer-link in the series voltage injection approach, resulting in substantial savings in size and weight. Suitable switching logic and control strategies have been implemented. Design issues of the proposed approach for different load types are discussed. Simulation results for the single-phase implementation are presented. Experimental results from a single-phase proof-of concept prototype are shown.
{"title":"High-frequency-link cycloconverter-based DVR for voltage sag mitigation","authors":"H. Sree, N. Mohan","doi":"10.1109/MODSYM.2000.896173","DOIUrl":"https://doi.org/10.1109/MODSYM.2000.896173","url":null,"abstract":"Power quality studies have established that voltage sags are the most prevalent of all power system disturbances, affecting industrial and commercial customers. Their effects are most felt in process industry equipment, like adjustable speed drives and contactors, resulting in equipment down times, clean up and re-calibration, costing to the tune of millions of dollars. Many load-end solutions have been proposed which include constant voltage transformers (CVTs), UPS and line-frequency-transformer-based series voltage injection devices (example: DVR and SSVR). These approaches, however, have their respective limitations with regard to capabilities, size and/or cost. This paper investigates a new topology to mitigating voltage sags by employing a high-frequency-transformer-link in the series voltage injection approach, resulting in substantial savings in size and weight. Suitable switching logic and control strategies have been implemented. Design issues of the proposed approach for different load types are discussed. Simulation results for the single-phase implementation are presented. Experimental results from a single-phase proof-of concept prototype are shown.","PeriodicalId":369603,"journal":{"name":"Conference Record of the 2000 Twenty-fourth International Power Modulator Symposium","volume":"2006 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131600389","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2000-06-26DOI: 10.1109/MODSYM.2000.896189
R. Cassel, J. deLamare, M. Nguyen, G. Pappas
The Stanford Linear Accelerator utilizes over 250, 5045 klystrons which are at driven by 35 year old modulator utilizing standard PFN capacitors, thyratrons and conventional pulse transformer to generate a 3.5 /spl mu/s pulse of 350 kV, 400 A, at 120 Hz. The proposal is to use a 10 section solid state induction modulator to replace the existing PFN/thyratron modulator, and drive the klystron using the existing conventional pulse transformer. The induction modulator utilizes a pulse transformer similar to an induction accelerator driven by solid state high voltage IGBT switches and DC capacitors. The performance and test results of the IGBT, induction modulator driving a conventional transformer with a 5045 klystron load is discussed.
斯坦福线性加速器利用超过250,5045速调管，由35年历史的调制器驱动，利用标准PFN电容器，闸流管和传统脉冲变压器，产生350 kV, 400 a, 120 Hz的3.5 /spl μ s脉冲。该方案采用10节固态感应调制器取代现有的PFN/闸流管调制器，并采用现有的常规脉冲变压器驱动速调管。该感应调制器利用了一个类似于感应加速器的脉冲变压器，由固态高压IGBT开关和直流电容器驱动。讨论了负载为5045速调管的IGBT感应调制器驱动传统变压器的性能和测试结果。
{"title":"SLAC klystrons modulators","authors":"R. Cassel, J. deLamare, M. Nguyen, G. Pappas","doi":"10.1109/MODSYM.2000.896189","DOIUrl":"https://doi.org/10.1109/MODSYM.2000.896189","url":null,"abstract":"The Stanford Linear Accelerator utilizes over 250, 5045 klystrons which are at driven by 35 year old modulator utilizing standard PFN capacitors, thyratrons and conventional pulse transformer to generate a 3.5 /spl mu/s pulse of 350 kV, 400 A, at 120 Hz. The proposal is to use a 10 section solid state induction modulator to replace the existing PFN/thyratron modulator, and drive the klystron using the existing conventional pulse transformer. The induction modulator utilizes a pulse transformer similar to an induction accelerator driven by solid state high voltage IGBT switches and DC capacitors. The performance and test results of the IGBT, induction modulator driving a conventional transformer with a 5045 klystron load is discussed.","PeriodicalId":369603,"journal":{"name":"Conference Record of the 2000 Twenty-fourth International Power Modulator Symposium","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131122928","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2000-06-26DOI: 10.1109/MODSYM.2000.896172
R. Limpaecher
This paper presents a novel propulsion system concept with numerous advantages. The heart of the concept is a motor drive and control topology we call "pulse frequency modulation (PFM)" The PFM concept is a fundamentally different method of distributing and converting electrical power that is well suited for any motor type and power distribution topology, including permanent magnet motors (PM). Many benefits accrue from using PFM topologies in future ship designs. Three of those benefits are particularly important to reconfigurable electric ship design: (1) very high power density (a minimum factor-of-five increase); (2) very low harmonic distortion (less than one percent); and (3) reconfigurable electric ship compatibility. Compatibility with the reconfigurable electric ship stems from the fact that by using the PFM topology, power system designers have flexibility never before available. With minor hardware variations, the system designer is able to change AC frequencies, to connect AC to DC easily, to convert both AC and DC voltages up or down, to inject out-of-phase harmonics to compensate for slot noise, to provide uninterruptable power, to handle PM motor faults efficiently, to provide full four-quadrant operation, to provide programmable interconnects between the ship's service zones and the propulsion modules, and to level loads throughout the system.
{"title":"Novel converters for electric ship propulsion system and shipboard power distribution","authors":"R. Limpaecher","doi":"10.1109/MODSYM.2000.896172","DOIUrl":"https://doi.org/10.1109/MODSYM.2000.896172","url":null,"abstract":"This paper presents a novel propulsion system concept with numerous advantages. The heart of the concept is a motor drive and control topology we call \"pulse frequency modulation (PFM)\" The PFM concept is a fundamentally different method of distributing and converting electrical power that is well suited for any motor type and power distribution topology, including permanent magnet motors (PM). Many benefits accrue from using PFM topologies in future ship designs. Three of those benefits are particularly important to reconfigurable electric ship design: (1) very high power density (a minimum factor-of-five increase); (2) very low harmonic distortion (less than one percent); and (3) reconfigurable electric ship compatibility. Compatibility with the reconfigurable electric ship stems from the fact that by using the PFM topology, power system designers have flexibility never before available. With minor hardware variations, the system designer is able to change AC frequencies, to connect AC to DC easily, to convert both AC and DC voltages up or down, to inject out-of-phase harmonics to compensate for slot noise, to provide uninterruptable power, to handle PM motor faults efficiently, to provide full four-quadrant operation, to provide programmable interconnects between the ship's service zones and the propulsion modules, and to level loads throughout the system.","PeriodicalId":369603,"journal":{"name":"Conference Record of the 2000 Twenty-fourth International Power Modulator Symposium","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133718053","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2000-06-26DOI: 10.1109/MODSYM.2000.896195
S. Park, S.H. Kim, J. Huang, S. Nam
Total 12 units of high power klystron-modulator systems are under continuous operation in the Pohang Light Source (PLS) linac. The peak powers of the modulator and the klystron are 200 MW and 80 MW, respectively. The klystron output frequency is 2856 MHz. Each klystron output is compressed with a SLED and supplied to four of three-meter long accelerating columns. Final electron energy of PLS linac is 2 GeV. The linac has been operated as a full energy injector for the PLS since December 1994. Annual operation hours of the system is about 6000-hours. Since the commissioning of the PLS linac, the total high voltage run time of an oldest unit among the 12 systems has been accumulated over 50000-hours as of May 2000, and summation of all the units' high voltage run time is approximately 541000 hours. The overall system availability is well over 90%. To enhance the klystron lifetime, a 'cathode backheating' operation mode was adopted from May 1999. In this paper, we review overall system performance of the klystron-modulator systems. The operational status of the klystrons and thyratrons, and the overall system availability statistics for the period of 1994 to May 2000 are also discussed.
{"title":"Operational characteristics of PLS 2-GeV electron linac klystron-modulator system","authors":"S. Park, S.H. Kim, J. Huang, S. Nam","doi":"10.1109/MODSYM.2000.896195","DOIUrl":"https://doi.org/10.1109/MODSYM.2000.896195","url":null,"abstract":"Total 12 units of high power klystron-modulator systems are under continuous operation in the Pohang Light Source (PLS) linac. The peak powers of the modulator and the klystron are 200 MW and 80 MW, respectively. The klystron output frequency is 2856 MHz. Each klystron output is compressed with a SLED and supplied to four of three-meter long accelerating columns. Final electron energy of PLS linac is 2 GeV. The linac has been operated as a full energy injector for the PLS since December 1994. Annual operation hours of the system is about 6000-hours. Since the commissioning of the PLS linac, the total high voltage run time of an oldest unit among the 12 systems has been accumulated over 50000-hours as of May 2000, and summation of all the units' high voltage run time is approximately 541000 hours. The overall system availability is well over 90%. To enhance the klystron lifetime, a 'cathode backheating' operation mode was adopted from May 1999. In this paper, we review overall system performance of the klystron-modulator systems. The operational status of the klystrons and thyratrons, and the overall system availability statistics for the period of 1994 to May 2000 are also discussed.","PeriodicalId":369603,"journal":{"name":"Conference Record of the 2000 Twenty-fourth International Power Modulator Symposium","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124756039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2000-06-26DOI: 10.1109/MODSYM.2000.896197
C. Lazard, A. Bromborsky, D. Conrad, C. Brown, W. Shaheen
Summary form only given as follows. A Reltron system was utilized to support laboratory experiments. The tube required a high voltage input of 200 kV and it had an impedance of approximately 1000 ohms. The unit was required for a low duty cycle application with repetition rates less than 10 hertz. The system consist of a control rack, a power supply, a pulse forming network (PFN), and a Reltron tube. The control rack is required to set and monitor the various filament and heater currents associated with the high voltage switch tube. It is also used to control the high voltage. Finally, it houses all the interlock circuitry. A 5000 watt transformer type power supply is used to charge the PFN to a maximum voltage of 40000 volts. It is capable of driving the unit to maximum repetition rate of 10 hertz. The PFN is a resonant charge system that doubles the power supply voltage and delivers 40000 volts to a step-up transformer. The transformer steps the voltage to 200 kV which drives the Reltron. The paper describes the techniques and procedures used to prepare the system for operation. It also describes the characteristic output of the various subcomponents.
{"title":"Reltron system evaluation","authors":"C. Lazard, A. Bromborsky, D. Conrad, C. Brown, W. Shaheen","doi":"10.1109/MODSYM.2000.896197","DOIUrl":"https://doi.org/10.1109/MODSYM.2000.896197","url":null,"abstract":"Summary form only given as follows. A Reltron system was utilized to support laboratory experiments. The tube required a high voltage input of 200 kV and it had an impedance of approximately 1000 ohms. The unit was required for a low duty cycle application with repetition rates less than 10 hertz. The system consist of a control rack, a power supply, a pulse forming network (PFN), and a Reltron tube. The control rack is required to set and monitor the various filament and heater currents associated with the high voltage switch tube. It is also used to control the high voltage. Finally, it houses all the interlock circuitry. A 5000 watt transformer type power supply is used to charge the PFN to a maximum voltage of 40000 volts. It is capable of driving the unit to maximum repetition rate of 10 hertz. The PFN is a resonant charge system that doubles the power supply voltage and delivers 40000 volts to a step-up transformer. The transformer steps the voltage to 200 kV which drives the Reltron. The paper describes the techniques and procedures used to prepare the system for operation. It also describes the characteristic output of the various subcomponents.","PeriodicalId":369603,"journal":{"name":"Conference Record of the 2000 Twenty-fourth International Power Modulator Symposium","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129613237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2000-06-26DOI: 10.1109/MODSYM.2000.896205
A. Krasnykh, R. Akre, S. Gold, R. Koontz
This paper describes a solid state Marx type modulator design delivering an 11 kilovolt, 2-4 /spl mu/sec pulse to the cathode of an X-band driver TWT. Insulated gate bipolar transistors (IGBTs) are used as on/off switches to operate the Marx circuit in the energy storage capacitor partial discharge mode. With the aid of a passive compensation circuit, a very flat TWT cathode driver pulse is obtained. The 2 /spl mu/sec, 11 kV pulse amplitude is flat to 0.06%.
{"title":"A solid state Marx type modulator for driving a TWT","authors":"A. Krasnykh, R. Akre, S. Gold, R. Koontz","doi":"10.1109/MODSYM.2000.896205","DOIUrl":"https://doi.org/10.1109/MODSYM.2000.896205","url":null,"abstract":"This paper describes a solid state Marx type modulator design delivering an 11 kilovolt, 2-4 /spl mu/sec pulse to the cathode of an X-band driver TWT. Insulated gate bipolar transistors (IGBTs) are used as on/off switches to operate the Marx circuit in the energy storage capacitor partial discharge mode. With the aid of a passive compensation circuit, a very flat TWT cathode driver pulse is obtained. The 2 /spl mu/sec, 11 kV pulse amplitude is flat to 0.06%.","PeriodicalId":369603,"journal":{"name":"Conference Record of the 2000 Twenty-fourth International Power Modulator Symposium","volume":"976 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116199696","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2000-06-26DOI: 10.1109/MODSYM.2000.896158
G. Bees, B. Huhn, A. Tydeman
Traditional magnetron pulsers have mainly been based on energy storage PFNs and discharge switches. With advances in semiconductor switch technology the direct drive pulser is emerging to challenge the PFN approach. This paper describes a high voltage, high power switchmode supply designed for charging a large storage capacitor in a direct magnetron pulser, which is employed in a medical therapy application. The demands of the load system and the design of the power supply required to produce full rated power at both 65 kV and 43 kV are described.
{"title":"A 65 kV 15 kW switchmode power supply for a direct switched magnetron pulser","authors":"G. Bees, B. Huhn, A. Tydeman","doi":"10.1109/MODSYM.2000.896158","DOIUrl":"https://doi.org/10.1109/MODSYM.2000.896158","url":null,"abstract":"Traditional magnetron pulsers have mainly been based on energy storage PFNs and discharge switches. With advances in semiconductor switch technology the direct drive pulser is emerging to challenge the PFN approach. This paper describes a high voltage, high power switchmode supply designed for charging a large storage capacitor in a direct magnetron pulser, which is employed in a medical therapy application. The demands of the load system and the design of the power supply required to produce full rated power at both 65 kV and 43 kV are described.","PeriodicalId":369603,"journal":{"name":"Conference Record of the 2000 Twenty-fourth International Power Modulator Symposium","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2000-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116658699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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