High Rep-rate Fast Pulsed Power Modulator Using Static Induction Thyristors

利用具有快速通断能力的高压静电感应晶闸管，制作了高重复速率脉冲功率调制器，并对其进行了测试，获得了实现感应同步加速器的基本特性。通过2年的研究，得到如下结果：1。设计制作了一种感应储能型栅极驱动器，特别适用于硅晶闸管的关断动作。采用快速功率mosfet作为导通开关，保持电压为3kv的硅晶闸管作为关断开关，制成了电感储能脉冲功率调制器。在第一年的研究中，在负载电阻加速电压为15 V，复位电压为100 V，重复速率为100 pps的情况下，获得了以下实验结果。第二年，在虚负载为50 Ω，空芯电感为2.6 μH的条件下，在加速电压为250 V，脉宽为900 ns的条件下，获得了峰值复位电压1500V，频宽为120 ns的峰值复位电压。根据所测的开关损耗，可预期最大复速率为588 kpps。3 .使用功率MOSFET作为开关元件的脉冲功率调制器，其复位电压为1 kV，再现率为1 mpps，工作速度快。使用Finemet的磁芯，评估了磁芯损耗等脉冲特性，然后研究了冷却方法。为了提高工作频率，研制了一种额定电流可达50a的SI晶闸管。

Using high-voltage static induction (SI) thyristors with fast ON-OFF capability, a high rep-rate pulsed power modulator was made and tested to obtain fundamental characteristics for realizing an induction synchrotron Pulse response of magnetic core bas been also investigated.Following results have been obtained through the research of 2 year.1. An inductive-energy-storage type gate driver was designed and made, which is especially suitable for turn-OFF action of SI thyristors.2. Using fast power MOSFETs as turn-ON switches and an SI thyristor with a holding voltage of 3 kV as a turn-OFF switch, an inductive-energy-storage pulsed power modulator was made. In the first year of research, the following experimental results were obtained without a load resistor accelerating voltage of 15 V, reset voltage of l00 V, rep-rate of 100 pps. In the second year, using a dummy load of 50 Ω and an air-core inductor of 2.6 μH, a peak reset voltage of 1500V with FWHM of 120 ns has been obtained for an accelerating voltage of 250 V with a pulse width of 900 ns. From the measured switching loss, maximum rep-rate of 588 kpps could be expected.3. A pulsed power modulator, which is using a power MOSFET as a switching element, has shown fast operation with a reset voltage of 1 kV and a rep-rate of 1 Mpps.4. Using a magnetic core of Finemet, pulse characteristics such as core losses were evaluated and then investigated the method of cooling.5. In order to increase the operating frequency, an SI thyristor with rated current of up to 50 A has been developed.