Design of 1.5 kW-Level Anode Power Supply for Magnetic Focusing Hall Thruster
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摘要:
介绍了1.5 kW级磁聚焦霍尔推力器阳极电源的设计，针对电源输入输出电压宽范围、高升压比的特点，设计了变压器原边并联，副边串联的双变压器结构；为了提高效率，分析了滞后臂实现软开关的实现条件；为了抑制整流二极管反向恢复的电压尖峰，变压器原边使用了两个钳位二极管且在变压器副边采用了CDD无损吸收电路。针对霍尔推力器负载特点，设计了双零点三极点补偿器，提高了电源的动态和稳态特性。最后，给出了产品实物及滤波单元原理并验证了方案的合理性。
Abstract:In this paper，according to features of the wide range and high step-up ratio，a topology of parallel primary and serial secondary is developed for 1.5 kW-level anode power supply of magnetic focusing Hall thruster. In order to improve the efficiency，the condition of phase shifted lag bridge soft switch is analyzed. To restrain the backward recovery voltage spike of the rectifier diode，two clamping diodes in primary and CDD Lossless absorption in secondary are designed. In addition，according to the load feature of Hall thruster，a controller of double-zero and three-pole is designed to improve the dynamics and stability of the power. At last，the rationality of the design is verified by tests. It will provide strong support for future engineering applications.
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Key words:
- 1.5 kW/
- magnetic focusing Hall/
- power processing unit/
- anode power supply/
- FU
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