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Development of a 300 kV/3 kHz nanosecond pulse generator using semiconductor opening switches
Yu-Hao Chen1, Jie Yang1, Yan-Zhao Xie1
1State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China.
The Review of Scientific Instruments
|January 2, 2025
Summary
This study developed a high-voltage nanosecond pulse generator using semiconductor opening switches (SOS). The device achieves 300 kV output at a 3 kHz repetition rate for advanced applications.
Area of Science:
- Electrical Engineering
- Pulsed Power Systems
- Materials Science
Background:
- High-voltage pulse generation is critical for various scientific and industrial applications.
- Existing systems often face limitations in achieving high repetitive frequencies and precise pulse shaping.
- Semiconductor Opening Switches (SOS) offer potential for compact and efficient high-power switching.
Purpose of the Study:
- To develop a nanosecond pulse generator capable of high voltage and high repetitive frequency operation.
- To investigate the performance and limitations of SOS in a high-repetition-rate pulse generator.
- To optimize the pulse compression and switching stages for efficient energy transfer.
Main Methods:
- Design and implementation of a multi-stage pulse generator including charging, magnetic pulse compression, and SOS switching units.
- Utilizing a rectifying resonant charging and energy recovery circuit for stable high-frequency operation.
- Employing a three-stage magnetic pulse compression to shorten pulse width to nanosecond levels.
- Configuring multiple SOS switches in series to achieve high output voltages.
Main Results:
- The developed pulse generator successfully achieved a 300 kV output voltage.
- The system operated stably at a 3 kHz repetitive frequency into a 2 kΩ load.
- Pulse width was compressed from microseconds to tens of nanoseconds.
- Comprehensive analysis of influencing factors through simulation and measurement was performed.
Conclusions:
- The developed nanosecond pulse generator utilizing SOS is effective for high-voltage, high-repetition-rate applications.
- The integrated design of charging, magnetic compression, and SOS switching enables efficient pulse generation.
- Further characterization and optimization can enhance performance for specific pulsed power requirements.
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