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A solid-state pulse generator based on multilayer ceramic capacitors and insulated gate bipolar transistors
Li-Min Wang1, Zheng-Quan Zhang1, Qing-Xiang Liu1
1School of Physical Science and Technology, Southwest Jiaotong University, Chengdu 610031, China.
The Review of Scientific Instruments
|June 4, 2020
Summary
A novel solid-state pulse generator utilizing multilayer ceramic capacitors and an insulated gate bipolar transistor switch was developed. This compact, high-performance device offers a fast rise time and extended operational lifetime for advanced pulsed power applications.
Area of Science:
- Electrical Engineering
- Pulsed Power Systems
- Materials Science
Background:
- Solid-state pulse generators are crucial for various applications requiring precise high-voltage pulses.
- Existing technologies often face limitations in size, rise time, or operational lifespan.
Purpose of the Study:
- To design and fabricate a compact, high-performance solid-state pulse generator.
- To achieve a fast rise time and long operational lifetime using advanced components and design techniques.
Main Methods:
- Designed a pulse-forming network (PFN) module using multilayer ceramic capacitors (MLCCs).
- Fabricated an all-solid-state pulse generator with a Blumlein line, IGBT switch array, and optimized interstage inductors on PCBs.
- Incorporated an IGBT gate-boosting circuit and magnetic switch technology for fast waveform generation.
Main Results:
- Achieved a square-wave pulse with 5 kV voltage, 120 ns width, and 27 ns rise time.
- Demonstrated a maximum repetition rate of 100 Hz and an evaluated lifetime of 10^9 pulses on a 6.6 Ω load.
- The generator exhibited a compact structure with reduced interstage inductor coupling.
Conclusions:
- The developed solid-state pulse generator offers a unique combination of compact size, fast rise time, and long lifetime.
- This device is suitable for integration into linear transformer drivers or Marx generators.
- The use of MLCCs and optimized design contributes to enhanced performance and reliability.
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