| 引用本文: | 石经纬,巩春志,张可心,田修波,杨士勤.基于同步信号的多路延时IGBT驱动电路设计[J].电力自动化设备,2012,32(1): |
| SHI Jingwei,GONG Chunzhi,ZHANG Kexin,TIAN Xiubo,YANG Shiqin.Design of multi-channel time-delayed IGBT driving circuit based on synchronous signals[J].Electric Power Automation Equipment,2012,32(1): |
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| 摘要: |
| 基于同步信号设计了一种可实现相互之间高压隔离的IGBT多路延时驱动电路系统，并应用到Marx电路中，实现了可柔性调节的阶梯型脉冲高压输出。试验结果表明，延时驱动电路可实现最大30μs的延时，且具有IGBT驱动电压欠压保护、自给反向栅压等功能，同时场效应管的存在抑制了栅射极电压振荡。驱动信号高压隔离变压器为单原边多副边结构，简单紧凑，通过副边数目的增减，可驱动不同级数的Marx电路，具有扩展性好的优点。过流保护电路反应速度快，IGBT关断可靠，可在2μs之内抑制短路电流继续上升。该驱动电路应用于10级的Marx电路中，实现了峰值电压10 kV，脉冲宽度30μs，最大电压阶数10阶的脉冲高压输出。 |
| 关键词: 延时 驱动电路 Marx电路 阶梯型脉冲 欠压保护 IGBT 场效应管 |
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| 基金项目:国家自然科学基金资助项目（50773015，10975041） |
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| Design of multi-channel time-delayed IGBT driving circuit based on synchronous signals |
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SHI Jingwei, GONG Chunzhi, ZHANG Kexin, TIAN Xiubo, YANG Shiqin
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State Key Laboratory of Advanced Welding Production Technology，Harbin Institute of Technology，Harbin 150001，China
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| Abstract: |
| A multi-channel time-delayed IGBT（Insulated Gate Bipolar Transistor） driving circuit system is designed based on synchronous signals，which is applied to Marx circuit for outputting soft-adjustable discrete-step high-voltage pulse. The high-voltage channels are isolated from each other. Experimental results show that，the driving circuit has the maximum time delay of 30μs. It has under-voltage protection，and provides minus-voltage pulses to gate and applies MOSFET to inhibit the gate-emitter voltage oscillation. The high-voltage isolation transformer of driving signal has a compact structure of single primary winding and multiple secondary windings to drive multi-stage Marx circuit with good expandability. Its over-current protection has fast response，which turns IGBT off reliably to suppress the short-circuit current within 2μs. It is applied in the ten-stage Marx circuit to output 10 kV-30μs pulse with up to ten steps. |
| Key words: time delay driving circuit Marx circuit discrete-step pulse under-voltage protection insulated gate bipolar transistors MOSFETs |
