| 基于电流信号的桥式逆变电路中互锁保护电路的设计 |
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| 引用本文： | 徐小燕.基于电流信号的桥式逆变电路中互锁保护电路的设计[J].科学技术与工程,2010,10(1). |
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| 作者姓名： | 徐小燕 |
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| 作者单位： | 南京农业大学工学院,南京,210031 |
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| 摘 要： | 介绍了全桥逆变电路的工作方式。讨论分析了绝缘栅双极晶体管IGBT(Insulated-Gate Bipolar Transistor)在实际无源逆变电路中可能存在的直通现象,提出了除用软件实现死区和延时之外的解决方法。通过电流传感器和组合逻辑电路实现桥臂上IGBT的互锁功能,在硬件上实现防直通的策略。给出了详细的电路,对正常工作和短路故障时的原理进行了分析。该设计弥补了软件方法的不稳定性,提高了电路的可靠性和安全性。
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| 关 键 词： | 无源逆变 IGBT 互锁 保护电路 |
| 收稿时间： | 9/23/2009 9:45:55 AM |
| 修稿时间： | 10/2/2009 9:44:39 PM |
Design of interlock protection circuits in bridge type passive inverter circuit which basic on current signal |
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| xu xiaoyan.Design of interlock protection circuits in bridge type passive inverter circuit which basic on current signal[J].Science Technology and Engineering,2010,10(1). |
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| Authors: | xu xiaoyan |
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| Institution: | College of Engineering/a>;Nanjing Agricultural University/a>;Nanjing 210031/a>;P.R.China |
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| Abstract: | The working mode of full bridge inverter circuit is introduced.After discussing the disadvantage of short-through of IGBT(Insulated-Gate Bipolar Transistor)in actual passive inverter circuit,beside the solution of dead-zone and delay in hardware,a new methord was offered.It totally realized the founction of interlock by current sensor and logic circuits,to achieve the method of anti-short-through.Detailed circuit,analysis of normal operation and short trouble are given.The design compensats for the instabil... |
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| Keywords: | passive inverter IGBT interlock protection circuit |
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