| 防止PWM逆变器直通短路的原理及应用 |
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| 引用本文： | 贾正春,许锦兴,冯泽华.防止PWM逆变器直通短路的原理及应用[J].华中科技大学学报(自然科学版),1992(5). |
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| 作者姓名： | 贾正春 许锦兴 冯泽华 |
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| 作者单位： | 华中理工大学电力工程系
(贾正春，许锦兴)，华中理工大学电力工程系(冯泽华) |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 本文提出了通过上下桥臂开关电流互访与联锁、故障断诊、故障处理与记忆等措施,消除PWM逆变器上下桥臂同时直通短路的新原理,并提供了实验验证的结果.
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| 关 键 词： | PWM逆变器 直通短路 电流信息互锁 故障诊断 |
Protection against Short-Circuit between the Upper and Lower Switches of Each Leg in Inverters |
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| Jia Zhengchun Xu Jinxing Feng Zhehua.Protection against Short-Circuit between the Upper and Lower Switches of Each Leg in Inverters[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,1992(5). |
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| Authors: | Jia Zhengchun Xu Jinxing Feng Zhehua |
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| Institution: | Jia Zhengchun Xu Jinxing Feng Zhehua |
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| Abstract: | By measuring the currents in the upper and lower switches of the same leg in invertens, a new method of protecting against short-circuit in the leg is proposed. The interlock between the upper and lower switches and fault diagnosis can be performed automatically by hardware in each switching command. If a fault appears, the fault message will be latched for display and to disable the inverters in order to avoid very large overcurrent which could damage power transistors. Test results show that the method proposed can greatly improve the reliability of inverters. |
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| Keywords: | PWM inverters short-circuit in each leg fault diagnosis in- terlock by current message |
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