| 基于交流电机负载双向晶闸管关断电压暂态研究及缓冲电路参数优化 |
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| 引用本文： | 王榕生.基于交流电机负载双向晶闸管关断电压暂态研究及缓冲电路参数优化[J].福州大学学报(自然科学版),2007,35(2):234-240. |
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| 作者姓名： | 王榕生 |
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| 作者单位： | 福州大学电气工程与自动化学院,福建,福州,350002 |
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| 摘 要： | 研究了以三相交流电动机为负载的双向晶闸管关断电压的暂态过程.采用综合矢量法建立关断过程的非对称系统暂态数学模型,求解结果揭示了双向晶闸管关断电压峰值及其dU/dt随RC缓冲电路元件参数的变化规律.该规律表明:缓冲电阻R存在最佳取值,它使dU/dt达到极小值,从而为合理设计缓冲电路提供了理论依据.
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| 关 键 词： | 交流电机 双向晶闸管 关断电压 缓冲电路 非对称系统 综合矢量 |
| 文章编号： | 1000-2243(2007)02-0234-07 |
| 修稿时间： | 2006年6月16日 |
A study of transient state on triac off-state voltage and optimization of parameters of snubber circuit for 3-phase induction motors switching application |
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| WANG Rong-sheng.A study of transient state on triac off-state voltage and optimization of parameters of snubber circuit for 3-phase induction motors switching application[J].Journal of Fuzhou University(Natural Science Edition),2007,35(2):234-240. |
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| Authors: | WANG Rong-sheng |
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| Institution: | WANG Rong-sheng(College of Electrical Engineering and Automation,Fuzhou University,Fuzhou,Fujian 350002,China) |
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| Abstract: | Investigates the process of transient state on the triac off-state voltage for a 3-phase induction motor switching.With the modeling of the synthetic vector,a transient mathematical model of the asymmetrical system on the triac off-state is established.Studying results reveal characteristics of the triac off-state peak voltage and its dU/dt value varying with the RC snubber circuit parameters,showing that an optimal snubber resistance exists to minimize the dU/dt value.Thus,the study provides a theoretic basis for optimizing the snubber circuit design. |
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| Keywords: | 3-phase induction motor triac off-state voltage snubber circuit asymmetrical system synthetic vector |
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