| 基于传输线理论电缆特性变化对负载影响的研究 |
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| 引用本文： | 万健如,禹华军,刘洪池,刘春江.基于传输线理论电缆特性变化对负载影响的研究[J].天津大学学报(英文版),2002,8(2):93-98. |
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| 作者姓名： | 万健如 禹华军 刘洪池 刘春江 |
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| 作者单位： | 天津大学电气自动化与能源工程学院,天津，300072 |
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| 基金项目： | TianjinNaturalScienceFoundation(No .0 1 360 2 71 1 ) |
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| 摘 要： | 基于长线传输理论 ,研究变频调速系统中电机端过电压的产生机理 ,分析电缆长度和特性阻抗变化对过电压的影响 .并根据阻抗匹配原则 ,设计一套安装在电机端的阻抗匹配网络 ,经实验证明能有效地抑制电机端过电压
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| 关 键 词： | 过电压 长线传输 PWM变频器 阻抗匹配 |
Effects of Cable Characters on the Load Using the Transmission Theory |
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| WAN Jian-ru,YU Hua-jun,LIU Hong-chi,LIU Chun-jiang.Effects of Cable Characters on the Load Using the Transmission Theory[J].Transactions of Tianjin University,2002,8(2):93-98. |
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| Authors: | WAN Jian-ru YU Hua-jun LIU Hong-chi LIU Chun-jiang |
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| Abstract: | Based on the transmission theory, the mechanism of the generation of the motor terminal over voltage caused by the long line transmission of PWM pulses in the PWM variable frequency driving system is studied. This paper focuses on the effects of the variant length and characteristic impedance of cables on the over voltage by large numbers of experiment results. In terms of the impedance matching method, a network fixed at motor terminal is designed to reduce the over voltage. The utility of this network is testified by the experiments. |
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| Keywords: | over voltage long line transmission PWM transducer impedance matching |
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