| Analysis of Capacitive Parasitism in PWM Inverter—Fed Motor |
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| 引用本文： | YANGXi－jun CAOYi－long 等.Analysis of Capacitive Parasitism in PWM Inverter—Fed Motor[J].上海大学学报(英文版),2001,5(1):60-65. |
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| 作者姓名： | YANGXi－jun CAOYi－long |
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| 作者单位： | SchoolofElectromechanicalEnginneringandAutonation,ShanghaiUniversity,Shanghai200072,China |
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| 摘 要： | The effects of parasitic capacitance in induction motor system are unnoticed when it is fed from the AC line,but they are obvious when supplied directly from a PWM inverter,Consequently,many parasitic problems occur.Such as motor-to-earth leakage current.Bearing current.incoming line current distortion and uneven distribution of electrical stresses along the winding.On the basis of the uniform transmission line principle.a complete equivalent circuit of the PWM inverter-fed motor system is presented,based on which all the capacitive parasitic problems mentioned obove are analyzed and simulated by means of PSPICE.All the results are consistent with the existing ones.
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| 关 键 词： | 感应电动机 寄生电容分析 电动机接地电流 漏磁损失 |
| 收稿时间： | 18 April 2000 |
Analysis of capacitive parasitism in PWM inverter-fed motor |
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| Xi-jun Yang Ph. D. Candidate,Yi-long Cao,You-min Gong.Analysis of capacitive parasitism in PWM inverter-fed motor[J].Journal of Shanghai University(English Edition),2001,5(1):60-65. |
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| Authors: | Xi-jun Yang Ph D Candidate Yi-long Cao You-min Gong |
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| Institution: | School of Electromechanical Engineering and Automation. Shanghai University. |
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| Abstract: | The effects of parasitic capacitance in induction motor system are unnoticed when it is fed from the AC line, but they are obvious when supplied directly from a PWM inverter. Consequently, many parasitic problems occur, such as motor to earth leakage current, bearing current, incoming line current distortion and uneven distribution of electrical stresses along the winding. On the basis of the uniform transmission line principle, a complete equivalent circuit of the PWM inverter fed motor system is presented, based on which all the capacitive parasitic problems mentioned above are analyzed and simulated by means of PSPICE. All the results are consistent with the existing ones. |
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| Keywords: | inverter fed motor capacitive parasitism motor to earth leakage current bearing current input current distortion winding electrical stress |
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