Estimation and Reduction of Motor Input Surge Voltage Using Frequency Response Analysis |
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| Authors: | Toru Wakimoto Yoshimitsu Takahashi Norihito Kimura Yukitoshi Narumi Naoki Hayakawa |
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| Affiliation: | 1. Nippon Soken Inc., Japan;2. DENSO Corp., Japan;3. Nagoya University, Japan |
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| Abstract: | This paper presents a plain method of calculating the voltage waveform at motor input terminals from the inverter output terminal voltage and also a method of reducing the voltage. The voltage waveform at the motor input terminals is obtained by a frequency domain calculation using the transfer function of the cable and the frequency characteristics of the voltage waveform at the inverter output terminals. The analysis using this method clarifies the mechanism of the rise of the maximum voltage at the motor input terminals, that is, ringing at the motor input terminals, which occurs at specific frequencies at which the transfer gain increases, causing the rise of the maximum voltage. Therefore, to decrease the maximum voltage at the motor input terminals, it is effective to shorten the cable length or cancel the ringing voltage by preswitching. © 2013 Wiley Periodicals, Inc. Electr Eng Jpn, 186(4): 11–19, 2014; Published online in Wiley Online Library ( wileyonlinelibrary.com ). DOI 10.1002/eej.22482 |
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| Keywords: | inverter cable surge voltage frequency response fast Fourier transform |
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