The result analysis of the power loss 3-phase induction motor with PWM inverter supply

2005 International Power Engineering Conference Pub Date : 1900-01-01 DOI:10.1109/IPEC.2005.207024

C. Thammarat, S. Tadsuan, B. Suechoey, S. Bunjongjit

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引用次数: 16

Abstract

The purpose of this research is to study the power loss generating of the PWM inverter and the 1 HP 380 V 3-phase squirrel cage induction motor. The test procedure was performed by varying fundamental frequency in the range 25-50 Hz and at constant 1.5 kHz - PWM inverter switching frequency, as a source to the 3-phase 380 V squirrel cage induction motor in star connection with 5.1 N.m constant torque load. The test analysis was to record the input/output voltage/current waveforms by using YOKOGAWA DL1640 storage oscilloscope. Then, using the function FFT program was to determine the variety parameters at each harmonic from those waveforms. The total power loss and efficiency a were calculated by those parameters. The results show the input power is minimum at 25 Hz fundamental frequency and maximum at 50 Hz. But the efficiency is minimum at 25 Hz fundamental frequency and maximum at 50 Hz. The minimum motor power loss is at 35-40 Hz fundamental frequency and the maximum inverter power loss at 81-85% efficiency is around 25-50 Hz fundamental frequency. And also, this is the useful information in designed inverter process to extend the motor' life due to the overheat from power loss

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采用PWM逆变电源的三相异步电动机的功率损耗结果分析

本研究的目的是研究PWM逆变器与1 HP 380v三相鼠笼感应电动机的功率损耗产生。测试过程是通过在25-50 Hz范围内改变基频和恒定的1.5 kHz - PWM逆变器开关频率来完成的，作为3相380 V鼠笼式感应电动机的星形连接源，具有5.1 N.m的恒转矩负载。测试分析采用YOKOGAWA DL1640存储示波器记录输入/输出电压/电流波形。然后，利用函数FFT程序从这些波形中确定每个谐波处的变化参数。利用这些参数计算了总功率损耗和效率a。结果表明，输入功率在基频25 Hz时最小，在基频50 Hz时最大。但效率在25赫兹基频时最低，在50赫兹时最高。最小电机功率损耗在35-40 Hz基频，最大逆变器功率损耗在81-85%效率约25-50 Hz基频。同时，这也是在设计变频器过程中延长电机因功率损耗而产生的过热寿命的有用信息

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2005 International Power Engineering Conference

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