PWM逆变器供电下电机铁心损耗的解析计算.PDF

27 卷 12 期 中 国 电 机 工 程 学 报 Vol.27 No.12 Apr. 2007 2007 年4 月 Proceedings of the CSEE 2007 Chin.Soc.for Elec.Eng. 文章编号：0258-8013 (2007) 12-0019-05 中图分类号：TM351 文献标识码：A 学科分类号：47040 PWM 逆变器供电下电机铁心损耗的解析计算 黄平林,胡虔生,崔 杨,黄允凯 ( 东南大学电气工程系, 江苏省 南京市 210096) Analytical Calculation of the Iron Losses of Electric Machine Fed by PWM Inverter HUANG Ping-lin, HU Qian-sheng, CUI Yang, HUANG Yun-kai (Electrical Engineering Dept. of Southeast University, Nanji ng 210096, Jiangsu Province,China) ABSTRACT: Based on the Bertotti iron loss separate 机工频正弦供电条件发生改变，以往的铁耗估算方 model,a calculation model of iron losses of electric magnetic [4-5] 法往往不再适用 ，探讨高频、 正弦条件下电机 material fed by PWM inverter is proposed using the Bessel 铁耗的精确计算方法显得尤为重要。特别是随着电 function, considering the influence of the inverter parameter, 力电子技术的发展以及大功率器件的广泛使用，越 the numerical relationship of material loss between sinusoidal 来越多的电机采用逆变器进行供电，以实现对电机 voltage supply and PWM voltage supply is presented, it [6-7] 的各种复杂控制 ，PWM(pulse width modulation) provides a new theory of the study on electric material. By 变频器就是应用得较为广泛的一种逆变器，而且大 improving on the Epstein frame measuring system, a method is proposed to measure the material loss under non-sinusoidal 多高速电机也是通过PWM 变频技术来 动。在这 voltage, experimental results agree with the results computed 种高频、 正弦供电方式下，电源频率很高，可达 well. Finally, two three-phase experimental induction machines 几百赫兹到几千赫兹，电源波形不再是正弦波，电