电工技术学报2012，Vol.27Issue(7)：101-108,8.
PWM激励下异步电机铁耗等值电阻模型
Model of Equivalent Iron Loss Resistance of Induction Motor Fed by PWM
摘要
Abstract
Model of equivalent iron loss resistance of induction motor（IM） fed by PWM is established which could consider the motor＇s operation condition and PWM waveform property by analyzing characteristic of iron loss variation. Based on iron loss separation model, three resistances are used to represent each component of the total iron loss which consists of hysteresis, classical loss and excess loss and then the expressions for these resistance under sinusoidal excitation are deduced. These expressions are modified by analyzing relationship of iron loss of IM under sinusoidal and PWM excitation, and then the model of iron loss resistance under PWM excitation is built. An experiment scheme is proposed to determining the parameters of the model. Each resistance in the model varies with the motor＇s operating frequency and modulation index of PWM waveform in different manners, and calculation accuracy of iron loss is improved. Correctness and validity of the proposed model is verified by the simulation and the experiment results.关键词
铁耗/PWM/等值电阻/异步电机/铁耗分离模型Key words
Iron loss/PWM/equivalent resistance/induction motor/iron loss separation model分类
信息技术与安全科学引用本文复制引用
罗富强,夏长亮,乔照威,王慧敏,宋战锋..PWM激励下异步电机铁耗等值电阻模型[J].电工技术学报,2012,27(7):101-108,8.基金项目
国家杰出青年科学基金 （）
国家自然科学基金 （）
天津市科技支撑计划（10ZCKFGX02300,11ZCKFGX03300）重点资助项目 （）
