Losses in three-phase induction machines fed by PWM converter

被引：45
作者：
Hildebrand, EN [1 ]
Roehrdanz, H [1 ]
机构：
[1] Tech Univ Dresden, Elektrotech Inst, D-01062 Dresden, Germany
来源：
IEEE TRANSACTIONS ON ENERGY CONVERSION | 2001年 / 16卷 / 03期
关键词：
Eddy-current feedback; equivalent circuit; harmonic losses; induction machine; PWM converter;
D O I：
10.1109/60.937201
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The paper deals with the analysis and evaluation of test results of PWM converter-fed induction motors. The test results presented point out the dependency of the harmonic losses on the pulse frequency. The measured values were obtained by means of a novel high precision power-analyzer capable to measure the harmonics of voltage, current and power. Following a detailed investigation regarding the sources of the harmonic losses the paper describes new methods for determining the harmonic losses by both calculation and measurement. The calculation is based on a new equivalent circuit comprising specific impedances for imaging the eddy-current circuits within the iron core derived from the fundamental equations of the three-phase asynchronous machine. These impedances permit the calculation of the harmonic iron losses under the influence of the eddy-currents in all sections of the magnetic circuit caused by the harmonics. Measured and calculated losses were found to correspond satisfactorily for the various voltage harmonics.
引用
收藏
页码：228 / 233
页数：6
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