Supply Induced Interharmonic Effects in Wound Rotor and Doubly-Fed Induction Generators

被引:32
作者
Djurovic, S. [1 ]
Vilchis-Rodriguez, D. S. [1 ]
Smith, A. C. [1 ]
机构
[1] Univ Manchester, Power Convers Grp, Manchester M13 9PL, Lancs, England
基金
英国工程与自然科学研究理事会;
关键词
Current spectrum; doubly-fed induction generator (DFIG); harmonic emissions; pulsating torque; supply harmonics; vibration spectrum; wind power generation; HARMONIC-ANALYSIS; MOTORS; EMISSIONS; MODEL; DFIG;
D O I
10.1109/TEC.2015.2427295
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
This paper investigates the spectral effects that stator supply harmonics can induce in wound rotor and doubly-fed induction generators. The purpose of this study is to clarify the nature and the origin of the reported significant inter harmonic effects in these machines. To this end, the authors derive analytical expressions that define the spectral signature frequencies of individual supply harmonics in the current and torque signals. The expressions are first validated through comparison with the spectra calculated using a harmonic time-stepped machine model and then by spectral measurements on a laboratory test rig comprising a 30 kW machine excited by a programmable power supply unit. It is shown that the presence of supply harmonics can result in multiple and variable wide-band interharmonic effects in the current and torque signals. Finally, the interharmonic current emissions for the wound rotor and the doubly-fed mode of operation are experimentally quantified using the relevant IEC standard indices.
引用
收藏
页码:1397 / 1408
页数:12
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