Probabilistic voltage harmonic analysis of direct torque controlled induction motor drives

被引：13
|
作者：
Kaboli, Shahriyar [1 ]
Vahdati-Khajeh, Esmaeel [1 ]
Zolghadri, Mohammad Reza [1 ]
机构：
[1] Sharif Univ Technol, Sch Elect Engn, Tehran 113659363, Iran
来源：
IEEE TRANSACTIONS ON POWER ELECTRONICS | 2006年 / 21卷 / 04期
关键词：
autocorrelation function; direct torque control (DTC); induction motor drive; power spectral density; random process; voltage harmonics;
D O I：
10.1109/TPEL.2006.876838
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In high frequency motor-drives such as direct torque controlled (DTC) induction motor drives, the motor harmonic loss, and electromagnetic interference are largely affected by the spectrum of the motor input voltage. Nonlinear elements in the control loop of DTC drive make harmonic analysis of the drive very complex compared to classical pulsewidth modulated controlled drives. In this paper, a probabilistic method to study the harmonic contents of voltage in DTC of induction motors is presented. The DTC voltage chain is simulated with a random process. Then, the autocorrelation function of voltage vectors is calculated and its power spectrum density is obtained. The effect of flux and torque hysteresis controller bands, machine parameters, and inverter dc-link voltage on the motor voltage spectrum is investigated. Major harmonics in the DTC voltage spectrum are specified and their behaviors are described. Simulation and experimental results are presented to justify the theoretical analysis.
引用
收藏
页码：1041 / 1052
页数：12
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