共 11 条
[11]
YAO Q, 1993, 28 IEEE IAS ANN M, P1122
Analysis of current controllers for voltage-source inverter
被引：87
作者：
Rahman, MA
Radwan, TS
Osheiba, AM
Lashine, AE
机构：
[1] Faculty of Engineering and Applied Science, Memorial University of Newfoundland, St. John's
关键词：
comparators;
controllers;
hysteresis;
inverters;
ramp;
voltage source;
D O I：
10.1109/41.605621
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Current-controlled pulsewidth modulated (PWM) inverters are widely used in high-performance ac drives because they give high dynamic responses in such systems. This paper presents a comparative study of several current controllers. Particular attention is paid to the hysteresis controller and the ramp-comparator controller, due to their simplicity and widespread use. An improved ramp comparator is proposed in which the current error signals are compared to three 120 degrees phase-shifted triangular waveforms. This eliminates the zero voltage vector applied to the inverter and reduces the inherent amplitude and phase errors. Computer simulations are used to compare the performances. Fast Fourier transform technique is used to show the power spectrum of the current waveforms. Experimental results validate the simulated performances.
引用
收藏
页码：477 / 485
页数：9
相关论文