Synchronous Optimal Pulsewidth Modulation for Low-Switching-Frequency Control of Medium-Voltage Multilevel Inverters
Synchronous Optimal Pulsewidth Modulation for Low-Switching-Frequency Control of Medium-Voltage Multilevel Inverters
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DOI：
10.1109/tie.2010.2047824
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发表时间：
2010-04
影响因子：
7.7
通讯作者：
A. Rathore;J. Holtz;T. Boller
中科院分区：
文献类型：
--
作者：
A. Rathore;J. Holtz;T. Boller
本文介绍了利用多电平逆变器在低开关频率下控制中压感应电动机驱动的同步最优脉宽调制（PWM）产生的机理和细节。多电平逆变器允许在直流电压的倍数下工作，并降低总谐波失真。同步最优PWM控制允许将最大开关频率设置为低值而不影响THD。低开关频率降低了功率半导体器件的开关损耗。详细说明了最优控制过程。比较了三电平和五电平逆变器拓扑结构的性能。给出了一种采用最优PWM控制的五电平逆变驱动器的实验结果。
This paper presents the mechanism and details of synchronous optimal pulsewidth modulation (PWM) generation for control of medium-voltage induction motor drives using multilevel inverters at low switching frequency. Multilevel inverters allow operation at multiple of dc-link voltage and reduce the total harmonic distortion (THD). Synchronous optimal PWM control permits setting the maximum switching frequency to a low value without compromising THD. Low switching frequency reduces the switching losses of the power semiconductor devices. An optimal control procedure is explained in detail. The performances of three- and five-level inverter topologies are compared. The experimental results of a five-level inverter drive using optimal PWM control are presented.