New PWM method for single-phase three-level PWM rectifiers

Joong-Ho Song, Sungjoon Cho, I. Choy, Ju-Yeop Choi
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引用次数: 21

Abstract

This paper presents a simple switching method to generate a PWM pattern mostly relevant to single-phase three-level PWM rectifiers. The adopted PWM switching pattern is performed in a manner similar to the space vector PWM method, which is popularly used in three-phase rectifiers and inverters. A set of possible voltages is selected so that an equation with a time integral considered within a sampling period should be satisfied every sampling time. The simulation results show that the proposed control scheme produces good characteristics comparable to a conventional method of using a set of triangular carriers in some performance criteria such as unity power factor, low harmonic distortion of input current and voltage balancing of two series-connected DC capacitors.
单相三电平PWM整流器的新PWM方法
本文提出了一种简单的开关方法来产生主要与单相三电平PWM整流器相关的PWM模式。所采用的PWM开关方式与空间矢量PWM方法类似,该方法在三相整流器和逆变器中广泛使用。选择一组可能的电压,以便在每次采样时间内都满足一个考虑时间积分的方程。仿真结果表明,该控制方案在功率因数统一、输入电流谐波失真低、直流电容串联电压平衡等性能指标上均优于传统的三角载波控制方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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