A new control scheme for single-phase PWM multilevel rectifier with power-factor correction

被引：41
|
作者：
Lin, BR [1 ]
Lu, HH [1 ]
机构：
[1] Natl Yunlin Univ Sci & Technol, Dept Elect Engn, Yunlin 640, Taiwan
来源：
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS | 1999年 / 46卷 / 04期
关键词：
hysteresis current control; power-factor correction; programmable array logic; three-level rectifier;
D O I：
10.1109/41.778250
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
A new control scheme for a single-phase bridge rectifier with three-level pulsewidth modulation is proposed to achieve high power factor and low current distortion. The main circuit consists of a diode-bridge rectifier, a boost inductor, two ac power switches, and two capacitors. According to the proposed control scheme based on a voltage comparator and hysteresis current control technique, the output capacitor voltages are balanced and the line current will follow the supply current command. The supply current command is derived from a dc-link voltage regulator and an output power estimator. The major advantage of using a three-level rectifier is that the blocking voltage of each ac power device is clamping to half of the de-link voltage and the generated harmonics of the three-level rectifier are less than those of the conventional two-level rectifier, There are five voltage levels (0, +/-V-dc/2, +/-V-dc) on the ac side of the diode rectifier. The high power factor and low harmonic currents at the input of the rectifier are verified by software simulations and experimental tests.
引用
收藏
页码：820 / 829
页数：10
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