Active Power Decoupling Design of a Single-Phase AC-DC Converter

被引：8
|
作者：
Qiu, Mingjie [1 ]
Wang, Ping [1 ]
Bi, Huakun [1 ]
Wang, Zhishuang [1 ]
机构：
[1] Tianjin Univ, Sch Elect & Informat Engn, Tianjin 300072, Peoples R China
来源：
ELECTRONICS | 2019年 / 8卷 / 08期
关键词：
single-phase converter; active power decoupling; second-order ripple reduction; DC bus voltage; INVERTER; VOLTAGE;
D O I：
10.3390/electronics8080841
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
The second-order ripple power of single-phase converter causes second-order ripple voltages on the DC bus. For eliminating second-order ripple components, passive power decoupling methods including DC bus electrolytic capacitors have some shortcomings, such as low power density and poor stability of converters. Thus, an active power decoupling method based on a single-phase converter is proposed in this paper. The control method, taking single-phase voltage source pulse width modulation (PWM) rectifier (single-phase VSR) as the basic converter and adopting a buck-boost power decoupling circuit, introduces second-order ripple of DC bus voltage into a power decoupling circuit. The ripple acts as compensation of the phase deviation between the command value and the actual value of the second-order ripple current. Therefore, estimation of the second-order ripple current is more accurate, the power decoupling circuit absorbs the second-order ripple power behind the H-bridge more completely, and the DC bus voltage ripple is effectively suppressed accordingly. Finally, experimental results of the single-phase VSR are given to verify the validity of the proposed method.
引用
收藏
页数：18
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