电工技术学报  2019, Vol. 34 Issue (12): 2539-2548    DOI: 10.19595/j.cnki.1000-6753.tces.180717
电力电子 |
一种有源电容变换器的分析与设计
魏川翔, 罗全明, 俎阿倩, 周雒维
输配电装备及系统安全与新技术国家重点实验室(重庆大学) 重庆 400044
Analysis and Design of an Active Capacitor Converter
Wei Chuanxiang, Luo Quanming, Zu Aqian, Zhou Luowei
State Key Laboratory of Power Transmission Equipment & System Security and New TechnologyChongqing University Chongqing 400044 China
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摘要 单相功率变换器由于交流侧与直流侧瞬时功率不平衡,其内部直流母线电容通常采用容值大的电解电容。而电解电容存在使用寿命短、热稳定性差等固有缺陷,影响变换器的使用寿命及可靠性。为此,该文设计一种有源电容变换器,通过控制其端口电压、电流满足电容元件的电压、电流微分关系,从而实现容值确定的有源电容来替代原来的电解电容,进而克服电解电容使用寿命短、热稳定性差的缺陷,延长单相功率变换器的使用寿命并提高了其热稳定性。本文首先介绍直流母线电容大小的计算方法,然后阐述有源电容变换器的工作原理及其参数定量设计的方法,最后利用仿真软件和样机进行相关仿真及实验验证,结果验证了理论分析和参数设计的正确性。
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关键词 无电解电容有源电容变换器模块化设计准PR控制    
Abstract:Single-phase power converter usually adopts large-capacity electrolytic capacitor because of the instantaneous power imbalance between the AC side and the DC side. The electrolytic capacitor has inherent defects such as short service life and poor thermal stability, which affects the life and reliability of the converter. Therefore, an active capacitor converter is proposed in this paper. By controlling the port voltage and port current to meet the differential relationship of a capacitor, the active capacitor is replaced by the original electrolytic capacitor. Thereby, the inherent defects of the electrolytic capacitor can be overcome. Meanwhile, the service life of the single-phase power converter can be prolonged and the thermal stability can be improved. Firstly, the detailed calculation method of the bus capacitor is carried out. Then, the working principle and its parameter design method of the active capacitor converter are expounded. Finally, the simulation and an experimental prototype verify the active capacitor converter, which show the correction of the theory analysis and parameter design.
Key wordsElectrolytic capacitor free    active capacitor converter    modular design    quasi-PR control   
收稿日期: 2018-04-24      出版日期: 2019-06-28
PACS: TM46  
通讯作者: 魏川翔 男,1992年生,硕士,主要从事单相双向功率变换器、智能电网输电技术等方面的研究。E-mail: 407116081@qq.com   
作者简介: 罗全明 男,1976年生,教授,博士生导师,主要从事半导体照明驱动电源系统、通信电源系统、电力谐波治理、电动汽车与电网互动技术研究等方面的研究。E-mail: lqm394@126.com
引用本文:   
魏川翔, 罗全明, 俎阿倩, 周雒维. 一种有源电容变换器的分析与设计[J]. 电工技术学报, 2019, 34(12): 2539-2548. Wei Chuanxiang, Luo Quanming, Zu Aqian, Zhou Luowei. Analysis and Design of an Active Capacitor Converter. Transactions of China Electrotechnical Society, 2019, 34(12): 2539-2548.
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