双Boost单相逆变器改进功率解耦控制  

Improved Power Decoupling Control for Double Boost Single-phase Inverter

作　　者：高英瀚 唐芬[1,2] 黄松伟 刘京斗 GAO Ying-han;TANG Fen;HUANG Song-wei;LIU Jing-dou(Beijing Jiaotong University,National Active Distribution Network Technology Research Center,Beijing 100044,China)

机构地区：[1]北京交通大学,国家能源主动配电网技术研发中心,北京100044 [2]北京电动车辆协同创新中心,北京100044

出　　处：《电力电子技术》2020年第3期114-116,共3页Power Electronics

基　　金：中国南方电网有限责任公司科技项目(090000KK52180116)。

摘　　要：双Boost单相逆变器可以实现单级升压逆变,且因其对称的拓扑结构天然存在功率解耦的条件,较适合应用于低压分布式电源并入单相电网领域。但实际中双Boost电路的两个输出电容容值会存在差异,影响现有功率解耦控制的性能。针对该问题,首先分析了电容不匹配时传统功率解耦策略的不足,在此基础上提出了一种改进型功率解耦控制。最后实验结果表明,所提策略能够在电容不匹配工况下实现功率解耦控制,有效减小系统对电容匹配程度的依赖。The double Boost single-phase inverter can realize single-stage Boost,and because of its symmetrical topology,there are natural power decoupling conditions,which are suitable for the low-voltage distributed power supply to be integrated into the single-phase power grid.However,in practice,the capacitance of the two output capacitors in double Boost circuit may be different,which affects the performance of the existing power decoupling control.Aiming at this problem,the deficiency of traditional power decoupling strategy when capacitance mismatch is firstly analyzed.Based on this,an improved power decoupling control is proposed.Finally,the experimental results show that the proposed control can be used under the condition of capacitor mismatch.Power decoupling control is implemented to effectively reduce the dependence of the system on the capacitance matching.

关 键 词：逆变器 功率解耦 电容不匹配 

分 类 号：TM464[电气工程—电器]