一种基于H6型并网逆变器调制策略的研究  

Research on a New Control Strategy of H6 Grid-connected Inverter

作　　者：周皓[1] 邸彩芸 赵志 李伟力[1] 曹君慈[1] ZHOU Hao;DI Caiyun;ZHAO Zhi;LI Weili;CAO Junci(School of Electrical Engineering,Beijing Jiaotong University,Beijing 100044,China;State Grid Jibei Electric Power Company Limited Skills Training Center,Baoding 071051,Hebei,China)

机构地区：[1]北京交通大学电气工程学院,北京100044 [2]国网冀北电力有限公司技能培训中心,河北保定071051

出　　处：《电气传动》2020年第2期35-38,46,共5页Electric Drive

基　　金：国家自然科学基金(51577007)。

摘　　要：针对传统H6型单相非隔离光伏并网逆变器只能工作在单位功率因数逆变状态而无法进行无功调节的问题,在分析了该拓扑逆变器电压和电流矢量关系的基础上,提出了一种新型的H6型单相光伏并网逆变器调制策略,该调制策略通过当在电网电压的正半周内,在传统调制策略的基础上采用开关管S5与S1互补导通的方式来实现无功传输。最后,通过仿真和实验验证了所提出控制策略的有效性。In view of the traditional H6 single-phase non-isolated photovoltaic grid-connected inverter,it can only work in the unit power factor inverter state,but cannot carry out reactive power regulation.Based on the analysis of the relationship between the voltage and current vectors of the topology inverter,a new modulation strategy for H6 single-phase photovoltaic grid-connected inverter was proposed.This modulation strategy realized reactive power transmission by using the switching tube S5 and S1 complementary on the basis of the traditional modulation strategy in the positive half of the grid voltage.Finally,the effectiveness of the proposed control strategy was verified by the simulations and experiments.

关 键 词：非隔离型 单相逆变器 H6型并网逆变器 无功功率 

分 类 号：TP27[自动化与计算机技术—检测技术与自动化装置]