摘要
为从光伏并网发电系统中得到理想的电能,在全桥电路的基础上,设计了新型H6结构,该结构能够有效抑制共模漏电流。同时提出了QPR并网电流控制策略,解决了传统PI控制存在稳态误差的问题,克服了PR控制对电网电流在基波发生小幅偏差干扰的不足。在Matlab/Simulink平台搭建了基于新型H6逆变桥的QPR控制仿真模型。实验证明了所研究的新型结构和控制策略的准确性和实用性,在实际应用中具有很好的工程价值。
In order to obtain the ideal electric energy from the photovoltaic grid-connected power generation system,a new H6 topology was designed based on the full-bridge circuit,it could effectively suppress the common mode leakage current.At the same time,QPR grid-connected current control strategy was proposed to solve the problem of steady-state error in traditional PI control and overcome the insufficiency of PR control in the interference of small deviation of grid current in fundamental frequency.In Matlab/Simulink platform,a QPR control simulation model based on the new H6 inverter bridge was established.The experiments prove the accuracy and practicability of the new topology and control strategy proposed,and the design has good engineering value in practical application.
作者
栾天
任一峰
安坤
郭睿
卫芃毅
LUAN Tian;REN Yifeng;AN Kun;GUO Rui;WEI Pengyi(School of Electrical and Control Engineering,North University of China,Taiyuan 030051,China)
出处
《实验室研究与探索》
CAS
北大核心
2019年第12期40-43,共4页
Research and Exploration In Laboratory
基金
国家自然科学基金(61774138)
中北大学研究生科技立项项目(20181575)
关键词
光伏并网逆变器
H6结构
共模漏电流
准比例谐振控制
photovoltaic grid-connected inverter
H6 topology
common mode leakage current
quasi proportional resonance control
