电气传动2017，Vol.47Issue(6)：23-27,35,6.DOI:10.19457/j.1001-2095.20170605
非隔离型光伏并网逆变器共模电流抑制
Common Mode Current Suppression for Non-isolated Photovoltaic Grid-connected Inverters
摘要
Abstract
The common mode current in non?isolated photovoltaic(PV)grid?connected systems is large,which is mainly affected by the control method. The generation mechanism of system common mode current and the traditional direct power control(DPC)were analyzed,and a novel model predictive direct power control(MPDPC) strategy was proposed based on the new switching table and performance evaluation function. The MPDPC could select the optimal voltage vector by weighting the coupling between the various control performance index. Simulation experiments of the proposed MPDPC were carried out and the comparison of MPDTC and DPC were conducted. The results show that the proposed MPDPC can be able to suppress common mode current and reduce the output power ripples,which verifies the feasibility and validity of the proposed MPDPC.关键词
非隔离型光伏并网逆变器/共模电流/模型预测直接功率控制/性能指标评估函数Key words
non-isolated PV grid-connected inverters/common mode current/model predictive direct power control(MPDPC)/performance evaluation function分类
信息技术与安全科学引用本文复制引用
李奎,韩振铎,牛峰,王尧..非隔离型光伏并网逆变器共模电流抑制[J].电气传动,2017,47(6):23-27,35,6.基金项目
河北省高等学校自然科学青年基金项目(QN2016193,QN2014148) （QN2016193,QN2014148）
河北省高等学校创新团队领军人才培育计划(LJRC003) （LJRC003）
