基于多功能光伏并网逆变器的电能质量调节系统

江友华; 陈江伟; 杜良俊

江友华,陈江伟,杜良俊.基于多功能光伏并网逆变器的电能质量调节系统[J].电测与仪表,2016,53(11):.
JIANG You-hua,CHEN Jiang-wei,DU LIANGJUN.A Power Quality Regulatory System Based on Multi-Functional Photovoltaic Grid-Connected Inverter[J].Electrical Measurement & Instrumentation,2016,53(11):.

基于多功能光伏并网逆变器的电能质量调节系统

A Power Quality Regulatory System Based on Multi-Functional Photovoltaic Grid-Connected Inverter

DOI：

中文关键词: 分布式发电多功能并网逆变器 LCL滤波电能质量调节无锁相环

英文关键词:distributed generation multi-functional grid-connected inverter LCL Filter power quality regulation no phase-locked loop

基金项目:上海市自然科学基金

作者中文名	作者英文名	单位
江友华	JIANG You-hua	上海电力学院电子与信息工程学院
陈江伟	CHEN Jiang-wei	上海电力学院电子与信息工程学院
杜良俊	DU LIANGJUN	杭州钱江电气集团

摘要点击次数: 1887

中文摘要:

针对分布式电网公共连接点处出现的谐波、无功和不平衡电流等电能质量问题,提出一种基于LCL滤波器的光伏并网发电与电能质量改善的复合控制策略,可以使多功能逆变器同时实现向分布式电网注入有功功率和对并网点处的谐波、负载无功、三相不平衡电流进行补偿。最大程度利用逆变器的硬件资源,减少硬件投入和设备体积,而达到改善公共连接点处电能质量的综合效果。并给出了一种无锁相环指令电流的生成算法,运用加权电流反馈控制设计了其并网电流跟踪器。最后,利用PSCAD/EMTDC验证了相关设计的可行性和有效性。

英文摘要:

On the issues of harmonics, reactive and unbalanced current at point of common coupling, the system use a grid-connection control structure of Three-phase photovoltaic system with power quality regulation function. Then the converter can inject power into the distribution grid and perform as shunt active power filter (APF). So it can improve the power quality and decrease the hardware investment. In addition, it gives an algorithm with no phase-locked loop, and designs a grid-current tracker with current weighted. In the end, this new structure and the control concept was demonstrated with extensive PSCAD simulation studies.

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