摘要
为了在光伏并网发电的同时改善并网点的电能质量,提出了具有谐波补偿功能的光伏并网发电系统。对于并网点的谐波电流采用改进的ip-iq检测方法,检测所得谐波补偿信号与正常的光伏发电并网信号合成,作用于逆变器实现光伏并网和谐波补偿。逆变器的控制采用SVPWM控制策略,以减少开关损耗。Matlab仿真结果表明该系统在并网发电的同时可有效补偿并网点谐波电流,验证了所提系统结构和控制策略的可行性,该结论为工程应用提供了参考。
In order to improve the power quality of grid connected photovoltaic system, a photovoltaic grid connected generation system with harmonic compensation function is proposed. The harmonic current of the network is improved by using the improved ip-iq detection method, the detected harmonic compensation signal and the normal grid connected signal synthesis. Inverter control uses SVPWM control strategy to reduce switching losses. Matlab simulation results show that the system can effectively compensate the harmonic current in grid connected point when supporting power, verifying the feasibility of the proposed system structure and control strategy. The conclu-sion provides a reference for engineering application.
出处
《电力与能源进展》
2016年第3期51-57,共7页
Advances in Energy and Power Engineering
基金
山东省高等学校科技计划:项目编号:J15LN31。
