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中文摘要：
提出一种新颖的基于LCL滤波的比例谐振和谐波补偿电流控制策略,对基波电流进行控制和谐波电流进行补偿,考虑光伏阵列电气特性受温度和光照条件的影响,将最大功率跟踪技术和功率因数校正技术集成在统一的控制系统,分析不同比例增益对系统稳定性的影响。仿真结果表明提出的控制策略具有强健的鲁棒性和稳定性,使注入电网电流和电网电压同相,功率因数为1,总谐波畸变率满足国际IEEE关于分布式发电并网的要求。
英文摘要：
A new novel current control algorithm of proportional resonant and harmonic compensation based on LCL filter was proposed in this paper,which controlled the fundamental current and compensated the harmonic current components,meanwhile considering the influence of temperature and irradiation intensity upon the photovoltaic array electrical characteristics.The maximum power point tracking technique and power factor correction technique were integrated into the unified control system,and the impact of different proportional gain on the system stability was analyzed.The simulation results indicate that the proposed control algorithm has strong robustness and stability,the injected grid current is in phase with power grid voltage with the unity of power factor,and the obtained THD complies with the stringent standard of IEEE over the distributed power generation connected to power grid.
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