基于空间矢量的三相并网光伏逆变器控制系统设计

摘要

针对三相电压型并网光伏系统，阐述基于空间电压矢量的控制策略、变步长扰动观测法实现最大功率跟踪、有功无功独立控制算法。以上有机结合的综合控制策略，使得光伏并网系统既能实现最大功率跟踪，又能实现任意功率因数调节，有功无功独立控制。并利用Matlab/Simulink软件进行仿真，验证了该控制策略的正确性和优异特性。%According to the control of three-phase photovoltaic grid power system, one combined control method is introduced. It combines space sector technology, MPPT, and P/Q power independent control. Such integrated control strategy can realize MPPT in grid power system and adjust any power factor and P/Q independent control. Meanwhile, one module based on Matlab/Simulink is built to check the rationality and effect of above control method.