According to analysis the difficulty of the capacity of the stand-alone photovoltaic system, the loss of the electric charge or discharge in the energy storage,the limited capability and the high cost of the investment , a proposal was offered that combining the control of the photovoltaic array MPPT and the compensa-ted control of the idle work which base of the theory of the instantaneous power together,so as to create a new -type of comprehensive photovoltaic grid control system. As a result,the photovoltaic system not only can provide some certain active power to the power grid, but also it can achieve the aim of compensating the harmonic current of the idle work of the power grid. By making use of the TMS320LF2407 DSP as the core control,and using the software of Matlab/Simulink and experimental to check the truth of theory and the rationality in reality by simulation.%针对独立光伏系统的容量不易确定、储能环节充放电损耗大、调节能力有限及投资成本高等缺点,提出了将光伏阵列MPPT控制与基于瞬时无功理论的无功和谐波电流补偿控制有机结合在一起的新型光伏并网综合控制策略,使光伏并网系统既能一定程度上实现电网无功和谐波电流补偿,又能向电网提供一定的有功功率.以TMS320LF2407 DSP控制器为核心控制,并利用Matlab/Simulink软件进行仿真,并且通过实验验证了理论的正确性和实际的合理性.
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