Power quality active control research of building integrated photovoltaic

Because the building integrated photovoltaic (BIPV) is commonly installed on the terminal of the distribution network, BIPV central inverter control strategy combined with reactive power compensation, harmonic suppression and grid-connected power generation is developed in the paper aiming at the present status of containing nonlinear loads and the poor performance of the power quality indices. The proposed recursive integral PI can be applied to obtain precise current of the inverter. The improved ip-iq algorithm put forward in the paper could detect the harmonics and reactive power rapidly. The introduction of network voltage forward feed control can effectively restrain system disturbance. Also, it enables BIPV inverter not only to provide active energy, but also to suppress the harmonics and reactive power current brought in by load. Prototype development based on simulation results and photovoltaic experimental platform verifies the correctness and effectiveness of BIPV inverters control method. On the other hand, the power quality active control thought based on inverters could apply to micro-grids containing various energy forms.