Commercial power complementation photovoltaic control inversion integrated machine and control strategy of

The invention relates to a commercial power complementation photovoltaic control inversion integrated machine and a control strategy of. The integrated machine mainly comprises a photovoltaic array, an MPPT controller, a storage battery pack, an inverter, a transformer, and a relay. The photovoltaic array is connected to the input end of the MPPT controller, and the output end of the MPPT controller is connected with the storage battery pack. A terminal of the storage battery pack is connected with the input end of the inverter, and the output end of the inverter is connected with a primary winding of the transformer. The secondary winding of the transformer is connected with a load or a power grid through the relay. Through the changing of the control strategy, the integrated machine completes functions of commercial power complementation and controllable commercial power current. Compared with a control inversion integrated machine sold in a market, the integrated machine greatly reduces the hardware cost,