Off-grid inverter based on new energy and electric supply complementary power supply and control method thereof

The invention discloses an off-grid inverter based on new energy and electric supply complementary power supply and a control method thereof. The inverter comprises a storage battery, a controller, a new energy charging unit and a rectifier. The method comprises the step of adjusting and controlling the power of the rectifier according to the detected charging current to enable the storage battery to be charged in a constant-current charging mode or adjusting and controlling the power of the rectifier according to the detected charging voltage to enable the storage battery to be charged in a float charging mode. According to the inverter and the control method, the storage battery is not charged and discharged frequently, the power supply quality and the power supply reliability of the inverter are improved, and the power supply continuity and the power supply stability of the inverter are improved. The off-grid inverter based on the new energy and the electric supply complementary power supply and the control method for the off-grid inverter can be widely applied to the field of inverters.