Interconnected inverter system and method of manufacturing interconnected inverter system

A method of manufacturing an interconnected inverter system, the method being a method of diverting a system, the system including

• an inverter circuit that converts DC power from a DC power supply into AC power,
• a voltage sensor that detects a voltage of DC power on a DC power supply side of the inverter circuit,
• a DC current sensor that detects a current of DC power on the DC power supply side of the inverter circuit,
• a motor that generates driving force by using AC power from the inverter circuit, and
• a control unit that controls the inverter circuit,
• the method comprising:
• providing a terminal for connection to the DC power supply, of input of DC power to the inverter circuit;
• providing a terminal for connection to an AC power line, of output of AC power from the inverter circuit;
• and
• modifying a method of control by the control unit (i) to calculate actual power of AC power provided from the inverter circuit by using a product of a voltage value detected by the voltage sensor and a current value detected by the DC current sensor and (ii) to control the inverter circuit such that the calculated actual power follows a power command value from outside of the interconnected inverter system,
• wherein the control unit controls the inverter circuit further in consideration of compensation for element loss in the inverter circuit.