Inverter device, inverter control system, motor control system, and control method for inverter device

摘要

An object of the present invention is to provide an inverter device in which a power module is installed in an unknown radiator, and which can realize overload protection while maintaining high performance of the device. A radiator, an inverter (3) provided with a semiconductor element and attached to the radiator, a detection unit (16, 17) for detecting the temperature of the inverter (3), and detection of the detection unit (16, 17) An estimation unit (9) that calculates an estimated value of the thermal resistance and heat capacity of the radiator based on the temperature, and a control unit (C) that controls the drive of the inverter (3) based on the estimated value This is an inverter device (I) provided.