Inverter control device for air conditioner and inverter control system for air conditioner

摘要

An inverter control device (20) for an air conditioner includes a transformer (23) that reduces a current value of an alternating current obtained by an inverter circuit (22) and an alternating current obtained by the transformer (23) into an alternating voltage. A voltage resistance conversion circuit (24), a comparator (25) that outputs a command signal when the voltage value of the AC voltage obtained by the voltage resistance conversion circuit (24) is larger than a set voltage value, and a control unit (26) Have and. The control unit (26) outputs a control signal for determining the resistance value of the variable resistance included in the voltage resistance conversion circuit (24) to the voltage resistance conversion circuit (24). The resistance value is determined by the control signal output from the control unit (26) to the voltage resistance conversion circuit (24). The voltage-resistance conversion circuit (24) converts the alternating current obtained by the transformer (23) into an alternating voltage based on the resistance value determined by the control signal.