Motor current detection device and air conditioning device

摘要

Provided are a motor current detection device which can obtain an accurate motor current and an air conditioning device using the motor current detection device. The motor current calculation device (9) includes: a GND wire (93); an instantaneous current detection unit (95); an average current detection unit (96); and a calculation unit (99). In the GND wire (93) are flowing a motor current (Im) electrically connected to a second fan motor (81) and a drive current (Id) electrically connected to a second motor driver (82) for driving the second fan motor (81). The instantaneous current detection unit (95) detects an instantaneous value of the sum of the motor current (Im) and the drive current (Id) flowing in the GND wire (93). The average current detection unit (96) detects an average value of the sum of the motor current (Im) and the drive current (Id) flowing in the GND wire (91). The calculation unit (99) calculates the motor current (Im) according to the detection results of the instantaneous current detection unit (95) and the average current detection unit (96).