| 摘要 |
The present invention is an indirect matrix converter capable of improving the accuracy of current detection. A converter (1) receives input of an AC voltage, converts the AC voltage into a DC voltage, and applies the DC voltage between a power line (LH) on a positive electrode side and a power line (LL) on a negative electrode side. A snubber circuit (2) has a capacitor (C1) provided between the power lines (LH, LL), and a diode (D1) connected in series with the capacitor (C1) between the power lines (LH, LL), and including an anode on a side close to the power line (LH) on the positive electrode side in a series path with the capacitor (C1). An inverter (3) converts the DC voltage into an AC voltage, and applies the AC voltage to an inductive load (8). An inverter-side current detection unit (4) detects a current that flows through the power line (LH) on the positive electrode side or the power line (LL) on the negative electrode side between the inverter (3) and the snubber circuit (2). |
