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AssigneeMitsubishi Electric Corporation
InventorMasafumi Ichihara
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A power conversion device includes a semiconductor power converter that converts direct current power into alternating current power for a motor, a common-mode reactor having first and second auxiliary windings added thereto, the common-mode reactor reducing common-mode current that may flow between the semiconductor power converter and the motor, a signal generator that superimposes an alternating current on the first auxiliary winding, and a detection circuit that detects a saturation state of the common-mode reactor on the basis of the superimposed current superimposed on the first auxiliary winding and a winding voltage generated in the second auxiliary winding by the superimposed current.
A power conversion device comprising:
A magnetic saturation detection method for detecting magnetic saturation of a common-mode reactor, the common-mode reactor being disposed between a power converter and a load and having first and second auxiliary windings added thereto, the method being applied to a device, the device including the common-mode reactor and a signal generator to generate a current to be superimposed on the first auxiliary winding, the method comprising:
Dependencies are inferred from the claim text.