Electric power converter

An electric power converter comprising:

• a processor unit that outputs control signals;
• and
• a power module that converts direct-current power supplied from a driving electric power source, into alternating-current power based on the control signals,
• the power module including
• an inverter circuit in which multiple arms each having power semiconductor devices connected in series are connected in parallel,
• a driver circuit that outputs drive signals obtained by amplifying the control signals based on a control voltage, to the power semiconductor devices, and
• an abnormality detection circuit that executes detection of at least one of abnormalities that are overheating of the power semiconductor devices, a short circuit in the arms, and a drop in the control voltage to be supplied to the driver circuit, and outputs an abnormality detection signal indicating a result of the abnormality detection to the processor unit, wherein
• the processor unit executes detection of a predicted state that is a stage prior to occurrence of at least one of the abnormalities, and
• when the predicted state is not detected, the processor unit makes a determination that the abnormality is not caused in the power module.