Motor control unit has error detection device connected in parallel with each switch to detect error state in which winding(s) is permanently connected in single phase between supply line pair

摘要

The unit has several switches, each to be thought of as in series with a selected winding between an associated selected pair of supply lines and an error detection device connected in parallel with each switch to detect an error state in which at least one winding is permanently connected in single phase between one pair of supply lines.