Motor controller having dead ended winding detection capability on a single phase line

摘要

Problems associated with delta motors and motor controllers being subjected to the potentially damaging combination of extremely low motor torque and very high overcurrent conditions resulting from a single dead ended motor winding are eliminated in a motor controller that automatically inhibits operation of the delta motor upon detecting that the two leads of a single motor winding have both been connected to the supply lines for a single phase of a three phase power source.