GROUP OPERATION CONTROLLER OF REVERSIBLE SINGLE-PHASE INDUCTION MOTOR

摘要

PROBLEM TO BE SOLVED: To provide a controller capable of individually reversibly operating many reversible single-phase induction motors by an internal control apparatus. SOLUTION: The many reversible single-phase induction motors are divided into n blocks, each block is divided into m groups respectively, a positive rotation side power source bus-bar and a reverse rotation side power source bus-bar connecting the positive rotation side and the reverse rotation side power source bus-bar of the electric motor of the group every group in parallel are connected to one pole of a single-phase alternating current power source through a positive and reverse rotation selection switch or a group selection switch, a set of two common side power source bus-bars in which the common side power source terminal of the electric motor of the block is connected in parallel through the wraparound prevention diode of both forward and reverse polarities is connected to the other pole of the single-phase alternating current power source through the block selection switch to constitute a matrix control circuit, and the electric motor operated by the combination of the opening and closing of the group selection switch and the block selection switch is selected.