首页>
外国专利>
DRIVE CIRCUIT FOR SYNCHRONOUS MOTOR, SYNCHRONOUS MOTOR DRIVEN BY DRIVE CIRCUIT, AIR BLOWER INCLUDING SYNCHRONOUS MOTOR, AIR CONDITIONER INCLUDING AIR BLOWER, AND METHOD OF DRIVING SYNCHRONOUS MOTOR
DRIVE CIRCUIT FOR SYNCHRONOUS MOTOR, SYNCHRONOUS MOTOR DRIVEN BY DRIVE CIRCUIT, AIR BLOWER INCLUDING SYNCHRONOUS MOTOR, AIR CONDITIONER INCLUDING AIR BLOWER, AND METHOD OF DRIVING SYNCHRONOUS MOTOR
A drive circuit for a synchronous motor including a rotor having ten magnetic poles formed by a permanent magnet, and a stator in which a winding is wound in a concentrated manner around nine teeth facing the rotor, the drive circuit including: an inverter including a plurality of switching elements in bridge connection; and a control unit that controls the inverter in such a manner that a square-wave-shaped current flows to the winding, wherein the control unit operates in such a manner that an energization phase at which to pass the square-wave-shaped current falls within a range of electric angles of −10° to +5° from an energization phase at which the current is minimum when a target torque of the synchronous motor is generated.
展开▼