A control device 50 that drives and controls a brushless motor 3 of a four-pole 24-slot configuration includes: a base current calculation section 52 that calculates fundamental-wave current indicating a winding current value associated with maximum torque control; a correction component calculation section 59 that calculates 12 th -order first higher harmonic wave component Bsin12(¸+²) to cancel a torque ripple of magnet torque, and 12 th -order second higher harmonic wave component Asin12(¸+±) to cancel a torque ripple of reluctance torque, based on a phase current value detected by a current sensor 64; a correction map 58 in which relation between phase current and parameters A, B, ±, and ² of the both higher harmonic wave components is stored; and a current correction section 60 that corrects supply current by superimposing each 12 th -order higher harmonic wave component on the fundamental-wave current in order to create current command values Id' and Iq'.
METHOD FOR CONTROLLING BRUSHLESS MOTOR, DEVICE FOR CONTROLLING BRUSHLESS MOTOR, AND ELECTRIC POWER STEERING DEVICE
VERFAHREN ZUR STEUERUNG EINES BÜRSTENLOSEN MOTORS, VORRICHTUNG ZUR STEUERUNG EINES BÜRSTENLOSEN MOTORS UND ELEKTRISCHE SERVOLENKUNGSVORRICHTUNG
PROCÉDÉ DE COMMANDE D'UN MOTEUR SANS BALAIS, DISPOSITIF DE COMMANDE D'UN MOTEUR SANS BALAIS ET DISPOSITIF DE DIRECTION ASSISTÉE ÉLECTRIQUE
2020-01-22
Patent
Electronic Resource
English
IPC: | H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern / B62D MOTOR VEHICLES , Motorfahrzeuge / H02K Dynamoelektrische Maschinen , DYNAMO-ELECTRIC MACHINES |