The invention provides a control method for a double-feed permanent magnet synchronous motor of an electric automobile. The control method is capable, in allusion to the novel motor of double-stator structure, equally dividing the whole motor to inner and outer motors, and combining the double torque control, the double field weakening control, the single weakening and single torque control; while the electric automobile is started in the low speed, the inner and outer motors are simultaneously run under the torque control, and the rotor obtains the maximum electromagnetic torque; while the electric automobile is started in the high speed, the inner and outer motors are simultaneously run under the field weakening control, the permanent magnet flux linkage of the rotor is reduced under the limit of the given direct current voltage, the rotate speed is further improved in the constant power, and the field weakening control of the inner and outer motors acts on the rotor simultaneously; while the electric automobile overtakes in the high speed, the outer motor enters the field weakening control so that the speed is improved, the inner motor distributes d and q-shaft current in the maximum torque current ratio under the action of the torque control, and the torque of the rotor is increased.
Control method for double-feed permanent magnet synchronous motor of electric automobile
2015-07-29
Patent
Elektronische Ressource
Englisch
IPC: | H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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