A control unit configured to control at least one motor of a vehicle is described that perform operations including receiving a target torque and a target speed for controlling the at least one motor, and determining, based on the target speed, a critical speed zone of the at least one motor. The critical speed zone defines a particular torque input to the at least one motor that induces torque ripple when the at least one motor is operating at any of a range of motor speeds. The operations performed by the control unit further include determining whether a current speed of the at least one motor is within the critical speed zone, and while determining that the current speed is within the critical speed zone, controlling a torque input to the at least one motor by avoiding the particular torque input defined by the critical speed zone.
ELECTRIC MOTOR CONTROL FOR PREVENTING TORQUE RIPPLE
20.08.2020
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 / B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion |
System for reducing torque ripple in an electric motor
Europäisches Patentamt | 2016
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