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
2020-08-20
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
|