A method (200) of controlling an electric motor (116) may include determining a desired torque at the electric motor (116). A current at a first phase (142) of the electric motor (116) may be calculated at a controller (166). The calculated current may be a current that results in supplying the desired torque at the electric motor (116). The controller (166) may compare the calculated current to a predetermined threshold current, and when the calculated current is greater than the predetermined threshold current, the controller (166) may reduce the calculated current to the predetermined threshold current and adjust a current in a second phase (146) adjacent to the first phase (142) of the electric motor (116) to continue to supply the desired torque at the electric motor (116).
Current profile strategy for minimizing torque ripple and current
31.08.2017
Patent
Elektronische Ressource
Englisch
IPC: | H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen / 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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