A regenerative braking controller for an AC motor. To determine an electromagnetic torque for slowing or stopping the motor, the regenerative braking controller accesses a lookup table to retrieve a braking torque value corresponding to a current estimate of rotor velocity. The retrieved braking torque may correspond to a maximum or minimum torque level at which regenerative braking will occur at the current rotor velocity, or to a torque level at which charging current during regenerative braking will be maximized. If an external mechanical brake is present, the regenerative braking controller can forward an external braking torque signal to a controller so that the mechanical brake can apply the remainder of the braking force beyond that indicated by the regenerative braking torque. A method for establishing the braking torques to be stored in the lookup table is also disclosed.
OPTIMIZED REGENERATIVE BRAKING CONTROL OF ELECTRIC MOTORS USING LOOK-UP TABLES
2023-03-16
Patent
Electronic Resource
English
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern |
Optimized regenerative braking control of electric motors using look-up tables
European Patent Office | 2022
|Optimized Regenerative Braking Control of Electric Motors Using Look-Up Tables
European Patent Office | 2017
|OPTIMIZED REGENERATIVE BRAKING CONTROL OF ELECTRIC MOTORS USING LOOK-UP TABLES
European Patent Office | 2021
|Optimized regenerative braking control of electric motors using look-up tables
European Patent Office | 2021
|