Provided is an electric drive device which controls a current supplied to coils during normal operation so as to be less than a current limit value when normal, which is determined from heat generating properties and heat radiating properties of a thermally coupled body that includes the coils and an inverter circuit. When an abnormality in each group or each phase of the coils and the inverter circuit is detected, the supply of current to all phases of a group suffering an abnormality in the coils, or to a phase that is not capable of continuous operation, is stopped or reduced; and the limit value of the current supplied to a coil that is capable of continuous operation is reset to a current limit value in the event of abnormality, which is larger than the current limit value when normal, within the range of improvement of the heat generating properties of the thermally coupled body due to the stopping or reduction of the supply of current.
ELECTRIC DRIVE DEVICE AND CONTROL METHOD THEREFOR
ELEKTRISCHE ANTRIEBSVORRICHTUNG UND STEUERUNGSVERFAHREN DAFÜR
DISPOSITIF D'ENTRAÎNEMENT ÉLECTRIQUE ET SON PROCÉDÉ DE COMMANDE
2021-04-28
Patent
Electronic Resource
English
Drive device for electric four-wheeler, control method therefor, and storage medium
European Patent Office | 2024
|ELECTRIC POWER-ASSISTED BICYCLE, DRIVE SYSTEM AND CONTROL METHOD THEREFOR
European Patent Office | 2019
|