An electric motor drive control device includes: an inverter circuit that converts DC power inputted via a DC bus to multiphase AC power and outputs the multiphase AC power to an electric motor; a current detector that detects a DC current flowing in the DC bus; a PWM generator that generates PWM signals and outputs the PWM signals to the inverter circuit; a current calculator that calculates a current value for each of phases to be flowed to the electric motor based upon a value of the DC current and the PWM signals; and a current controller that generates a command signal based upon the current value, and outputs the command signal to the PWM generator, wherein: if one of the phases of the AC power has become missing, the current calculator determines which phase is one that has become missing and calculates current values for other phases.
Electric Motor Drive Control Device, Electrically Driven Power Steering Device, Electrically Driven Brake Device, and Electrically Driven Pump Device
2016-03-31
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 / B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF / F04D Strömungsarbeitsmaschinen , NON-POSITIVE-DISPLACEMENT PUMPS |
Europäisches Patentamt | 2017
|ELECTRICALLY-DRIVEN DRIVE DEVICE AND ELECTRICALLY-DRIVEN POWER STEERING DEVICE
Europäisches Patentamt | 2019
|ELECTRICALLY-DRIVEN DRIVE DEVICE AND ELECTRICALLY-DRIVEN POWER STEERING DEVICE
Europäisches Patentamt | 2019
|Europäisches Patentamt | 2021
|Europäisches Patentamt | 2021
|