Disclosed is a technique of correcting a resolver offset by measuring and correcting an offset of a resolver assembled to a motor of an eco-friendly vehicle in an accurate and simple way. The offset measurement process includes, after completing the assembly of a resolver a resolver to a motor, rotating the motor by using a rotation device able to transfer a rotation force to the motor, setting a voltage instruction and current-controlling the motor according to the voltage instruction, and obtaining a d-axis current and a q-axis current, which are feedback currents, during the current-control of the motor. Then when the system is in a steady state, a resolver offset ({tilde over (θ)}) is calculated from the d-axis current and the q-axis current by using {tilde over (θ)}=tan−1(d-axis current/q-axis current).
Technique for correcting resolver offset
2016-11-01
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 |
Method for correcting resolver offset for conrolling motor
Europäisches Patentamt | 2017
Method for correcting resolver offset for conrolling motor
Europäisches Patentamt | 2017
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