Method and system for resolver alignment in electric motor...

Details Method and system for resolver alignment in electric motor... Method and system for resolver alignment in electric motor...

2007-05-03

2010-02-09

Masih, Karen (Department: 2837)

Electricity: motive power systems

Induction motor systems

Primary circuit control

C318S609000, C318S661000

Reexamination Certificate

active

07659688

ABSTRACT:
Methods and systems are provided for aligning a resolver in an electric motor system. The method includes commanding a d-axis current command and a speed command, operating an electric motor without a load in response to the d-axis current command and the speed command, determining a rotor speed in response to the speed command, and determining an offset of the resolver based on the speed command and the rotor speed when the rotor speed has substantially stabilized.

REFERENCES:
patent: 2006/0113949 (2006-06-01), Nishimura et al.
patent: 2007/0061060 (2007-03-01), Karrelmeyer et al.

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