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Title: Methods, systems and apparatus for controlling operation of an electric machine in an overmodulation region

Patent ·
OSTI ID:1532117
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Embodiments of the present disclosure relate to methods, systems and apparatus for controlling operation of an electric machine in a vector controlled motor drive system when the electric machine operates in an overmodulation region. The disclosed embodiments can reduce variations/errors in the phase voltage command signals applied to the multi-phase machine so that phase current may be properly regulated thus reducing current/torque oscillation, which can in turn improve machine efficiency and performance, as well as utilization of the DC voltage source.

Research Organization:
GM Global Technology Operations, LLC, Detroit, MI (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
FC26-07NT43123
Assignee:
GM Global Technology Operations, LLC (Detroit, MI)
Patent Number(s):
8,829,827
Application Number:
13/339,256
OSTI ID:
1532117
Resource Relation:
Patent File Date: 2011-12-28
Country of Publication:
United States
Language:
English

References (4)

Control apparatus and method for motor drive system patent June 2011
Anti-windup control for a current regulator of a pulse width modulation inverter patent January 2010
Methods, Systems and Apparatus for Overmodulation of a Five-Phase Machine patent-application September 2011
Motor control apparatus and motor control method patent March 2005

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