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Title: Methods, systems and apparatus for adjusting duty cycle of pulse width modulated (PWM) waveforms

Abstract

Embodiments of the present invention relate to methods, systems and apparatus for controlling operation of a multi-phase machine in a vector controlled motor drive system when the multi-phase machine operates in an overmodulation region. The disclosed embodiments provide a mechanism for adjusting a duty cycle of PWM waveforms so that the correct phase voltage command signals are applied at the angle transitions. This 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.

Inventors:
; ; ;
Issue Date:
Research Org.:
NETL (National Energy Technology Laboratory, Pittsburgh, PA, and Morgantown, WV (United States))
Sponsoring Org.:
USDOE
OSTI Identifier:
1083973
Patent Number(s):
8,446,117
Application Number:
12/983,669
Assignee:
GM Global Technology Operations LLC (Detroit, MI)
DOE Contract Number:  
FC26-07NT43123
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Gallegos-Lopez, Gabriel, Kinoshita, Michael H, Ransom, Ray M, and Perisic, Milun. Methods, systems and apparatus for adjusting duty cycle of pulse width modulated (PWM) waveforms. United States: N. p., 2013. Web.
Gallegos-Lopez, Gabriel, Kinoshita, Michael H, Ransom, Ray M, & Perisic, Milun. Methods, systems and apparatus for adjusting duty cycle of pulse width modulated (PWM) waveforms. United States.
Gallegos-Lopez, Gabriel, Kinoshita, Michael H, Ransom, Ray M, and Perisic, Milun. Tue . "Methods, systems and apparatus for adjusting duty cycle of pulse width modulated (PWM) waveforms". United States. https://www.osti.gov/servlets/purl/1083973.
@article{osti_1083973,
title = {Methods, systems and apparatus for adjusting duty cycle of pulse width modulated (PWM) waveforms},
author = {Gallegos-Lopez, Gabriel and Kinoshita, Michael H and Ransom, Ray M and Perisic, Milun},
abstractNote = {Embodiments of the present invention relate to methods, systems and apparatus for controlling operation of a multi-phase machine in a vector controlled motor drive system when the multi-phase machine operates in an overmodulation region. The disclosed embodiments provide a mechanism for adjusting a duty cycle of PWM waveforms so that the correct phase voltage command signals are applied at the angle transitions. This 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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2013},
month = {5}
}

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