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Title: Utilizing zero-sequence switchings for reversible converters

Abstract

A method for providing additional dc inputs or outputs (49, 59) from a dc-to-ac inverter (10) for controlling motor loads (60) comprises deriving zero-sequence components (V.sub.ao, V.sub.bo, and V.sub.co) from the inverter (10) through additional circuit branches with power switching devices (23, 44, 46), transforming the voltage between a high voltage and a low voltage using a transformer or motor (42, 50), converting the low voltage between ac and dc using a rectifier (41, 51) or an H-bridge (61), and providing at least one low voltage dc input or output (49, 59). The transformation of the ac voltage may be either single phase or three phase. Where less than a 100% duty cycle is acceptable, a two-phase modulation of the switching signals controlling the inverter (10) reduces switching losses in the inverter (10). A plurality of circuits for carrying out the invention are also disclosed.

Inventors:
; ; ; ; ; ;
Publication Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1175171
Patent Number(s):
6,831,442
Application Number:
10/189,823
Assignee:
General Motors Corporation (Torrance, CA)
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Hsu, John S., Su, Gui-Jia, Adams, Donald J., Nagashima, James M., Stancu, Constantin, Carlson, Douglas S., and Smith, Gregory S. Utilizing zero-sequence switchings for reversible converters. United States: N. p., 2004. Web.
Hsu, John S., Su, Gui-Jia, Adams, Donald J., Nagashima, James M., Stancu, Constantin, Carlson, Douglas S., & Smith, Gregory S. Utilizing zero-sequence switchings for reversible converters. United States.
Hsu, John S., Su, Gui-Jia, Adams, Donald J., Nagashima, James M., Stancu, Constantin, Carlson, Douglas S., and Smith, Gregory S. 2004. "Utilizing zero-sequence switchings for reversible converters". United States. https://www.osti.gov/servlets/purl/1175171.
@article{osti_1175171,
title = {Utilizing zero-sequence switchings for reversible converters},
author = {Hsu, John S. and Su, Gui-Jia and Adams, Donald J. and Nagashima, James M. and Stancu, Constantin and Carlson, Douglas S. and Smith, Gregory S.},
abstractNote = {A method for providing additional dc inputs or outputs (49, 59) from a dc-to-ac inverter (10) for controlling motor loads (60) comprises deriving zero-sequence components (V.sub.ao, V.sub.bo, and V.sub.co) from the inverter (10) through additional circuit branches with power switching devices (23, 44, 46), transforming the voltage between a high voltage and a low voltage using a transformer or motor (42, 50), converting the low voltage between ac and dc using a rectifier (41, 51) or an H-bridge (61), and providing at least one low voltage dc input or output (49, 59). The transformation of the ac voltage may be either single phase or three phase. Where less than a 100% duty cycle is acceptable, a two-phase modulation of the switching signals controlling the inverter (10) reduces switching losses in the inverter (10). A plurality of circuits for carrying out the invention are also disclosed.},
doi = {},
url = {https://www.osti.gov/biblio/1175171}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Dec 14 00:00:00 EST 2004},
month = {Tue Dec 14 00:00:00 EST 2004}
}

Works referenced in this record:

Bi-directional DC to DC converters for fuel cell systems
conference, January 1998