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Title: Multilevel-Dc-Bus Inverter For Providing Sinusoidal And Pwm Electrical Machine Voltages

Abstract

A circuit for controlling an ac machine comprises a full bridge network of commutation switches which are connected to supply current for a corresponding voltage phase to the stator windings, a plurality of diodes, each in parallel connection to a respective one of the commutation switches, a plurality of dc source connections providing a multi-level dc bus for the full bridge network of commutation switches to produce sinusoidal voltages or PWM signals, and a controller connected for control of said dc source connections and said full bridge network of commutation switches to output substantially sinusoidal voltages to the stator windings. With the invention, the number of semiconductor switches is reduced to m+3 for a multi-level dc bus having m levels. A method of machine control is also disclosed.

Inventors:
 [1]
  1. Knoxville, TN
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
880301
Patent Number(s):
6,969,967
Application Number:
10/734940
Assignee:
UT-Battelle LLC (Oak Ridge, TN) OSTI
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Patent
Country of Publication:
United States
Language:
English

Citation Formats

Su, Gui-Jia. Multilevel-Dc-Bus Inverter For Providing Sinusoidal And Pwm Electrical Machine Voltages. United States: N. p., 2005. Web.
Su, Gui-Jia. Multilevel-Dc-Bus Inverter For Providing Sinusoidal And Pwm Electrical Machine Voltages. United States.
Su, Gui-Jia. Tue . "Multilevel-Dc-Bus Inverter For Providing Sinusoidal And Pwm Electrical Machine Voltages". United States. doi:. https://www.osti.gov/servlets/purl/880301.
@article{osti_880301,
title = {Multilevel-Dc-Bus Inverter For Providing Sinusoidal And Pwm Electrical Machine Voltages},
author = {Su, Gui-Jia},
abstractNote = {A circuit for controlling an ac machine comprises a full bridge network of commutation switches which are connected to supply current for a corresponding voltage phase to the stator windings, a plurality of diodes, each in parallel connection to a respective one of the commutation switches, a plurality of dc source connections providing a multi-level dc bus for the full bridge network of commutation switches to produce sinusoidal voltages or PWM signals, and a controller connected for control of said dc source connections and said full bridge network of commutation switches to output substantially sinusoidal voltages to the stator windings. With the invention, the number of semiconductor switches is reduced to m+3 for a multi-level dc bus having m levels. A method of machine control is also disclosed.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Nov 29 00:00:00 EST 2005},
month = {Tue Nov 29 00:00:00 EST 2005}
}

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