Method and apparatus for sensorless operation of brushless permanent magnet motors

Title: Method and apparatus for sensorless operation of brushless permanent magnet motors

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Abstract

A sensorless method and apparatus for providing commutation timing signals for a brushless permanent magnet motor extracts the third harmonic back-emf of a three-phase stator winding and independently cyclically integrates the positive and negative half-cycles thereof and compares the results to a reference level associated with a desired commutation angle. 23 figs.

Inventors:: Sriram, T V

Issue Date:: 1998-04-14

Research Org.:: Midwest Research Institute, Kansas City, MO (United States)

Sponsoring Org.:: USDOE, Washington, DC (United States)

OSTI Identifier:: 644392

Patent Number(s):: 5739652

Application Number:: PAN: 8-770,862

Assignee:: General Motors Corp., Detroit, MI (United States)

DOE Contract Number:: AC36-83CH10093

Resource Type:: Patent

Resource Relation:: Other Information: PBD: 14 Apr 1998

Country of Publication:: United States

Language:: English

Subject:: 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; ELECTRIC MOTORS; PERMANENT MAGNETS; CONTROL THEORY; CONTROL SYSTEMS; SWITCHES; TIMING CIRCUITS

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                    Sriram, T V. Method and apparatus for sensorless operation of brushless permanent magnet motors.  United States: N. p., 1998. 
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                    Sriram, T V. Method and apparatus for sensorless operation of brushless permanent magnet motors.  United States.

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                    Sriram, T V. Tue .  
        "Method and apparatus for sensorless operation of brushless permanent magnet motors".  United States.

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@article{osti_644392,

  title        = {Method and apparatus for sensorless operation of brushless permanent magnet motors},

  author       = {Sriram, T V},

  abstractNote = {A sensorless method and apparatus for providing commutation timing signals for a brushless permanent magnet motor extracts the third harmonic back-emf of a three-phase stator winding and independently cyclically integrates the positive and negative half-cycles thereof and compares the results to a reference level associated with a desired commutation angle. 23 figs.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1998},

  month        = {4}

}

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