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Title: State observer for synchronous motors

Abstract

A state observer driven by measurements of phase voltages and currents for estimating the angular orientation of a rotor of a synchronous motor such as a variable reluctance motor (VRM). Phase voltages and currents are detected and serve as inputs to a state observer. The state observer includes a mathematical model of the electromechanical operation of the synchronous motor. The characteristics of the state observer are selected so that the observer estimates converge to the actual rotor angular orientation and velocity, winding phase flux linkages or currents.

Inventors:
 [1]
  1. Waltham, MA
Issue Date:
Research Org.:
AEROSPACE CORP
OSTI Identifier:
869205
Patent Number(s):
5296793
Application Number:
06/927,532
Assignee:
Massachusetts Institute of Technology (Cambridge, MA)
Patent Classifications (CPCs):
H - ELECTRICITY H02 - GENERATION H02P - CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS
DOE Contract Number:  
AC08-80CS50101
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
observer; synchronous; motors; driven; measurements; phase; voltages; currents; estimating; angular; orientation; rotor; motor; variable; reluctance; vrm; detected; serve; inputs; mathematical; model; electromechanical; operation; characteristics; selected; estimates; converge; velocity; winding; flux; linkages; synchronous motor; mathematical model; angular orientation; phase voltages; /318/

Citation Formats

Lang, Jeffrey H. State observer for synchronous motors. United States: N. p., 1994. Web.
Lang, Jeffrey H. State observer for synchronous motors. United States.
Lang, Jeffrey H. Sat . "State observer for synchronous motors". United States. https://www.osti.gov/servlets/purl/869205.
@article{osti_869205,
title = {State observer for synchronous motors},
author = {Lang, Jeffrey H},
abstractNote = {A state observer driven by measurements of phase voltages and currents for estimating the angular orientation of a rotor of a synchronous motor such as a variable reluctance motor (VRM). Phase voltages and currents are detected and serve as inputs to a state observer. The state observer includes a mathematical model of the electromechanical operation of the synchronous motor. The characteristics of the state observer are selected so that the observer estimates converge to the actual rotor angular orientation and velocity, winding phase flux linkages or currents.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Jan 01 00:00:00 EST 1994},
month = {Sat Jan 01 00:00:00 EST 1994}
}

Works referenced in this record:

Stabilization of Controlled Current Induction Motor Drive Systems via New Nonlinear State Observer
journal, May 1980


An introduction to observers
journal, December 1971


Observers for faster flux estimation in induction machines
conference, June 1985


Dynamic Systems.
report, December 1979


Exponential observers for nonlinear dynamic systems
journal, November 1975


State observers for variable-reluctance motors
journal, April 1990


Detection of Rotor Position in Stepping and Switched Motors by Monitoring of Current Waveforms
journal, August 1985


Observing the state of non-linear dynamic systems
journal, March 1973


Nonlinear Observers with Linearizable Error Dynamics
journal, March 1985


Canonical form observer design for non-linear time-variable systems
journal, August 1983


A State Observer for Variable Reluctance Motors: Analysis and Experiments
conference, January 1985