CA2060625A1 - Switched reluctance motor position by resonant signal injection - Google Patents

Switched reluctance motor position by resonant signal injection

Info

Publication number
CA2060625A1
CA2060625A1 CA002060625A CA2060625A CA2060625A1 CA 2060625 A1 CA2060625 A1 CA 2060625A1 CA 002060625 A CA002060625 A CA 002060625A CA 2060625 A CA2060625 A CA 2060625A CA 2060625 A1 CA2060625 A1 CA 2060625A1
Authority
CA
Canada
Prior art keywords
tank circuit
phase winding
frequency
rotor
phase
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002060625A
Other languages
French (fr)
Other versions
CA2060625C (en
Inventor
Jay R. Goetz
William A. Harris
Kevin J. Stalsberg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honeywell Inc
Original Assignee
Jay R. Goetz
William A. Harris
Kevin J. Stalsberg
Honeywell Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jay R. Goetz, William A. Harris, Kevin J. Stalsberg, Honeywell Inc. filed Critical Jay R. Goetz
Publication of CA2060625A1 publication Critical patent/CA2060625A1/en
Application granted granted Critical
Publication of CA2060625C publication Critical patent/CA2060625C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
    • H02P6/14—Electronic commutators
    • H02P6/16—Circuit arrangements for detecting position
    • H02P6/18—Circuit arrangements for detecting position without separate position detecting elements
    • H02P6/185—Circuit arrangements for detecting position without separate position detecting elements using inductance sensing, e.g. pulse excitation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
    • H02P25/02—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the kind of motor
    • H02P25/08—Reluctance motors
    • H02P25/086—Commutation
    • H02P25/089—Sensorless control

Abstract

An apparatus is provided far estimating the position of a rotor of a commutated brushless motor operating without a shaft position sensor. The apparatus includes a tank circuit that incorporates a phase winding of the motor. A low-power signal of a frequency F1 is injected into the tank circuit. The frequency F1 is much greater than the switching frequency F s of the phase winding.
Because the effective inductance (L) of the phase winding incorporated into the tank circuit changes in a cyclic manner in response to changes in the mechanical angle .THETA. of the rotor, the characteristic resonant frequency F0 of the tank circuit varies between maximum and minimum values.
The effect of the variation of the resonant frequency F0 on the output characteristics of the tank circuit are used by a detection circuit to resolve the mechanical angle .THETA.
of the rotor and, thereby, control the timing of the phase firing sequence. The two illustrated embodiments detect changes to the amplitude and phase, respectively, of the signal from the tank circuit in response to the changing inductance of the phase winding incorporated into the tank circuit.
CA002060625A 1991-02-20 1992-02-04 Switched reluctance motor position by resonant signal injection Expired - Lifetime CA2060625C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/658482 1991-02-20
US07/658,482 US5196775A (en) 1991-02-20 1991-02-20 Switched reluctance motor position by resonant signal injection

Publications (2)

Publication Number Publication Date
CA2060625A1 true CA2060625A1 (en) 1992-08-21
CA2060625C CA2060625C (en) 2001-03-13

Family

ID=24641418

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002060625A Expired - Lifetime CA2060625C (en) 1991-02-20 1992-02-04 Switched reluctance motor position by resonant signal injection

Country Status (5)

Country Link
US (1) US5196775A (en)
EP (2) EP0720283B1 (en)
JP (1) JP3366662B2 (en)
CA (1) CA2060625C (en)
DE (2) DE69227929T2 (en)

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Also Published As

Publication number Publication date
EP0720283B1 (en) 1998-12-16
EP0720283A2 (en) 1996-07-03
EP0500295A1 (en) 1992-08-26
EP0500295B1 (en) 1997-07-02
US5196775A (en) 1993-03-23
JPH06189580A (en) 1994-07-08
CA2060625C (en) 2001-03-13
DE69227929T2 (en) 1999-07-01
JP3366662B2 (en) 2003-01-14
EP0720283A3 (en) 1996-07-31
DE69220589T2 (en) 1997-12-04
DE69220589D1 (en) 1997-08-07
DE69227929D1 (en) 1999-01-28

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Legal Events

Date Code Title Description
EEER Examination request
MKLC Lapsed (correction)
MKEX Expiry