GB201203911D0 - Sensorless control of a brushless permanent-magnet motor - Google Patents

Sensorless control of a brushless permanent-magnet motor

Info

Publication number
GB201203911D0
GB201203911D0 GBGB1203911.1A GB201203911A GB201203911D0 GB 201203911 D0 GB201203911 D0 GB 201203911D0 GB 201203911 A GB201203911 A GB 201203911A GB 201203911 D0 GB201203911 D0 GB 201203911D0
Authority
GB
United Kingdom
Prior art keywords
signal
back emf
voltage
bemf
controller
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
GBGB1203911.1A
Other versions
GB2500013A (en
GB2500013B (en
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.)
Dyson Technology Ltd
Original Assignee
Dyson Technology Ltd
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 Dyson Technology Ltd filed Critical Dyson Technology Ltd
Priority to GB1203911.1A priority Critical patent/GB2500013B/en
Publication of GB201203911D0 publication Critical patent/GB201203911D0/en
Priority to US13/786,119 priority patent/US9515588B2/en
Priority to US13/786,169 priority patent/US9088238B2/en
Priority to PCT/GB2013/050549 priority patent/WO2013132249A1/en
Priority to EP13709515.4A priority patent/EP2823558A1/en
Priority to JP2013062870A priority patent/JP2013188134A/en
Priority to KR1020147028116A priority patent/KR101650802B1/en
Priority to JP2013062869A priority patent/JP5749288B2/en
Priority to KR1020147027984A priority patent/KR101663147B1/en
Priority to CN201380024038.6A priority patent/CN104285370B/en
Priority to CN201380024002.8A priority patent/CN104285368B/en
Priority to GB1304017.5A priority patent/GB2501370B/en
Priority to EP13709517.0A priority patent/EP2823560A1/en
Priority to PCT/GB2013/050547 priority patent/WO2013132247A1/en
Publication of GB2500013A publication Critical patent/GB2500013A/en
Application granted granted Critical
Publication of GB2500013B publication Critical patent/GB2500013B/en
Priority to JP2017201008A priority patent/JP6375431B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • H02P6/08—Arrangements for controlling the speed or torque of a single motor
    • H02P6/085—Arrangements for controlling the speed or torque of a single motor in a bridge configuration
    • 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
    • H02P6/15—Controlling commutation time
    • H02P6/157—Controlling commutation time wherein the commutation is function of electro-magnetic force [EMF]
    • 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
    • H02P6/182—Circuit arrangements for detecting position without separate position detecting elements using back-emf in windings
    • 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
    • H02P6/26—Arrangements for controlling single phase motors

Abstract

A sensorless control system for determining the position of the rotor 5 of a brushless motor 3 comprises a back EMF sensor 12 and a controller 13. The back EMF sensor generates a digital signal BEMF that is output to the controller, where certain edges of the BEMF signal correspond to zero-crossing in the back EMF. The controller then commutates the phase winding 7 at times relative to these edges. The back EMF sensor comprises a voltage sensor, an amplifier, a differentiator, a low pass filter and a comparator. The back EMF sensor generates a first signal having a voltage that is proportional to a voltage across a winding of the motor, and a second signal having a voltage that is proportional to a current in the winding. The second signal is then differentiated to generate a third signal, and the voltages of the first signal and the third signal are compared. The output signal BEMF is generated in response to the comparison, the output signal having an edge whenever the voltages of the first signal and the third signal correspond.
GB1203911.1A 2012-03-06 2012-03-06 Sensorless control of a brushless permanent-magnet motor Active GB2500013B (en)

Priority Applications (15)

Application Number Priority Date Filing Date Title
GB1203911.1A GB2500013B (en) 2012-03-06 2012-03-06 Sensorless control of a brushless permanent-magnet motor
US13/786,119 US9515588B2 (en) 2012-03-06 2013-03-05 Sensorless control of a brushless permanent-magnet motor
US13/786,169 US9088238B2 (en) 2012-03-06 2013-03-05 Method of determining the rotor position of a permanent-magnet motor
KR1020147027984A KR101663147B1 (en) 2012-03-06 2013-03-06 Sensorless control of a brushless permanent-magnet motor
EP13709517.0A EP2823560A1 (en) 2012-03-06 2013-03-06 Method of determining the rotor position of a permanent-magnet motor
JP2013062870A JP2013188134A (en) 2012-03-06 2013-03-06 Method of determining rotor position of permanent-magnet motor
KR1020147028116A KR101650802B1 (en) 2012-03-06 2013-03-06 Method of determining the rotor position of a permanent-magnet motor
JP2013062869A JP5749288B2 (en) 2012-03-06 2013-03-06 Sensorless control of brushless permanent magnet motor
PCT/GB2013/050549 WO2013132249A1 (en) 2012-03-06 2013-03-06 Method of determining the rotor position of a permanent-magnet motor
CN201380024038.6A CN104285370B (en) 2012-03-06 2013-03-06 The sensorless strategy of brushless permanent magnet motor
CN201380024002.8A CN104285368B (en) 2012-03-06 2013-03-06 The method for determining the rotor-position of magneto
GB1304017.5A GB2501370B (en) 2012-03-06 2013-03-06 Method of determining the rotor position of a permanent-magnet motor
EP13709515.4A EP2823558A1 (en) 2012-03-06 2013-03-06 Sensorless control of a brushless permanent-magnet motor
PCT/GB2013/050547 WO2013132247A1 (en) 2012-03-06 2013-03-06 Sensorless control of a brushless permanent-magnet motor
JP2017201008A JP6375431B2 (en) 2012-03-06 2017-10-17 Method for determining rotor position of permanent magnet motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1203911.1A GB2500013B (en) 2012-03-06 2012-03-06 Sensorless control of a brushless permanent-magnet motor

Publications (3)

Publication Number Publication Date
GB201203911D0 true GB201203911D0 (en) 2012-04-18
GB2500013A GB2500013A (en) 2013-09-11
GB2500013B GB2500013B (en) 2014-06-11

Family

ID=46003189

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1203911.1A Active GB2500013B (en) 2012-03-06 2012-03-06 Sensorless control of a brushless permanent-magnet motor

Country Status (1)

Country Link
GB (1) GB2500013B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112400274A (en) * 2018-07-17 2021-02-23 戴森技术有限公司 Method for controlling brushless permanent magnet motor
CN113131806A (en) * 2019-12-31 2021-07-16 广东美的白色家电技术创新中心有限公司 Control device and method of brushless direct current motor
CN113661648A (en) * 2019-03-28 2021-11-16 戴森技术有限公司 Method for determining the position of the rotor of a brushless permanent magnet motor

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2515086B (en) 2013-06-13 2015-10-07 Dyson Technology Ltd Method of controlling of a brushless permanent-magnet motor
GB2515087B (en) * 2013-06-13 2017-03-22 Dyson Technology Ltd Method of controlling of a brushless permanent-magnet motor
GB201310575D0 (en) 2013-06-13 2013-07-31 Dyson Technology Ltd Method of controllinf of a brushless permanent-magnet motor
US9431938B2 (en) 2013-06-13 2016-08-30 Dyson Technology Limited Method of controlling a brushless permanent-magnet motor
KR102347842B1 (en) * 2019-08-22 2022-01-05 엘지전자 주식회사 Method and Apparatus For Detecting Rotor Magnetic Pole Position In A Single-Phase BLDC Motor
US20230327588A1 (en) * 2022-03-28 2023-10-12 Power Integrations, Inc. Motor alignment control

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5600218A (en) * 1995-09-11 1997-02-04 George H. Holling Sensorless commutation position detection for brushless motors
KR101446662B1 (en) * 2010-10-05 2014-10-01 다이슨 테크놀러지 리미티드 Control of an electrical machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112400274A (en) * 2018-07-17 2021-02-23 戴森技术有限公司 Method for controlling brushless permanent magnet motor
CN112400274B (en) * 2018-07-17 2024-04-09 戴森技术有限公司 Method for controlling brushless permanent magnet motor
CN113661648A (en) * 2019-03-28 2021-11-16 戴森技术有限公司 Method for determining the position of the rotor of a brushless permanent magnet motor
CN113131806A (en) * 2019-12-31 2021-07-16 广东美的白色家电技术创新中心有限公司 Control device and method of brushless direct current motor

Also Published As

Publication number Publication date
GB2500013A (en) 2013-09-11
GB2500013B (en) 2014-06-11

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