CA2036699A1 - Multilevel phase unbalance compressor motor protection system - Google Patents

Multilevel phase unbalance compressor motor protection system

Info

Publication number
CA2036699A1
CA2036699A1 CA2036699A CA2036699A CA2036699A1 CA 2036699 A1 CA2036699 A1 CA 2036699A1 CA 2036699 A CA2036699 A CA 2036699A CA 2036699 A CA2036699 A CA 2036699A CA 2036699 A1 CA2036699 A1 CA 2036699A1
Authority
CA
Canada
Prior art keywords
level
phase
compressor motor
protection
phase unbalance
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
CA2036699A
Other languages
French (fr)
Other versions
CA2036699C (en
Inventor
Robert M. Swanson
Paul C. Rentmeester
David M. Foye
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.)
Trane International Inc
Original Assignee
Wabco Standard Trane 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 Wabco Standard Trane Inc filed Critical Wabco Standard Trane Inc
Publication of CA2036699A1 publication Critical patent/CA2036699A1/en
Application granted granted Critical
Publication of CA2036699C publication Critical patent/CA2036699C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
    • H02H7/09—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against over-voltage; against reduction of voltage; against phase interruption

Abstract

Title MULTILEVEL PHASE UNBALANCE
COMPRESSOR MOTOR PROTECTION SYSTEM

Inventor ROBERT M. SWANSON
PAUL C. RENTMEESTER
DAVID M. FOYE

Abstract A method of protecting the compressor motor of a refrigeration system using a multiphase AC power source. The method comprises the steps of monitoring each phase of the power supply to the compressor motor; calculating an average phase for the phases of the AC power supply; determining a maximum phase unbalance deviation from the average phase;
determining if a first level of phase unbalance protection is active; setting a system protection level as the first level of phase unbalance protection if the first level is active;
setting the system protection level as a second higher level of phase unbalance protection if the first level is not active;
and initiating a compressor motor shutdown if the system protection level is exceeded by the maximum unbalanced phase deviation.
CA002036699A 1990-03-30 1991-02-20 Multilevel phase unbalance compressor motor protection system Expired - Lifetime CA2036699C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/502,355 US5058031A (en) 1990-03-30 1990-03-30 Multilevel phase unbalance compressor motor protection system
US07/502,355 1990-03-30

Publications (2)

Publication Number Publication Date
CA2036699A1 true CA2036699A1 (en) 1991-10-01
CA2036699C CA2036699C (en) 1994-05-31

Family

ID=23997441

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002036699A Expired - Lifetime CA2036699C (en) 1990-03-30 1991-02-20 Multilevel phase unbalance compressor motor protection system

Country Status (2)

Country Link
US (1) US5058031A (en)
CA (1) CA2036699C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112310944A (en) * 2019-07-30 2021-02-02 上海海立电器有限公司 Compressor protection method and compressor drive controller

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5478164A (en) * 1991-10-16 1995-12-26 Alps Electric Co., Ltd. Method of driving DC motor in printer
US5434738A (en) * 1993-07-12 1995-07-18 American Standard Inc. Apparatus and method for protecting induction motors from momentary power loss
US5355691A (en) * 1993-08-16 1994-10-18 American Standard Inc. Control method and apparatus for a centrifugal chiller using a variable speed impeller motor drive
US5537830A (en) * 1994-11-28 1996-07-23 American Standard Inc. Control method and appartus for a centrifugal chiller using a variable speed impeller motor drive
US5632154A (en) * 1995-02-28 1997-05-27 American Standard Inc. Feed forward control of expansion valve
SE517383C2 (en) * 2001-06-05 2002-06-04 Volvo Lastvagnar Ab Pressurized gas supply system and method for verifying whether a compressor operates in a pressurized gas supply system
US20050171608A1 (en) * 2004-01-09 2005-08-04 Sdgi Holdings, Inc. Centrally articulating spinal device and method
DE102010037396A1 (en) * 2010-09-08 2012-03-08 Phoenix Contact Gmbh & Co. Kg Method and device for detecting current asymmetry in three-phase networks
KR101798689B1 (en) * 2013-12-05 2017-11-16 엘에스산전 주식회사 Power device including current transformer and method for compensating of current trnasformer

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Publication number Priority date Publication date Assignee Title
US3633073A (en) * 1969-12-05 1972-01-04 Borg Warner Overload and overcurrent regulation and protection system
US3619722A (en) * 1970-05-04 1971-11-09 Acme Ind Inc Refrigeration protective system
US3742303A (en) * 1971-11-08 1973-06-26 Bec Prod Inc Compressor protector system
US4132085A (en) * 1973-06-20 1979-01-02 Hitachi, Ltd. Control apparatus including an electronic timer
ZA765929B (en) * 1975-10-28 1977-09-28 Carrier Corp Protection system for electric motor
US4038061A (en) * 1975-12-29 1977-07-26 Heil-Quaker Corporation Air conditioner control
US4034570A (en) * 1975-12-29 1977-07-12 Heil-Quaker Corporation Air conditioner control
US4363065A (en) * 1979-02-08 1982-12-07 Uohiko Hasegawa Interphase unbalance detector for AC load circuit
US4319298A (en) * 1979-08-28 1982-03-09 General Electric Company Motor protection device
US4307775A (en) * 1979-11-19 1981-12-29 The Trane Company Current monitoring control for electrically powered devices
US4434390A (en) * 1982-01-15 1984-02-28 Westinghouse Electric Corp. Motor control apparatus with parallel input, serial output signal conditioning means
CA1193316A (en) * 1982-05-07 1985-09-10 David R. Boothman Motor protection apparatus
JPS59231344A (en) * 1983-06-15 1984-12-26 Hitachi Ltd Control circuit for air conditioner
US4514989A (en) * 1984-05-14 1985-05-07 Carrier Corporation Method and control system for protecting an electric motor driven compressor in a refrigeration system
US4722059A (en) * 1985-04-19 1988-01-26 Westinghouse Electric Corp. Programmed overcurrent protection control apparatus and method of operating the same
US4751653A (en) * 1986-08-25 1988-06-14 American Standard Inc. Fault detector for a three-phase alternating current supply
US4827369A (en) * 1987-02-20 1989-05-02 Westinghouse Electric Corp. Circuit interrupter apparatus with a selectable display means
US4802053A (en) * 1987-03-11 1989-01-31 Square D Company Control circuitry including phase failure relay
US4935685A (en) * 1987-08-12 1990-06-19 Sargent Oil Well Equipment Company Motor controller for pumping units
US4996646A (en) * 1988-03-31 1991-02-26 Square D Company Microprocessor-controlled circuit breaker and system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112310944A (en) * 2019-07-30 2021-02-02 上海海立电器有限公司 Compressor protection method and compressor drive controller

Also Published As

Publication number Publication date
US5058031A (en) 1991-10-15
CA2036699C (en) 1994-05-31

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Legal Events

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EEER Examination request
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