CA1132186A - Slip frequency control for variable speed induction motors - Google Patents

Slip frequency control for variable speed induction motors

Info

Publication number
CA1132186A
CA1132186A CA346,775A CA346775A CA1132186A CA 1132186 A CA1132186 A CA 1132186A CA 346775 A CA346775 A CA 346775A CA 1132186 A CA1132186 A CA 1132186A
Authority
CA
Canada
Prior art keywords
signal
motor
gate
providing
pulse train
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.)
Expired
Application number
CA346,775A
Other languages
English (en)
French (fr)
Inventor
Robert J. Ehret
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.)
Beckman Coulter Inc
Original Assignee
Beckman Instruments 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 Beckman Instruments Inc filed Critical Beckman Instruments Inc
Application granted granted Critical
Publication of CA1132186A publication Critical patent/CA1132186A/en
Expired 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
    • H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
    • H02P23/08—Controlling based on slip frequency, e.g. adding slip frequency and speed proportional frequency

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Ac Motors In General (AREA)
CA346,775A 1979-03-14 1980-02-29 Slip frequency control for variable speed induction motors Expired CA1132186A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US20,389 1979-03-14
US06/020,389 US4286203A (en) 1979-03-14 1979-03-14 Slip frequency control for variable speed induction motors

Publications (1)

Publication Number Publication Date
CA1132186A true CA1132186A (en) 1982-09-21

Family

ID=21798370

Family Applications (1)

Application Number Title Priority Date Filing Date
CA346,775A Expired CA1132186A (en) 1979-03-14 1980-02-29 Slip frequency control for variable speed induction motors

Country Status (5)

Country Link
US (1) US4286203A (enExample)
EP (1) EP0017345B1 (enExample)
JP (1) JPS6031431Y2 (enExample)
CA (1) CA1132186A (enExample)
DE (1) DE3066071D1 (enExample)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5733355A (en) * 1980-08-06 1982-02-23 Toshiba Corp Digital speed detector
US4564795A (en) * 1981-12-21 1986-01-14 Beckman Instruments, Inc. Motor speed control system
US4438376A (en) 1981-12-24 1984-03-20 General Electric Company Variable slip controller for an AC motor
DE3211182C2 (de) * 1982-03-26 1986-06-26 Brown, Boveri & Cie Ag, 6800 Mannheim Verfahren zur Regelung des Drehmomentes einer Asynchronmaschine
US4459533A (en) * 1983-06-03 1984-07-10 Beckman Instruments, Inc. Variable slip drive system for induction motor
EP0232324A1 (en) * 1985-08-09 1987-08-19 Beckman Instruments, Inc. Overspeed protection signal override system for a centrifuge apparatus
US4940927A (en) * 1985-08-29 1990-07-10 Century Electric, Inc. Three-phase A-C speed control for variable torque motor
US4827197A (en) * 1987-05-22 1989-05-02 Beckman Instruments, Inc. Method and apparatus for overspeed protection for high speed centrifuges
CA2049123C (en) * 1990-09-13 2002-01-15 David T. Green Apparatus and method for subcuticular stapling of body tissue
US6087654A (en) * 1995-02-27 2000-07-11 Opto Generic Devices, Inc. Encoder apparatus and methods
CN1256571C (zh) * 1995-02-27 2006-05-17 奥普托普通装置有限公司 编码器装置和方法
US5926387A (en) * 1995-06-30 1999-07-20 Beckman Instruments, Inc. Ultracentrifuge operation by computer system
DE102007014659A1 (de) * 2007-03-27 2008-10-09 Siemens Ag Elektrische Antriebsmaschine
CN103221694B (zh) 2010-04-09 2015-07-29 希普斯通公司 用于能量存储和回收的系统和方法
US9611868B2 (en) 2010-04-09 2017-04-04 Shipstone Corporation System and method for energy storage and retrieval

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3368133A (en) * 1965-05-21 1968-02-06 Navy Usa Closed loop motor control
CH484566A (de) * 1967-12-20 1970-01-15 Bosch Gmbh Robert Einrichtung zum Addieren zweier Impulsfolgen
DE2120193C3 (de) * 1971-04-24 1982-02-04 Robert Bosch Gmbh, 7000 Stuttgart Digitale Schlupffrequenzregelschaltung für eine umrichtergespeiste Asynchronmaschine
JPS5063429A (enExample) * 1973-08-31 1975-05-29
US4042862A (en) * 1975-11-28 1977-08-16 Franklin Robert C Power control for variable speed induction motors

Also Published As

Publication number Publication date
DE3066071D1 (en) 1984-02-16
JPS55134799U (enExample) 1980-09-25
US4286203A (en) 1981-08-25
EP0017345A1 (en) 1980-10-15
EP0017345B1 (en) 1984-01-11
JPS6031431Y2 (ja) 1985-09-19

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Legal Events

Date Code Title Description
MKEX Expiry