JPS5743585A - Slip angle frequency calculating device for induction motor - Google Patents

Slip angle frequency calculating device for induction motor

Info

Publication number
JPS5743585A
JPS5743585A JP55117882A JP11788280A JPS5743585A JP S5743585 A JPS5743585 A JP S5743585A JP 55117882 A JP55117882 A JP 55117882A JP 11788280 A JP11788280 A JP 11788280A JP S5743585 A JPS5743585 A JP S5743585A
Authority
JP
Japan
Prior art keywords
angle frequency
slip angle
calculating device
square number
omegas
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.)
Pending
Application number
JP55117882A
Other languages
Japanese (ja)
Inventor
Seiji Nakazawa
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.)
Meidensha Corp
Meidensha Electric Manufacturing Co Ltd
Original Assignee
Meidensha Corp
Meidensha Electric Manufacturing Co 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 Meidensha Corp, Meidensha Electric Manufacturing Co Ltd filed Critical Meidensha Corp
Priority to JP55117882A priority Critical patent/JPS5743585A/en
Publication of JPS5743585A publication Critical patent/JPS5743585A/en
Pending 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)

Abstract

PURPOSE:To obtain a slip angle frequency calculating device for induction motor using a small time constant, by calculating slip angle frequency by using a calcalculation formula of small time constant on the basis of a power source angle frequency, a square number of a primary current, an effective power and an inducted voltage. CONSTITUTION:On the basis of a line voltage, a line curent and an inducted voltage, an effective power P, a power source angle frequency omega0 and its square number omega0<2>, a square number i of a primary current i1 and a square number vm<2> of an inducted voltage vm are calculated. By putting these numbers into a calculating device consisting of multipliers 18a and 18b, a signal inverting circuit 16, time constant generating circuits 20a-20d and a divider 22, a slip angle frequency omegas is sought. omegas is calculated by using an equation omegas=[r2omega0M(M+2L2)P]/ [(L2+M)<2>Vm<2>-omegao<2>M<2>L2<2>i1<2>] (wherein, M represents a mutual inductance, a secondary leak inductance and r2 a secondary resistance.
JP55117882A 1980-08-27 1980-08-27 Slip angle frequency calculating device for induction motor Pending JPS5743585A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55117882A JPS5743585A (en) 1980-08-27 1980-08-27 Slip angle frequency calculating device for induction motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55117882A JPS5743585A (en) 1980-08-27 1980-08-27 Slip angle frequency calculating device for induction motor

Publications (1)

Publication Number Publication Date
JPS5743585A true JPS5743585A (en) 1982-03-11

Family

ID=14722565

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55117882A Pending JPS5743585A (en) 1980-08-27 1980-08-27 Slip angle frequency calculating device for induction motor

Country Status (1)

Country Link
JP (1) JPS5743585A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5288828A (en) * 1993-03-08 1994-02-22 The Sherwin-Williams Company Dispersant polymers
US5302629A (en) * 1992-05-15 1994-04-12 Berejka Anthony J Hydrophilic acrylic pressure sensitive adhesives
US7273378B2 (en) 2003-09-19 2007-09-25 Mitsumi Electric Co., Ltd. Connecting device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5302629A (en) * 1992-05-15 1994-04-12 Berejka Anthony J Hydrophilic acrylic pressure sensitive adhesives
US5288828A (en) * 1993-03-08 1994-02-22 The Sherwin-Williams Company Dispersant polymers
US5360856A (en) * 1993-03-08 1994-11-01 The Sherwin-Williams Company Dispersant polymers
US5430089A (en) * 1993-03-08 1995-07-04 The Sherwin-Williams Company Dispersant polymers
US5554682A (en) * 1993-03-08 1996-09-10 The Sherwin-Williams Company Dispersant polymers
US7273378B2 (en) 2003-09-19 2007-09-25 Mitsumi Electric Co., Ltd. Connecting device

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