JPS5755778A - Phase-reversal detection circuit - Google Patents

Phase-reversal detection circuit

Info

Publication number
JPS5755778A
JPS5755778A JP55131055A JP13105580A JPS5755778A JP S5755778 A JPS5755778 A JP S5755778A JP 55131055 A JP55131055 A JP 55131055A JP 13105580 A JP13105580 A JP 13105580A JP S5755778 A JPS5755778 A JP S5755778A
Authority
JP
Japan
Prior art keywords
output
phase
reverse
current
maximum value
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
JP55131055A
Other languages
Japanese (ja)
Inventor
Mitsuo Yonemori
Hiroshi Okamoto
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.)
Omron Corp
Original Assignee
Tateisi Electronics Co
Omron Tateisi Electronics Co
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 Tateisi Electronics Co, Omron Tateisi Electronics Co filed Critical Tateisi Electronics Co
Priority to JP55131055A priority Critical patent/JPS5755778A/en
Publication of JPS5755778A publication Critical patent/JPS5755778A/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
    • H02P23/24—Controlling the direction, e.g. clockwise or counterclockwise

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor And Converter Starters (AREA)

Abstract

PURPOSE:To prevent mulfunction due to electrical noise, by a method wherein reverse phase detection is performed by a motor current having small waveform distortion for a fixed period after turning on a power source and a reverse-phase detection signal is sent out only when judgement is made as reverse phase for several continuous cycles. CONSTITUTION:Rectifier circuits 4-6 are connected to the current transformers 1-3 of a main three-phase circuit and the output is fed into a maximum value detection circuit 7. And the output is connected to the CL terminal of a binary counter 12 and detection output is also obtained by operating a D type flip flop 18 by the output in the maximum value detection circuit 7 and the outputs in operaional amplifiers 9, 10 connected to current transformers 1, 2. Therefore, fixed time after arriving of the maximum value of the main circuit current at a predetermined value or over after turning on a power source is specified by the counter and the timing of each phase current is compared for this time only and multifunction due to noise can be eliminated by sending out a reverse-phase detection output when the output continues for more than fixed time.
JP55131055A 1980-09-20 1980-09-20 Phase-reversal detection circuit Pending JPS5755778A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55131055A JPS5755778A (en) 1980-09-20 1980-09-20 Phase-reversal detection circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55131055A JPS5755778A (en) 1980-09-20 1980-09-20 Phase-reversal detection circuit

Publications (1)

Publication Number Publication Date
JPS5755778A true JPS5755778A (en) 1982-04-02

Family

ID=15048951

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55131055A Pending JPS5755778A (en) 1980-09-20 1980-09-20 Phase-reversal detection circuit

Country Status (1)

Country Link
JP (1) JPS5755778A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6066676A (en) * 1983-09-21 1985-04-16 Mitsubishi Electric Corp Drive device for sewing machine
US6506030B1 (en) 1999-01-05 2003-01-14 Air Products And Chemicals, Inc. Reciprocating pumps with linear motor driver
WO2006019879A3 (en) * 2004-07-16 2006-10-26 Carrier Corp Phase correction method and apparatus
US20130162177A1 (en) * 2010-09-15 2013-06-27 Gilbert B. Hofsdal Method for Determining Proper Wiring of Multiple 3 Phase Motors in a Single System

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6066676A (en) * 1983-09-21 1985-04-16 Mitsubishi Electric Corp Drive device for sewing machine
JPH0154956B2 (en) * 1983-09-21 1989-11-21 Mitsubishi Electric Corp
US6506030B1 (en) 1999-01-05 2003-01-14 Air Products And Chemicals, Inc. Reciprocating pumps with linear motor driver
WO2006019879A3 (en) * 2004-07-16 2006-10-26 Carrier Corp Phase correction method and apparatus
US7134290B2 (en) * 2004-07-16 2006-11-14 Carrier Corporation Phase correction method and apparatus
US20130162177A1 (en) * 2010-09-15 2013-06-27 Gilbert B. Hofsdal Method for Determining Proper Wiring of Multiple 3 Phase Motors in a Single System
US9228767B2 (en) * 2010-09-15 2016-01-05 Carrier Corporation Method for determining proper wiring of multiple 3 phase motors in a single system

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