JPS6470807A - Device for compensating reactive power - Google Patents

Device for compensating reactive power

Info

Publication number
JPS6470807A
JPS6470807A JP22804487A JP22804487A JPS6470807A JP S6470807 A JPS6470807 A JP S6470807A JP 22804487 A JP22804487 A JP 22804487A JP 22804487 A JP22804487 A JP 22804487A JP S6470807 A JPS6470807 A JP S6470807A
Authority
JP
Japan
Prior art keywords
signal
voltage
outputted
inputted
reactive power
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
JP22804487A
Other languages
Japanese (ja)
Inventor
Masaaki Ono
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 JP22804487A priority Critical patent/JPS6470807A/en
Publication of JPS6470807A publication Critical patent/JPS6470807A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/36—Nc in input of data, input key till input tape
    • G05B2219/36071—Simulate on screen, if operation value out of limits, edit program

Landscapes

  • Control Of Electrical Variables (AREA)

Abstract

PURPOSE:To obtain a device prevented from being affected by the variation of pressure by shifting the phase of a voltage signal by pi/2 to fix the voltage by a voltage fixing circuit and obtaining a reactive power compensating value from the product of a DC component of the produce of the fixed voltage signal and a current signal and the fixed voltage signal to control a control circuit. CONSTITUTION:The phase of a voltage signal V is shifted by pi/2 through a phase shifter 4 and outputted as an output signal A. The signal A is outputted from a voltage fixing circuit 5 as a fixed voltage signal B and the signal B is inputted to a multiplier 6 together with a current signal I. The product of the signal I and the signal B is inputted to a filter 7 and only a DC component is outputted as a signal C. The signal C is inputted to a multiplier 8 together with the signal B and the product of these signals B, C is outputted as a reactive power compensating command value D. The signal D from the multiplier 8 is inputted to a control circuit in an inverter part shown in the following diagram, reactive power necessary for a load 2 is supplied by controlling the inverter and only active power necessary for the load 2 is supplied from a power supply 1.
JP22804487A 1987-09-11 1987-09-11 Device for compensating reactive power Pending JPS6470807A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22804487A JPS6470807A (en) 1987-09-11 1987-09-11 Device for compensating reactive power

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22804487A JPS6470807A (en) 1987-09-11 1987-09-11 Device for compensating reactive power

Publications (1)

Publication Number Publication Date
JPS6470807A true JPS6470807A (en) 1989-03-16

Family

ID=16870320

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22804487A Pending JPS6470807A (en) 1987-09-11 1987-09-11 Device for compensating reactive power

Country Status (1)

Country Link
JP (1) JPS6470807A (en)

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