JPS5713975A - Control of output voltage for polyphase inverter - Google Patents

Control of output voltage for polyphase inverter

Info

Publication number
JPS5713975A
JPS5713975A JP8699880A JP8699880A JPS5713975A JP S5713975 A JPS5713975 A JP S5713975A JP 8699880 A JP8699880 A JP 8699880A JP 8699880 A JP8699880 A JP 8699880A JP S5713975 A JPS5713975 A JP S5713975A
Authority
JP
Japan
Prior art keywords
voltage
phases
inverter
unbalance
control
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
JP8699880A
Other languages
Japanese (ja)
Inventor
Takao Kawabata
Toru Nakamura
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP8699880A priority Critical patent/JPS5713975A/en
Publication of JPS5713975A publication Critical patent/JPS5713975A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inverter Devices (AREA)

Abstract

PURPOSE:To dissolve unbalance of output voltages of a polyphase inverter to an unbalance load by a method wherein output currents of the polyphase inverter are detected at every phases, and the IR compensations are performed respectively. CONSTITUTION:Currents of respective phases detected by current transformers 4U, 4V, 4W are converted into voltages by current-voltage converting circuts 11U, 11V, 11W, and are outputted as voltage compensating singals. Output voltages of the inverter 1 are detected by a detecting circuit 3 and are averaged between respective phases, and is fed back VF to a differential amplifier 6' as a DC voltage proportional to the average value, and the difference between the reference voltage signal VR is checked to be outputted as a voltage control signal. Every phases voltage control signals from computing elements 12U, 12V, 12W are transferred to an A/D converter 8 through analog switches A.S' s. A control signal outputted from the A/D converter 8 is performed with the IR compensation at every phases by a PWM control circuit 9 to control the inverter 1. Accordingly unbalance of output voltage to be fed to the unbalance load can be dissolved.
JP8699880A 1980-06-23 1980-06-23 Control of output voltage for polyphase inverter Pending JPS5713975A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8699880A JPS5713975A (en) 1980-06-23 1980-06-23 Control of output voltage for polyphase inverter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8699880A JPS5713975A (en) 1980-06-23 1980-06-23 Control of output voltage for polyphase inverter

Publications (1)

Publication Number Publication Date
JPS5713975A true JPS5713975A (en) 1982-01-25

Family

ID=13902536

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8699880A Pending JPS5713975A (en) 1980-06-23 1980-06-23 Control of output voltage for polyphase inverter

Country Status (1)

Country Link
JP (1) JPS5713975A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60216772A (en) * 1984-04-11 1985-10-30 Fuji Electric Co Ltd Abnormal voltage detector of power converter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60216772A (en) * 1984-04-11 1985-10-30 Fuji Electric Co Ltd Abnormal voltage detector of power converter

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