JPS5698371A - Polyphase ac inverter - Google Patents

Polyphase ac inverter

Info

Publication number
JPS5698371A
JPS5698371A JP17358779A JP17358779A JPS5698371A JP S5698371 A JPS5698371 A JP S5698371A JP 17358779 A JP17358779 A JP 17358779A JP 17358779 A JP17358779 A JP 17358779A JP S5698371 A JPS5698371 A JP S5698371A
Authority
JP
Japan
Prior art keywords
output
polyphase
voltage
converter
positive
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.)
Granted
Application number
JP17358779A
Other languages
Japanese (ja)
Other versions
JPS5943912B2 (en
Inventor
Kenichi Okamoto
Masaru Ohori
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric 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 Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP54173587A priority Critical patent/JPS5943912B2/en
Publication of JPS5698371A publication Critical patent/JPS5698371A/en
Publication of JPS5943912B2 publication Critical patent/JPS5943912B2/en
Expired 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 eliminate the unnecessary peak current at an output transformer for the positive and negative polarities of the output voltage in the polyphase AC inverter by storing voltage information during a half cycle period of the polyphase AC in a memory, reading it and driving the output circuit of the inverter. CONSTITUTION:The memory 1 storing the voltage information during half cycle period of the polyphase Ac is read by a counter 2, the information is applied to a D/A converter 3, the output from the converter 3 is applied to a comparator 8, which compares it with a signal from a triangular wave oscillator 9 to produce a pulse according to a pulse width modulation system, and the converter 3 is controlled in response to the output voltage and the set voltage by the control circuit 6. Subsequently, a switching circuit 12 is driven through a polarity discriminator 11 to produce an output. Since the positive and negative half cycles are stored in the same address in the memory as common voltage information, the output voltage becomes symmetrical at both the positive and the negative, thereby preventing the drawback of flowing a peak current.
JP54173587A 1979-12-29 1979-12-29 Polyphase AC inverter Expired JPS5943912B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54173587A JPS5943912B2 (en) 1979-12-29 1979-12-29 Polyphase AC inverter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54173587A JPS5943912B2 (en) 1979-12-29 1979-12-29 Polyphase AC inverter

Publications (2)

Publication Number Publication Date
JPS5698371A true JPS5698371A (en) 1981-08-07
JPS5943912B2 JPS5943912B2 (en) 1984-10-25

Family

ID=15963337

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54173587A Expired JPS5943912B2 (en) 1979-12-29 1979-12-29 Polyphase AC inverter

Country Status (1)

Country Link
JP (1) JPS5943912B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS589093U (en) * 1981-07-09 1983-01-20 株式会社明電舎 Pulse width modulation inverter
JPS5846871A (en) * 1981-09-12 1983-03-18 Nippon Electric Ind Co Ltd Controlling circuit for inverter
JPS5887491U (en) * 1981-12-04 1983-06-14 株式会社明電舎 Control device for pulse width modulation type inverter
JPS58222785A (en) * 1982-06-15 1983-12-24 Mitsubishi Electric Corp Energization command generator for power converter
JPS6096179A (en) * 1983-10-28 1985-05-29 Hitachi Ltd Controller of pulse width modulation inverter

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS589093U (en) * 1981-07-09 1983-01-20 株式会社明電舎 Pulse width modulation inverter
JPS5846871A (en) * 1981-09-12 1983-03-18 Nippon Electric Ind Co Ltd Controlling circuit for inverter
JPS5887491U (en) * 1981-12-04 1983-06-14 株式会社明電舎 Control device for pulse width modulation type inverter
JPS58222785A (en) * 1982-06-15 1983-12-24 Mitsubishi Electric Corp Energization command generator for power converter
JPS6096179A (en) * 1983-10-28 1985-05-29 Hitachi Ltd Controller of pulse width modulation inverter

Also Published As

Publication number Publication date
JPS5943912B2 (en) 1984-10-25

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