JPS56132173A - Detection method for element current on voltage-type pulse width modulation-system conversion device - Google Patents

Detection method for element current on voltage-type pulse width modulation-system conversion device

Info

Publication number
JPS56132173A
JPS56132173A JP3409980A JP3409980A JPS56132173A JP S56132173 A JPS56132173 A JP S56132173A JP 3409980 A JP3409980 A JP 3409980A JP 3409980 A JP3409980 A JP 3409980A JP S56132173 A JPS56132173 A JP S56132173A
Authority
JP
Japan
Prior art keywords
signal
voltage
output
element current
pulse width
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
JP3409980A
Other languages
Japanese (ja)
Inventor
Toshiaki Okuyama
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP3409980A priority Critical patent/JPS56132173A/en
Publication of JPS56132173A publication Critical patent/JPS56132173A/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)
  • Control Of Ac Motors In General (AREA)

Abstract

PURPOSE:To make possible use of any element of proper capacity by inputting an AC output current and a voltage command signal to an element current detector consisting of a multiplier and an adder and detecting currents on a thyrister and a diode separately. CONSTITUTION:An output from a converter 12 with plural thyristers and diodes connected in antiparallel and a voltage command signal obtained from a frequency command circuit 32 through a multiplier 26 are input to an element current detector 28. Then the first signal proportional to an output current and the second signal which is a product of a signal proportional to the first signal and a converter output voltage and a signal 3 being a function of a phase difference between an output voltage and an output current are processed by the detector 28 at a prearranged ratio under an addition a subtraction formula. Consequently it is possible to detect electric currents flowing through a thyrister and a diode separately, so that cost can be reduced by properly setting the capacity of each element.
JP3409980A 1980-03-19 1980-03-19 Detection method for element current on voltage-type pulse width modulation-system conversion device Pending JPS56132173A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3409980A JPS56132173A (en) 1980-03-19 1980-03-19 Detection method for element current on voltage-type pulse width modulation-system conversion device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3409980A JPS56132173A (en) 1980-03-19 1980-03-19 Detection method for element current on voltage-type pulse width modulation-system conversion device

Publications (1)

Publication Number Publication Date
JPS56132173A true JPS56132173A (en) 1981-10-16

Family

ID=12404823

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3409980A Pending JPS56132173A (en) 1980-03-19 1980-03-19 Detection method for element current on voltage-type pulse width modulation-system conversion device

Country Status (1)

Country Link
JP (1) JPS56132173A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007015637A (en) * 2005-07-11 2007-01-25 Mazda Motor Corp Lower vehicle body structure for slide door vehicle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007015637A (en) * 2005-07-11 2007-01-25 Mazda Motor Corp Lower vehicle body structure for slide door vehicle

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