JPS5889070A - Pwm inverter - Google Patents

Pwm inverter

Info

Publication number
JPS5889070A
JPS5889070A JP56186795A JP18679581A JPS5889070A JP S5889070 A JPS5889070 A JP S5889070A JP 56186795 A JP56186795 A JP 56186795A JP 18679581 A JP18679581 A JP 18679581A JP S5889070 A JPS5889070 A JP S5889070A
Authority
JP
Japan
Prior art keywords
signal
carrier
inverter
generator
outputs
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
JP56186795A
Other languages
Japanese (ja)
Other versions
JPH0379959B2 (en
Inventor
Koji Miki
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 Engineering Co Ltd
Hitachi Ltd
Original Assignee
Hitachi Engineering Co Ltd
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 Engineering Co Ltd, Hitachi Ltd filed Critical Hitachi Engineering Co Ltd
Priority to JP56186795A priority Critical patent/JPH0379959B2/ja
Publication of JPS5889070A publication Critical patent/JPS5889070A/en
Publication of JPH0379959B2 publication Critical patent/JPH0379959B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS 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
    • H02M7/00Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48Conversion 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

Abstract

PURPOSE:To reduce magnetic sound by always varying at timing the frequency of a carrier used to control the output of a PWM inverter, thereby suppressing the growth of mechanical resonance. CONSTITUTION:A rectifying bridge 1 converts an AC signal from a 3-phase AC power source 9 into a DC signal, which is applied to an inverter 2. A carrier generator 4 controls the frequency by the input voltage, and outputs a carrier of the frequency based on the pattern signal from a carrier controller 3 to a comparator 5. The comparator 5 compares the signals of an output voltage pattern generator 6 with the signal of the carrier generator 4, and outputs a PWM signal to a gate circuit 8. The gate circuit 8 amplifies the PWM signal and controls the inverter 2. The inverter 2 outputs an AC voltage proportional to the output signal of the generator 6, thereby controlling an AC motor 7.
JP56186795A 1981-11-24 1981-11-24 Expired - Lifetime JPH0379959B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56186795A JPH0379959B2 (en) 1981-11-24 1981-11-24

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56186795A JPH0379959B2 (en) 1981-11-24 1981-11-24

Publications (2)

Publication Number Publication Date
JPS5889070A true JPS5889070A (en) 1983-05-27
JPH0379959B2 JPH0379959B2 (en) 1991-12-20

Family

ID=16194713

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56186795A Expired - Lifetime JPH0379959B2 (en) 1981-11-24 1981-11-24

Country Status (1)

Country Link
JP (1) JPH0379959B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02305399A (en) * 1989-05-19 1990-12-18 Matsushita Electric Ind Co Ltd Fan device
JPH044757A (en) * 1990-04-19 1992-01-09 Sanyo Electric Co Ltd Control system of pulse-width modulation inverter
JP2008072802A (en) * 2006-09-13 2008-03-27 Matsushita Electric Ind Co Ltd Power converter, and heat pump apparatus using the same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015162704A1 (en) * 2014-04-22 2015-10-29 三菱電機株式会社 Heat pump device and heat pump system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5661699A (en) * 1979-10-24 1981-05-27 Tokyo Shibaura Electric Co Nuclear reactor coolant recircuration flow rate control device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5661699A (en) * 1979-10-24 1981-05-27 Tokyo Shibaura Electric Co Nuclear reactor coolant recircuration flow rate control device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02305399A (en) * 1989-05-19 1990-12-18 Matsushita Electric Ind Co Ltd Fan device
JPH044757A (en) * 1990-04-19 1992-01-09 Sanyo Electric Co Ltd Control system of pulse-width modulation inverter
JP2008072802A (en) * 2006-09-13 2008-03-27 Matsushita Electric Ind Co Ltd Power converter, and heat pump apparatus using the same

Also Published As

Publication number Publication date
JPH0379959B2 (en) 1991-12-20

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