JPS6447277A - Pulse width modulation system for power converter - Google Patents

Pulse width modulation system for power converter

Info

Publication number
JPS6447277A
JPS6447277A JP62201800A JP20180087A JPS6447277A JP S6447277 A JPS6447277 A JP S6447277A JP 62201800 A JP62201800 A JP 62201800A JP 20180087 A JP20180087 A JP 20180087A JP S6447277 A JPS6447277 A JP S6447277A
Authority
JP
Japan
Prior art keywords
wave
carrier
generating
modulation signal
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
JP62201800A
Other languages
Japanese (ja)
Inventor
Masayoshi Kumano
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 JP62201800A priority Critical patent/JPS6447277A/en
Publication of JPS6447277A publication Critical patent/JPS6447277A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To prevent the abrupt fall of a line output by providing an apparatus with first-second carrier generating means and first and second modulating means. CONSTITUTION:A pulse width modulation system is constituted by a first carrier generating means 5a for generating a positive amplitude triangular wave as a first carrier wave, a second carrier generating means 5b for generating a negative amplitude triangular wave as a second carrier wave, a modulation signal wave generating means 6 for generating a sine wave forming a modulation signal wave corresponding to a fundamental wave with each of power converter output U-W phases, a clock generator circuit 7, first-second comparators 8a-8b and others. In a PWM pulse train by means of two carrier waves, a pulse width can vary between 0% and 100% in proportion to the magnitude of respective positive and negative modulation signals. Also, the phase of each modulation signal wave deviates from that of each carrier wave by the half period of said carrier wave so that the abrupt fall of a line output can be prevented during a period of time when the difference between instantaneous values of two modulation signal waves is more than the half of the maximum amplitude value.
JP62201800A 1987-08-14 1987-08-14 Pulse width modulation system for power converter Pending JPS6447277A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62201800A JPS6447277A (en) 1987-08-14 1987-08-14 Pulse width modulation system for power converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62201800A JPS6447277A (en) 1987-08-14 1987-08-14 Pulse width modulation system for power converter

Publications (1)

Publication Number Publication Date
JPS6447277A true JPS6447277A (en) 1989-02-21

Family

ID=16447138

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62201800A Pending JPS6447277A (en) 1987-08-14 1987-08-14 Pulse width modulation system for power converter

Country Status (1)

Country Link
JP (1) JPS6447277A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4020490A1 (en) * 1989-06-30 1991-01-10 Hitachi Ltd PARALLEL MULTIPLE CONVERTER DEVICE AND THIS USEFUL MOTOR DRIVE DEVICE
JPH0496659A (en) * 1990-08-13 1992-03-30 Fujitsu Denso Ltd Ac power supply
JPH04275057A (en) * 1991-02-28 1992-09-30 Toshiba Corp Controller for neutral point clamp type power conversion device
JPH06153520A (en) * 1991-10-11 1994-05-31 Denken:Kk Pwm inverter
JP2002027763A (en) * 2000-06-30 2002-01-25 Toyota Motor Corp Power output device and inverter device
KR100439434B1 (en) * 2001-11-01 2004-07-09 주식회사 오딘오디오 Circuit for Digital Power Supply
US11245342B2 (en) 2018-02-16 2022-02-08 Rohm Co., Ltd. AC power supply device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4020490A1 (en) * 1989-06-30 1991-01-10 Hitachi Ltd PARALLEL MULTIPLE CONVERTER DEVICE AND THIS USEFUL MOTOR DRIVE DEVICE
US5016158A (en) * 1989-06-30 1991-05-14 Hitachi, Ltd. Parallel multi-inverter system and motor drive system using the same
JPH0496659A (en) * 1990-08-13 1992-03-30 Fujitsu Denso Ltd Ac power supply
JPH04275057A (en) * 1991-02-28 1992-09-30 Toshiba Corp Controller for neutral point clamp type power conversion device
JPH06153520A (en) * 1991-10-11 1994-05-31 Denken:Kk Pwm inverter
JP2002027763A (en) * 2000-06-30 2002-01-25 Toyota Motor Corp Power output device and inverter device
KR100439434B1 (en) * 2001-11-01 2004-07-09 주식회사 오딘오디오 Circuit for Digital Power Supply
US11245342B2 (en) 2018-02-16 2022-02-08 Rohm Co., Ltd. AC power supply device

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