JPS54140156A - Chopper - Google Patents

Chopper

Info

Publication number
JPS54140156A
JPS54140156A JP4844078A JP4844078A JPS54140156A JP S54140156 A JPS54140156 A JP S54140156A JP 4844078 A JP4844078 A JP 4844078A JP 4844078 A JP4844078 A JP 4844078A JP S54140156 A JPS54140156 A JP S54140156A
Authority
JP
Japan
Prior art keywords
chopping
pulse width
voltage
power factor
output voltage
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
JP4844078A
Other languages
Japanese (ja)
Inventor
Nakatsugu Kawakami
Toru Niwa
Katsu Ueno
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.)
Meidensha Electric Manufacturing Co Ltd
Original Assignee
Meidensha Electric Manufacturing 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 Meidensha Electric Manufacturing Co Ltd filed Critical Meidensha Electric Manufacturing Co Ltd
Priority to JP4844078A priority Critical patent/JPS54140156A/en
Publication of JPS54140156A publication Critical patent/JPS54140156A/en
Pending legal-status Critical Current

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  • Control Of Electrical Variables (AREA)

Abstract

PURPOSE: To improve the power factor of AC input and to reduce the higher harmonic current, by performing the chopping in synchronization with the power source and making the chopping wave to plurality pulse train where the pulse width ratio corresponds with the voltage waveform.
CONSTITUTION: The rectifier circuit 8 is formed into a bridge and the controller 6 controls the DC output voltage through the rectifying phase control of each thyristor. In said phase control, the chopping is started such that the corresponding voltage has lower phase angle(lead) than that of preceeding phase and the current leads from the voltage. Consequently the power factor is improved. While the pulse width modulating system utilizing a plurality of pulse train having different pulse width ratio is employed in the chopping function, and the pulse width is controlled in accordance with required DC output voltage.
COPYRIGHT: (C)1979,JPO&Japio
JP4844078A 1978-04-22 1978-04-22 Chopper Pending JPS54140156A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4844078A JPS54140156A (en) 1978-04-22 1978-04-22 Chopper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4844078A JPS54140156A (en) 1978-04-22 1978-04-22 Chopper

Publications (1)

Publication Number Publication Date
JPS54140156A true JPS54140156A (en) 1979-10-31

Family

ID=12803404

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4844078A Pending JPS54140156A (en) 1978-04-22 1978-04-22 Chopper

Country Status (1)

Country Link
JP (1) JPS54140156A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59168522A (en) * 1983-03-16 1984-09-22 Hitachi Ltd Gate controller for power converter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59168522A (en) * 1983-03-16 1984-09-22 Hitachi Ltd Gate controller for power converter

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