JPS558224A - Frequency converter control system - Google Patents

Frequency converter control system

Info

Publication number
JPS558224A
JPS558224A JP7947078A JP7947078A JPS558224A JP S558224 A JPS558224 A JP S558224A JP 7947078 A JP7947078 A JP 7947078A JP 7947078 A JP7947078 A JP 7947078A JP S558224 A JPS558224 A JP S558224A
Authority
JP
Japan
Prior art keywords
output voltage
output
circuit
voltage
frequency converter
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
JP7947078A
Other languages
Japanese (ja)
Other versions
JPS5632863B2 (en
Inventor
Akio Hirata
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP7947078A priority Critical patent/JPS558224A/en
Publication of JPS558224A publication Critical patent/JPS558224A/en
Publication of JPS5632863B2 publication Critical patent/JPS5632863B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Ac-Ac Conversion (AREA)

Abstract

PURPOSE: To stably control an AC motor by providing a waveform improving circuit at the output side of an output voltage rectifying circuit and controlling the motor upon detection of an output voltage signal removed from a commutation surge voltage.
CONSTITUTION: The output voltage of a frequency converter is produced by a detector 19, and rectified by an output voltage rectifier 20. The output of the rectifier 20 is applied to a waveform improving circuit 22, which thereupon produces only the waveform component superimposed on the output voltage of the frequency converter in correspondence to a commutation surge voltage via a filter circuit A for only predetermined frequency band to thus feed back the differential voltage between the waveform component and the output signal as an output voltage detection singal to a frequency control circuit 17 and an α control circuit 18.Accordingly, it can obtain stable output voltage and current control in the entire output frequency range of the requency converter to thereby prevent malfunction such as irregular rotation of a load motor 15.
COPYRIGHT: (C)1980,JPO&Japio
JP7947078A 1978-06-30 1978-06-30 Frequency converter control system Granted JPS558224A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7947078A JPS558224A (en) 1978-06-30 1978-06-30 Frequency converter control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7947078A JPS558224A (en) 1978-06-30 1978-06-30 Frequency converter control system

Publications (2)

Publication Number Publication Date
JPS558224A true JPS558224A (en) 1980-01-21
JPS5632863B2 JPS5632863B2 (en) 1981-07-30

Family

ID=13690768

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7947078A Granted JPS558224A (en) 1978-06-30 1978-06-30 Frequency converter control system

Country Status (1)

Country Link
JP (1) JPS558224A (en)

Also Published As

Publication number Publication date
JPS5632863B2 (en) 1981-07-30

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