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JPS5561294A - Speed controller of alternating current motor - Google Patents

Speed controller of alternating current motor

Info

Publication number
JPS5561294A
JPS5561294A JP13477778A JP13477778A JPS5561294A JP S5561294 A JPS5561294 A JP S5561294A JP 13477778 A JP13477778 A JP 13477778A JP 13477778 A JP13477778 A JP 13477778A JP S5561294 A JPS5561294 A JP S5561294A
Authority
JP
Japan
Prior art keywords
motor
duty cycle
driving pulses
wave
speed
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
JP13477778A
Other languages
Japanese (ja)
Inventor
Hajime Tsuaki
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 JP13477778A priority Critical patent/JPS5561294A/en
Publication of JPS5561294A publication Critical patent/JPS5561294A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Ac Motors In General (AREA)

Abstract

PURPOSE: To prevent the lowering of operational efficiency or the generation of beats, by controlling the speed of an AC motor by adjusting a duty cycle of driving pulses, and by making the wave-form distortion of voltage applied to the AC motor at that time small.
CONSTITUTION: A switching transistor 6 for drive is connected in series to an AC power source 1 with an AC motor 2 and a reactor 3. A pulse generator 7 consists of a non-stabilizing multivibrator provided with an operational amplifier 8, a condenser 9, resistances 10∼14, a variable resistance 15 and diodes 16, 17, and a duty cycle of driving pulses is adjusted by means of the variable resistance 15. Voltage applied to the AC motor 2 is smoothed by means of a smoothing condenser 24, and shows a sine wave form closely resembling voltage wave-form of the AC power source 1. If the duty cycle of the driving pulses changes, a period conducted to the AC motor 2 alters, and speed is controlled.
COPYRIGHT: (C)1980,JPO&Japio
JP13477778A 1978-10-31 1978-10-31 Speed controller of alternating current motor Pending JPS5561294A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13477778A JPS5561294A (en) 1978-10-31 1978-10-31 Speed controller of alternating current motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13477778A JPS5561294A (en) 1978-10-31 1978-10-31 Speed controller of alternating current motor

Publications (1)

Publication Number Publication Date
JPS5561294A true JPS5561294A (en) 1980-05-08

Family

ID=15136309

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13477778A Pending JPS5561294A (en) 1978-10-31 1978-10-31 Speed controller of alternating current motor

Country Status (1)

Country Link
JP (1) JPS5561294A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS609379A (en) * 1983-06-27 1985-01-18 Asahi Dengiyou Kk Single-phase ac variable voltage regulator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS609379A (en) * 1983-06-27 1985-01-18 Asahi Dengiyou Kk Single-phase ac variable voltage regulator

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