JPS5517270A - Starting system for ac motor - Google Patents

Starting system for ac motor

Info

Publication number
JPS5517270A
JPS5517270A JP8997078A JP8997078A JPS5517270A JP S5517270 A JPS5517270 A JP S5517270A JP 8997078 A JP8997078 A JP 8997078A JP 8997078 A JP8997078 A JP 8997078A JP S5517270 A JPS5517270 A JP S5517270A
Authority
JP
Japan
Prior art keywords
frequency
speed
system bus
speed control
rotating 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.)
Granted
Application number
JP8997078A
Other languages
Japanese (ja)
Other versions
JPS6135792B2 (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 JP8997078A priority Critical patent/JPS5517270A/en
Publication of JPS5517270A publication Critical patent/JPS5517270A/en
Publication of JPS6135792B2 publication Critical patent/JPS6135792B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Motor And Converter Starters (AREA)

Abstract

PURPOSE: To provide a starting device of a minimum capacity by minimizing the operating time of a linear speed control circuit regardless of frequency fluctuation of the bus by setting a rotating speed to start the revolving speed control with a rated frequency on an ac-system bus.
CONSTITUTION: A frequency on an ac system bus 11 is detected by a frequency fluctuation detector 28 and this frequency fluctuating signal is combined with a speed reference signal 211 and an arithmetic counter 212 and applied to a speed controller 23 and speed comparator 26 to establish a variable control for the rotating speed to start the variable speed control. Whereby, if the frequency of the ac- system bus 11 is lowered by 10 percent, the rotating speed to start the revolving speed control also is reduced by 10 percent, therefore, the capacity of the starting device is minimized.
COPYRIGHT: (C)1980,JPO&Japio
JP8997078A 1978-07-25 1978-07-25 Starting system for ac motor Granted JPS5517270A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8997078A JPS5517270A (en) 1978-07-25 1978-07-25 Starting system for ac motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8997078A JPS5517270A (en) 1978-07-25 1978-07-25 Starting system for ac motor

Publications (2)

Publication Number Publication Date
JPS5517270A true JPS5517270A (en) 1980-02-06
JPS6135792B2 JPS6135792B2 (en) 1986-08-14

Family

ID=13985531

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8997078A Granted JPS5517270A (en) 1978-07-25 1978-07-25 Starting system for ac motor

Country Status (1)

Country Link
JP (1) JPS5517270A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59101068U (en) * 1982-12-27 1984-07-07 株式会社ダイワ Automatic gas stop device that detects earthquakes and gas leaks and closes the flow path
JPS59153477A (en) * 1983-02-22 1984-09-01 Toshiba Corp Controller for synchronous motor

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6284994A (en) * 1985-10-07 1987-04-18 中小企業事業団 Cutter
JP2020116457A (en) * 2020-05-12 2020-08-06 株式会社ユニバーサルエンターテインメント Game machine
JP2020116456A (en) * 2020-05-12 2020-08-06 株式会社ユニバーサルエンターテインメント Game machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59101068U (en) * 1982-12-27 1984-07-07 株式会社ダイワ Automatic gas stop device that detects earthquakes and gas leaks and closes the flow path
JPS59153477A (en) * 1983-02-22 1984-09-01 Toshiba Corp Controller for synchronous motor
JPH0158759B2 (en) * 1983-02-22 1989-12-13 Tokyo Shibaura Electric Co

Also Published As

Publication number Publication date
JPS6135792B2 (en) 1986-08-14

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