JPS5553188A - Power supply for driving ac motor - Google Patents

Power supply for driving ac motor

Info

Publication number
JPS5553188A
JPS5553188A JP12552078A JP12552078A JPS5553188A JP S5553188 A JPS5553188 A JP S5553188A JP 12552078 A JP12552078 A JP 12552078A JP 12552078 A JP12552078 A JP 12552078A JP S5553188 A JPS5553188 A JP S5553188A
Authority
JP
Japan
Prior art keywords
motor
frequency
electromotive voltage
inverter
output
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
JP12552078A
Other languages
Japanese (ja)
Inventor
Kosaku Ichikawa
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 JP12552078A priority Critical patent/JPS5553188A/en
Publication of JPS5553188A publication Critical patent/JPS5553188A/en
Pending legal-status Critical Current

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  • Motor And Converter Starters (AREA)

Abstract

PURPOSE: To drive an ac motor economically and excellently by sensing the approximate coincidence of the frequency of a counter electromotive voltage of a motor and the frequency of an inverter output, and changing the frequency step by step.
CONSTITUTION: The coincidence of the output signal frequency A of a counter- electromotive voltage sensor 17 for sensing a counter electromotive voltage of at least 1 motor of motors 10 and the output frequency B of an inverter 15 is sensed by a frequency coincidence sensor 18. A control circuit 19 receives the output signal C and sends out the control signals D and E in order to control an inverter 15 and capacitors 16 for power-factor improvement. In this constitution, the current or power for which counter electromotive voltage of the motor or the power factor of the inverter output can be sensed, and the ac motor can be driven efficiently.
COPYRIGHT: (C)1980,JPO&Japio
JP12552078A 1978-10-12 1978-10-12 Power supply for driving ac motor Pending JPS5553188A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12552078A JPS5553188A (en) 1978-10-12 1978-10-12 Power supply for driving ac motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12552078A JPS5553188A (en) 1978-10-12 1978-10-12 Power supply for driving ac motor

Publications (1)

Publication Number Publication Date
JPS5553188A true JPS5553188A (en) 1980-04-18

Family

ID=14912179

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12552078A Pending JPS5553188A (en) 1978-10-12 1978-10-12 Power supply for driving ac motor

Country Status (1)

Country Link
JP (1) JPS5553188A (en)

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