JPS5549997A - Motor drive system using pulse width modulation inverter - Google Patents

Motor drive system using pulse width modulation inverter

Info

Publication number
JPS5549997A
JPS5549997A JP12273278A JP12273278A JPS5549997A JP S5549997 A JPS5549997 A JP S5549997A JP 12273278 A JP12273278 A JP 12273278A JP 12273278 A JP12273278 A JP 12273278A JP S5549997 A JPS5549997 A JP S5549997A
Authority
JP
Japan
Prior art keywords
waves
motor
generating circuit
frequency
sine
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
JP12273278A
Other languages
Japanese (ja)
Inventor
Shigeki Kawada
Hiroshi Ishida
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.)
Fanuc Corp
Original Assignee
Fanuc Corp
Fujitsu Fanuc 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 Fanuc Corp, Fujitsu Fanuc Ltd filed Critical Fanuc Corp
Priority to JP12273278A priority Critical patent/JPS5549997A/en
Publication of JPS5549997A publication Critical patent/JPS5549997A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To improve the drive characteristics of a motor, by driving the motor by artificial sine wave voltage in not only a region not higher than base speed but also a region not lower than the base speed.
CONSTITUTION: An AC motor 33 is driven through an inverter circuit consisting of the circuits of the switching elements 21∼26 and rectifiers 27∼32 of transistors, etc. connected to a direct current power source 34. The output of a signal generating circuit composed of a sine wave generating circuit 35, in which frequency and amplitude can be changed, a saw tooth wave generating circuit 8, whose waves have frequency obtained by multiplying the frequency f of sine waves by K, comparators 9∼11 and reversers 12∼14 is applied to the bases of the transistors 21∼ 26. Output PWM waves maintain periodicity because the number of the waves of saw tooth waves corresponding to a half-period of sine waves is integers, and there is no danger that the unevenness is produced in the torque of the motor 33.
COPYRIGHT: (C)1980,JPO&Japio
JP12273278A 1978-10-06 1978-10-06 Motor drive system using pulse width modulation inverter Pending JPS5549997A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12273278A JPS5549997A (en) 1978-10-06 1978-10-06 Motor drive system using pulse width modulation inverter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12273278A JPS5549997A (en) 1978-10-06 1978-10-06 Motor drive system using pulse width modulation inverter

Publications (1)

Publication Number Publication Date
JPS5549997A true JPS5549997A (en) 1980-04-11

Family

ID=14843207

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12273278A Pending JPS5549997A (en) 1978-10-06 1978-10-06 Motor drive system using pulse width modulation inverter

Country Status (1)

Country Link
JP (1) JPS5549997A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4995135A (en) * 1973-01-17 1974-09-10
JPS52154020A (en) * 1976-06-17 1977-12-21 Mitsubishi Electric Corp Control system for induction motor by plurality of pulse duration modulated variable frequency inverter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4995135A (en) * 1973-01-17 1974-09-10
JPS52154020A (en) * 1976-06-17 1977-12-21 Mitsubishi Electric Corp Control system for induction motor by plurality of pulse duration modulated variable frequency inverter

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