JPS5594593A - Control means for three-phase induction motor - Google Patents

Control means for three-phase induction motor

Info

Publication number
JPS5594593A
JPS5594593A JP66979A JP66979A JPS5594593A JP S5594593 A JPS5594593 A JP S5594593A JP 66979 A JP66979 A JP 66979A JP 66979 A JP66979 A JP 66979A JP S5594593 A JPS5594593 A JP S5594593A
Authority
JP
Japan
Prior art keywords
switches
braking
induction motor
power
time
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
JP66979A
Other languages
Japanese (ja)
Inventor
Mutsuhiro Terunuma
Hisakatsu Kiwaki
Yuichi Akihama
Masayuki Takayama
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP66979A priority Critical patent/JPS5594593A/en
Publication of JPS5594593A publication Critical patent/JPS5594593A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Ac Motors In General (AREA)
  • Stopping Of Electric Motors (AREA)

Abstract

PURPOSE: To increase the braking torque in a high-speed region by performing DC all-wave braking by the used of an all-wave rectifier at the time of braking.
CONSTITUTION: At the time of power running, switches 21∼23 are closed and switches 31∼34 are opened. The phases of thyristors 2∼4 are controlled, and the power-running torque of an induction motor 1 is controlled. At the time of braking, the thyristor 2 is detriggerred, the switches 21∼23 are opened, and the switches 31∼34 are closed. AC power is supplied from the R and T phases of a three-phase AC power supply. A unidirectional all-wave rectified current is always supplied to stator winding V and U from the thyristors 3 and 4 and diodes 8 and 9, and the large braking torque can be obtained.
COPYRIGHT: (C)1980,JPO&Japio
JP66979A 1979-01-10 1979-01-10 Control means for three-phase induction motor Pending JPS5594593A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP66979A JPS5594593A (en) 1979-01-10 1979-01-10 Control means for three-phase induction motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP66979A JPS5594593A (en) 1979-01-10 1979-01-10 Control means for three-phase induction motor

Publications (1)

Publication Number Publication Date
JPS5594593A true JPS5594593A (en) 1980-07-18

Family

ID=11480143

Family Applications (1)

Application Number Title Priority Date Filing Date
JP66979A Pending JPS5594593A (en) 1979-01-10 1979-01-10 Control means for three-phase induction motor

Country Status (1)

Country Link
JP (1) JPS5594593A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005067130A1 (en) * 2004-01-05 2005-07-21 Ventopia Ltd. Fan driving circuit having positive output-to-load characteristic

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005067130A1 (en) * 2004-01-05 2005-07-21 Ventopia Ltd. Fan driving circuit having positive output-to-load characteristic
KR100562028B1 (en) * 2004-01-05 2006-03-16 주식회사 벤토피아 Fan driving circuit for positive pressure-to-output characteristic

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