JPS6481669A - Transistor inverter for threephase ac motor - Google Patents

Transistor inverter for threephase ac motor

Info

Publication number
JPS6481669A
JPS6481669A JP62236482A JP23648287A JPS6481669A JP S6481669 A JPS6481669 A JP S6481669A JP 62236482 A JP62236482 A JP 62236482A JP 23648287 A JP23648287 A JP 23648287A JP S6481669 A JPS6481669 A JP S6481669A
Authority
JP
Japan
Prior art keywords
trs
current
turned
time
pair
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
JP62236482A
Other languages
Japanese (ja)
Other versions
JP2576145B2 (en
Inventor
Toshihiro Nomura
Hidetaka Kidoguchi
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji 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 Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP62236482A priority Critical patent/JP2576145B2/en
Publication of JPS6481669A publication Critical patent/JPS6481669A/en
Application granted granted Critical
Publication of JP2576145B2 publication Critical patent/JP2576145B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Control Of Ac Motors In General (AREA)
  • Inverter Devices (AREA)

Abstract

PURPOSE:To reduce a snubber loss by directly connecting a snubber capacitor in parallel with a transistor switch(Tr), turning ON and OFF said Tr only once per 1 AC cycle and setting a sufficiently large time for turning OFF a pair of Trs of arms opposed to each other upward and downward so that said pair of Trs may return to the original condition. CONSTITUTION:Each of snubber capacitors 51-56 is directly connected in parallel with each of Trs 31-36. When Trs 31 and 32 are turned OFF and ON respectively, an electric current iu flows from a motor terminal U via the Tr 32 to the negative electrode of a power source 1. When the Tr 32 is turned OFF at this point of time, the current iu is received by a capacitor 52 and the half of said current, by a capacitor 51 a little later. As a result, the bath voltage of the Tr 32 rises with a gentle inclination determined by the electrostatic capacity of said capacitors 51, 52 and the current iu, and reaches a source voltage VDC after a charge and discharge time. When a set time for both of said pair of series transistors to be turned OFF is so set as to be longer than said charge and discharge time, it is possible to obtain a good transistor inverter.
JP62236482A 1987-09-21 1987-09-21 Transistor inverter for three-phase AC motor Expired - Lifetime JP2576145B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62236482A JP2576145B2 (en) 1987-09-21 1987-09-21 Transistor inverter for three-phase AC motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62236482A JP2576145B2 (en) 1987-09-21 1987-09-21 Transistor inverter for three-phase AC motor

Publications (2)

Publication Number Publication Date
JPS6481669A true JPS6481669A (en) 1989-03-27
JP2576145B2 JP2576145B2 (en) 1997-01-29

Family

ID=17001384

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62236482A Expired - Lifetime JP2576145B2 (en) 1987-09-21 1987-09-21 Transistor inverter for three-phase AC motor

Country Status (1)

Country Link
JP (1) JP2576145B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0427948U (en) * 1990-06-28 1992-03-05
CN102447401A (en) * 2011-12-31 2012-05-09 南京理工大学 Power inverter
JP2012210153A (en) * 2012-08-03 2012-10-25 Daikin Ind Ltd Electric power conversion apparatus
JP2013157346A (en) * 2012-01-26 2013-08-15 Jtekt Corp Semiconductor device
WO2016134527A1 (en) * 2015-02-27 2016-09-01 The University Of Hong Kong Power converter and power conversion method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5736584A (en) * 1980-08-12 1982-02-27 Mitsubishi Electric Corp Shortcircuit protection device
JPS62247764A (en) * 1986-04-18 1987-10-28 Nippon Reliance Kk Natsuyokuseisochi

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5736584A (en) * 1980-08-12 1982-02-27 Mitsubishi Electric Corp Shortcircuit protection device
JPS62247764A (en) * 1986-04-18 1987-10-28 Nippon Reliance Kk Natsuyokuseisochi

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0427948U (en) * 1990-06-28 1992-03-05
CN102447401A (en) * 2011-12-31 2012-05-09 南京理工大学 Power inverter
JP2013157346A (en) * 2012-01-26 2013-08-15 Jtekt Corp Semiconductor device
JP2012210153A (en) * 2012-08-03 2012-10-25 Daikin Ind Ltd Electric power conversion apparatus
WO2016134527A1 (en) * 2015-02-27 2016-09-01 The University Of Hong Kong Power converter and power conversion method
US11146170B2 (en) 2015-02-27 2021-10-12 The University Of Hong Kong Plural stages switching capacitor converter

Also Published As

Publication number Publication date
JP2576145B2 (en) 1997-01-29

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