JPS6481669A - Transistor inverter for threephase ac motor - Google Patents
Transistor inverter for threephase ac motorInfo
- 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
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.
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)
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)
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 |
-
1987
- 1987-09-21 JP JP62236482A patent/JP2576145B2/en not_active Expired - Lifetime
Patent Citations (2)
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)
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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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
EXPY | Cancellation because of completion of term |