JPS6434190A - Pwm control inverter device - Google Patents
Pwm control inverter deviceInfo
- Publication number
- JPS6434190A JPS6434190A JP62186543A JP18654387A JPS6434190A JP S6434190 A JPS6434190 A JP S6434190A JP 62186543 A JP62186543 A JP 62186543A JP 18654387 A JP18654387 A JP 18654387A JP S6434190 A JPS6434190 A JP S6434190A
- Authority
- JP
- Japan
- Prior art keywords
- speed
- operating
- power loss
- signal vls
- low
- 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
Links
Landscapes
- Control Of Ac Motors In General (AREA)
- Inverter Devices (AREA)
Abstract
PURPOSE:To improve the operating efficiency of a switching element in a normal speed and miniaturize the title device, by reducing the power loss of the switching element upon operating in a low speed. CONSTITUTION:When the absolute speed of a motor 7 becomes lower than a given speed, a low-speed operating signal VLS is outputted by a comparator 10. The limiting function of a speed control circuit 1 is operated by the signal VLS and limits the value of a current command I to a predetermined value. A triangular wave generating circuit 11 operates a switch 11A by the signal VLS to reduce a chopping frequency. According to this operation, a stationary power loss due to conducted current and the power loss due to switching may be reduced upon operating in a low speed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62186543A JPS6434190A (en) | 1987-07-28 | 1987-07-28 | Pwm control inverter device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62186543A JPS6434190A (en) | 1987-07-28 | 1987-07-28 | Pwm control inverter device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6434190A true JPS6434190A (en) | 1989-02-03 |
Family
ID=16190343
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62186543A Pending JPS6434190A (en) | 1987-07-28 | 1987-07-28 | Pwm control inverter device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6434190A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4911648A (en) * | 1988-07-15 | 1990-03-27 | Ando Electric Co., Ltd. | IC connection/disconnection mechanism and method for carrying out the same |
JP2010268551A (en) * | 2009-05-13 | 2010-11-25 | Fuji Electric Systems Co Ltd | Inverter equipment |
WO2012069229A3 (en) * | 2010-11-24 | 2013-01-31 | Robert Bosch Gmbh | Drive method and apparatus for an electric machine |
WO2023067828A1 (en) * | 2021-10-22 | 2023-04-27 | 株式会社ミツバ | Motor device, wiper device, and motor control method |
-
1987
- 1987-07-28 JP JP62186543A patent/JPS6434190A/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4911648A (en) * | 1988-07-15 | 1990-03-27 | Ando Electric Co., Ltd. | IC connection/disconnection mechanism and method for carrying out the same |
JP2010268551A (en) * | 2009-05-13 | 2010-11-25 | Fuji Electric Systems Co Ltd | Inverter equipment |
WO2012069229A3 (en) * | 2010-11-24 | 2013-01-31 | Robert Bosch Gmbh | Drive method and apparatus for an electric machine |
CN103210579A (en) * | 2010-11-24 | 2013-07-17 | 罗伯特·博世有限公司 | Drive method and apparatus for an electric machine |
US9099953B2 (en) | 2010-11-24 | 2015-08-04 | Robert Bosch Gmbh | Control method and device for an electric machine |
WO2023067828A1 (en) * | 2021-10-22 | 2023-04-27 | 株式会社ミツバ | Motor device, wiper device, and motor control method |
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