JPS6460224A - Excess current detection circuit for inverter device - Google Patents
Excess current detection circuit for inverter deviceInfo
- Publication number
- JPS6460224A JPS6460224A JP62211461A JP21146187A JPS6460224A JP S6460224 A JPS6460224 A JP S6460224A JP 62211461 A JP62211461 A JP 62211461A JP 21146187 A JP21146187 A JP 21146187A JP S6460224 A JPS6460224 A JP S6460224A
- Authority
- JP
- Japan
- Prior art keywords
- current
- excess current
- excess
- detecting
- directional
- 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
- Inverter Devices (AREA)
- Protection Of Static Devices (AREA)
Abstract
PURPOSE:To enable a main circuit element to be certainly protected from excess current even in a regenerative state, by setting a reverse-directional current detecting level to be lower than a forward-directional current detecting level, and by detecting the excess current flowing to the main circuit element. CONSTITUTION:Current flowing through a main circuit switching element is detected by a current transformer 7, and the input to an excess current detecting circuit 8 is provided. So far as the excess current detecting circuit 8 is concerned, the excess current state of forward-directional current is discriminated by a positive pole voltage detecting circuit 14, and the excess current state of reverse-directional current is discriminated by a negative pole voltage detecting circuit 13. In its case, the excess current detecting level of the reverse current is contrived to be set to be lower than the excess current detecting level of the forward current. As a result, even if the excess current resistance degree of the main circuit switching element is lowered at the time of a regenerative state, the element can be certainly protected from being damaged due to excess current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62211461A JPS6460224A (en) | 1987-08-27 | 1987-08-27 | Excess current detection circuit for inverter device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62211461A JPS6460224A (en) | 1987-08-27 | 1987-08-27 | Excess current detection circuit for inverter device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6460224A true JPS6460224A (en) | 1989-03-07 |
Family
ID=16606324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62211461A Pending JPS6460224A (en) | 1987-08-27 | 1987-08-27 | Excess current detection circuit for inverter device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6460224A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02211068A (en) * | 1989-02-07 | 1990-08-22 | Matsushita Electric Ind Co Ltd | Current detection in inverter apparatus |
| JP2013106377A (en) * | 2011-11-10 | 2013-05-30 | Fuji Electric Co Ltd | Power conversion device and overcurrent protection circuit |
| WO2015011941A1 (en) * | 2013-07-23 | 2015-01-29 | アイシン・エィ・ダブリュ株式会社 | Inverter device |
-
1987
- 1987-08-27 JP JP62211461A patent/JPS6460224A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02211068A (en) * | 1989-02-07 | 1990-08-22 | Matsushita Electric Ind Co Ltd | Current detection in inverter apparatus |
| JP2013106377A (en) * | 2011-11-10 | 2013-05-30 | Fuji Electric Co Ltd | Power conversion device and overcurrent protection circuit |
| WO2015011941A1 (en) * | 2013-07-23 | 2015-01-29 | アイシン・エィ・ダブリュ株式会社 | Inverter device |
| US9571026B2 (en) | 2013-07-23 | 2017-02-14 | Aisin Aw Co., Ltd. | Inverter apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS5570862A (en) | Transfer paper separating device in electronic copier | |
| JPS6460224A (en) | Excess current detection circuit for inverter device | |
| JPS5637793A (en) | Loop detecting circuit | |
| JPS55106365A (en) | Megger | |
| JPS5687119A (en) | Switching regulator | |
| JPS5471347A (en) | State detector | |
| JPS6434132A (en) | Device for driving ac motor | |
| JPS5720845A (en) | Data protecting system | |
| JPS6489124A (en) | Operation watch device of power switch | |
| JPS5462594A (en) | Electrical discharge machine | |
| JPS6482391A (en) | Prom writing device | |
| JPS57130125A (en) | Semiconductor power converting device | |
| JPS5449548A (en) | Method of protecting induction motor | |
| JPS57176401A (en) | Malfunction preventing system for alarm circuit at input power supply application | |
| JPS5523549A (en) | Electric device | |
| JPS57110077A (en) | Protecting circuit for booster type converter | |
| JPS57168525A (en) | Detecting circuit of power supply voltage | |
| JPS6455016A (en) | Dc current limiter | |
| JPS5450942A (en) | Detector for disconnection in distribution line | |
| JPS5762629A (en) | Detecting device for fault of thyristor circuit | |
| JPS64626A (en) | Current-limiting circuit breaker | |
| JPS5619120A (en) | Overcurrent detector for alternating current inductive load | |
| JPS57192130A (en) | Gate circuit for gto thyristor | |
| JPS52122825A (en) | Dc-dc converter | |
| JPS56140269A (en) | Detecting device for instantaneous interruption |