JPH01147680U - - Google Patents
Info
- Publication number
- JPH01147680U JPH01147680U JP1988042537U JP4253788U JPH01147680U JP H01147680 U JPH01147680 U JP H01147680U JP 1988042537 U JP1988042537 U JP 1988042537U JP 4253788 U JP4253788 U JP 4253788U JP H01147680 U JPH01147680 U JP H01147680U
- Authority
- JP
- Japan
- Prior art keywords
- power converter
- circuit
- outputs
- semiconductor element
- output
- 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
- 238000001514 detection method Methods 0.000 claims description 4
- 239000004065 semiconductor Substances 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 claims description 3
- 230000001934 delay Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 1
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
Landscapes
- Power Conversion In General (AREA)
Description
第１図は本考案に係る電力変換器の一部及びそ
の保護回路の回路図、第２図はその保護回路の各
部の動作波形図、第３図は従来の複合形スイツチ
回路の回路図である。
１１……ゲート信号発生回路、１３……故障検
出回路、１５……アンド回路、１６……ゲート駆
動回路、１７……パワーＭＯＳＦＥＴ、１９……
遅延回路、２０……コンデンサ、２１……半導体
スイツチ。なお、図中、同一符号は同一、又は相
当部分を示す。
Figure 1 is a circuit diagram of a part of the power converter according to the present invention and its protection circuit, Figure 2 is an operating waveform diagram of each part of the protection circuit, and Figure 3 is a circuit diagram of a conventional composite switch circuit. be. 11... Gate signal generation circuit, 13... Failure detection circuit, 15... AND circuit, 16... Gate drive circuit, 17... Power MOSFET, 19...
Delay circuit, 20... capacitor, 21... semiconductor switch. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.
Claims (1)
換器において、 前記半導体素子の開閉信号入力部と接続してお
り、コンデンサと該コンデンサを充電状態になす
スイツチとの直列回路と、前記電力変換器の故障
を検出して所定信号を出力する故障検出回路と、
該故障検出回路の出力を遅延して所定信号を出力
する遅延回路とを備え、前記故障検出回路の出力
により前記スイツチを閉路した後に、前記遅延回
路の出力により前記半導体素子を開路すべき信号
を停止する構成としてあることを特徴とする電力
変換器の保護回路。[Scope of Utility Model Registration Claim] In a power converter equipped with a semiconductor element that controls the on/off of current, the power converter is connected to a switching signal input section of the semiconductor element, and is connected in series with a capacitor and a switch that brings the capacitor into a charged state. a failure detection circuit that detects a failure of the power converter and outputs a predetermined signal;
a delay circuit that delays the output of the failure detection circuit and outputs a predetermined signal; and after the switch is closed by the output of the failure detection circuit, the output of the delay circuit outputs a signal to open the semiconductor element. A protection circuit for a power converter, characterized in that it has a configuration that stops the power converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988042537U JPH01147680U (en) | 1988-03-29 | 1988-03-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988042537U JPH01147680U (en) | 1988-03-29 | 1988-03-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01147680U true JPH01147680U (en) | 1989-10-12 |
Family
ID=31268949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988042537U Pending JPH01147680U (en) | 1988-03-29 | 1988-03-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01147680U (en) |
-
1988
- 1988-03-29 JP JP1988042537U patent/JPH01147680U/ja active Pending