JPS58108788U - Overcurrent limit signal generator for PWM inverter - Google Patents
Overcurrent limit signal generator for PWM inverterInfo
- Publication number
- JPS58108788U JPS58108788U JP482082U JP482082U JPS58108788U JP S58108788 U JPS58108788 U JP S58108788U JP 482082 U JP482082 U JP 482082U JP 482082 U JP482082 U JP 482082U JP S58108788 U JPS58108788 U JP S58108788U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- circuit
- overcurrent
- supplied
- limit signal
- 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)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第1図はこの考案の一実施例を示す構成説明図、第2図
は過電流設定値対周波数特性図である。
1・・・コンバータ部、2・・・インバータ部、3・・
・シャント抵抗、6・・・2次遅れフィルタ回路ミ7・
・・点弧信号発生回路、8・・・第1突合せ回路、9・
・・第2突合せ回路。FIG. 1 is a configuration explanatory diagram showing an embodiment of this invention, and FIG. 2 is a diagram showing overcurrent set value versus frequency characteristics. 1...Converter section, 2...Inverter section, 3...
・Shunt resistor, 6...Second order lag filter circuit Mi7・
...Ignition signal generation circuit, 8...First matching circuit, 9.
...Second matching circuit.
Claims (1)
するシャント抵抗と、この抵抗で検出された電流を平滑
する2次遅れフィルタ回路と、前記インバータ部へ供給
され、インバータ部をPWM制御する信号を発生する点
弧信号発生回路と、この回路の入力に供給される周波数
電圧指令信号を周波数に比例する電流信号に変換して供
給され、予め設定された過電流の一定値と加算される第
1突合せ回路と、この第1突合せ回路の出力と前記フィ
ルタ回路の出力とが供給され、出力端に過電流制限信号
を得る第2突合せ回路とを備えたことを特徴とするPW
Mインバータの過電流側 ′限信号発生装置。A shunt resistor that detects the direct current flowing from the converter section to the inverter section, a second-order lag filter circuit that smoothes the current detected by this resistor, and a signal that is supplied to the inverter section and generates a signal that performs PWM control of the inverter section. An ignition signal generation circuit, and a first matching circuit that converts the frequency voltage command signal supplied to the input of this circuit into a current signal proportional to frequency, and adds the signal to a preset constant value of overcurrent. and a second matching circuit to which the output of the first matching circuit and the output of the filter circuit are supplied and which obtains an overcurrent limit signal at its output terminal.
Overcurrent side limit signal generator for M inverter.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP482082U JPS58108788U (en) | 1982-01-18 | 1982-01-18 | Overcurrent limit signal generator for PWM inverter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP482082U JPS58108788U (en) | 1982-01-18 | 1982-01-18 | Overcurrent limit signal generator for PWM inverter |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS58108788U true JPS58108788U (en) | 1983-07-25 |
Family
ID=30017650
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP482082U Pending JPS58108788U (en) | 1982-01-18 | 1982-01-18 | Overcurrent limit signal generator for PWM inverter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS58108788U (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5759493A (en) * | 1980-09-24 | 1982-04-09 | Hitachi Ltd | Overcurrent detecting system at variable frequency controlling time |
-
1982
- 1982-01-18 JP JP482082U patent/JPS58108788U/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5759493A (en) * | 1980-09-24 | 1982-04-09 | Hitachi Ltd | Overcurrent detecting system at variable frequency controlling time |
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