JPS58108788U - Overcurrent limit signal generator for PWM inverter - Google Patents

Overcurrent limit signal generator for PWM inverter

Info

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
Application number
JP482082U
Other languages
Japanese (ja)
Inventor
岩「さき」　邦治
Original Assignee
株式会社明電舎
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 株式会社明電舎 filed Critical 株式会社明電舎
Priority to JP482082U priority Critical patent/JPS58108788U/en
Publication of JPS58108788U publication Critical patent/JPS58108788U/en
Pending legal-status Critical Current

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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

【図面の簡単な説明】[Brief explanation of the drawing]

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)

【実用新案登録請求の範囲】[Scope of utility model registration request] コンバータ部からインバータ部へ流れる直流電流を検出
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.
JP482082U 1982-01-18 1982-01-18 Overcurrent limit signal generator for PWM inverter Pending JPS58108788U (en)

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)

* Cited by examiner, † Cited by third party
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

Patent Citations (1)

* Cited by examiner, † Cited by third party
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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