JPS6454790U - - Google Patents

Info

Publication number
JPS6454790U
JPS6454790U JP1987146412U JP14641287U JPS6454790U JP S6454790 U JPS6454790 U JP S6454790U JP 1987146412 U JP1987146412 U JP 1987146412U JP 14641287 U JP14641287 U JP 14641287U JP S6454790 U JPS6454790 U JP S6454790U
Authority
JP
Japan
Prior art keywords
circuit
conversion circuit
rectifier
rectifier circuit
positive terminal
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
JP1987146412U
Other languages
Japanese (ja)
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 filed Critical
Priority to JP1987146412U priority Critical patent/JPS6454790U/ja
Publication of JPS6454790U publication Critical patent/JPS6454790U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Protection Of Static Devices (AREA)
  • Power Conversion In General (AREA)

Description

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

第1図は本考案の一実施例の回路図、第2図a
及びbは直流―交流変換回路の出力線に地絡が発
生した場合に2つのトランジスタに流れる電流の
波形図、第3図は従来のインバータ回路の回路図
、第4図a,b及びcはその各部の電流の波形図
、第5図は、地絡が発生したときその2つのトラ
ンジスタに流れる電流の波形図である。 1…3相全波整流回路、2…交流電源、3…ホ
ール素子、4…直流―交流変換回路、6…平滑用
インダクタンス、7〜7…トランジスタ、8
…制御部、9,9…出力端子。
Figure 1 is a circuit diagram of an embodiment of the present invention, Figure 2a
and b are waveform diagrams of the current flowing through the two transistors when a ground fault occurs in the output line of the DC-AC conversion circuit, Figure 3 is a circuit diagram of a conventional inverter circuit, and Figures 4 a, b, and c are FIG. 5 is a waveform diagram of the current flowing through the two transistors when a ground fault occurs. DESCRIPTION OF SYMBOLS 1... Three-phase full-wave rectifier circuit, 2... AC power supply, 3... Hall element, 4... DC-AC conversion circuit, 6... Smoothing inductance, 7 1 to 7 4 ... Transistor, 8
...control unit, 9 1 , 9 2 ...output terminals.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 交流電源に接続される整流回路と、該整流回路
の正極端子及び負極端子に接続されたチヨツピン
グ素子から成る直流―交流変換回路と、該変換回
路の交流出力電流を所定値に制御する制御部とか
ら成るインバータ回路において、前記整流回路の
正極端子及び負極端子と前記直流―交流変換回路
との接続回路の一方に電流制限用インダクタンス
を、他方に前記制御部用の電流検出素子をそれぞ
れ接続したことを特徴とするインバータ回路の地
絡防護回路。
A rectifier circuit connected to an AC power supply, a DC-AC conversion circuit comprising a chopping element connected to a positive terminal and a negative terminal of the rectifier circuit, and a control unit that controls an AC output current of the conversion circuit to a predetermined value. In the inverter circuit consisting of, a current limiting inductance is connected to one side of a connection circuit between the positive terminal and negative terminal of the rectifier circuit and the DC-AC conversion circuit, and a current detection element for the control section is connected to the other side. A ground fault protection circuit for an inverter circuit.
JP1987146412U 1987-09-28 1987-09-28 Pending JPS6454790U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1987146412U JPS6454790U (en) 1987-09-28 1987-09-28

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1987146412U JPS6454790U (en) 1987-09-28 1987-09-28

Publications (1)

Publication Number Publication Date
JPS6454790U true JPS6454790U (en) 1989-04-04

Family

ID=31415877

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987146412U Pending JPS6454790U (en) 1987-09-28 1987-09-28

Country Status (1)

Country Link
JP (1) JPS6454790U (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60137582A (en) * 1983-12-24 1985-07-22 Honda Motor Co Ltd Constant current control circuit of resistance welding machine
JPS617980A (en) * 1984-06-22 1986-01-14 Hitachi Medical Corp Data processor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60137582A (en) * 1983-12-24 1985-07-22 Honda Motor Co Ltd Constant current control circuit of resistance welding machine
JPS617980A (en) * 1984-06-22 1986-01-14 Hitachi Medical Corp Data processor

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