JPH0222086U

JPH0222086U -

Info

Publication number: JPH0222086U
Application number: JP10083388U
Authority: JP
Priority date: 1988-07-29
Filing date: 1988-07-29
Publication date: 1990-02-14

Description

[Brief explanation of drawings]

第１図は従来のコンバータ装置の回路図、第２
図はその波形図、第３図ａ，ｂは本考案によるコ
ンバータ装置の回路図、及び変流器の構造図、第
４図はその波形図である。１……直流電源、２……入力電解コンデンサ、
３，４，９……第１変流器、５，６……変換部、
７，８……変流器保護用抵抗、１０……第２変流
器、１１，１２……整流ダイオード、１３……整
流ブリツジ、１４……出力平滑用フイルター。 Figure 1 is a circuit diagram of a conventional converter device, Figure 2 is a circuit diagram of a conventional converter device.
3 is a waveform diagram thereof, FIGS. 3a and 3b are a circuit diagram of a converter device according to the present invention and a structural diagram of a current transformer, and FIG. 4 is a waveform diagram thereof. 1...DC power supply, 2...Input electrolytic capacitor,
3, 4, 9...first current transformer, 5,6...conversion section,
7, 8... Current transformer protection resistor, 10... Second current transformer, 11, 12... Rectifying diode, 13... Rectifying bridge, 14... Output smoothing filter.

Claims

[Scope of utility model registration request]

In a converter that is controlled with an ON width of 50% or less and has two conversion circuits with the same frequency and a phase difference of 180°, the primary current of each conversion circuit is excited in opposite directions as the primary winding of a current transformer. 1. A converter device characterized in that a total input current of a conversion circuit is detected using a current detection current transformer configured to do so.