JPH0425481U

JPH0425481U -

Info

Publication number: JPH0425481U
Application number: JP6509490U
Authority: JP
Priority date: 1990-06-20
Filing date: 1990-06-20
Publication date: 1992-02-28

Description

[Brief explanation of drawings]

第１図は本考案の一実施例を示す回路図、第２
図は第１図の装置の要部の電圧波形図、第３図は
従来装置の交流入力電圧、電流およびＡＣＣＴ２
次出力の波形図、第４図は本考案装置の交流入力
電圧、電流およびホールＣＴ２次出力の波形図、
第５図は一般の変換装置の交流電圧、電流波形図
である。１……整流器、２……チヨツパ、５……トラン
ジスタ、６……直流コンデンサ、７……トランス
、８……交流／直流信号変換器、９……ホールＣ
Ｔ、１０……電流／電圧信号変換器、１１……交
流／直流信号変換器、１２……直流電圧検出器、
１３……第１の加減算器、１４……偏差増幅器、
１６……掛算器、１７……第２の加減算器、１８
……ヒステリシスコンパレータ。 Figure 1 is a circuit diagram showing one embodiment of the present invention;
The figure is a voltage waveform diagram of the main parts of the device in Figure 1, and Figure 3 is the AC input voltage, current, and ACCT2 of the conventional device.
Figure 4 is a waveform diagram of the AC input voltage, current and Hall CT secondary output of the device of the present invention.
FIG. 5 is an AC voltage and current waveform diagram of a general converter. 1... Rectifier, 2... Chopper, 5... Transistor, 6... DC capacitor, 7... Transformer, 8... AC/DC signal converter, 9... Hall C
T, 10...Current/voltage signal converter, 11...AC/DC signal converter, 12...DC voltage detector,
13...first adder/subtractor, 14...deviation amplifier,
16... Multiplier, 17... Second adder/subtractor, 18
...Hysteresis comparator.

Claims

[Scope of utility model registration request]

a forward conversion section that converts AC power into DC power; a DC power adjustment section that adjusts the DC power of the forward conversion section and supplies DC power to a subsequent power conversion device; and an output voltage of the DC power adjustment section. a multiplier for multiplying the deviation of the DC set voltage by a DC voltage signal corresponding to the AC input voltage of the forward converter; a Hall CT for detecting the AC input current of the forward converter; and a detected current of the Hall CT. An input of a power conversion device characterized in that the input device comprises means for inputting a deviation between a DC voltage signal corresponding to the above and a multiplied signal by the multiplication means, and outputting a pulse signal as a control signal to the DC power adjustment section. Power factor adjustment device.