JPS58193783U

JPS58193783U - phase control rectifier circuit

Info

Publication number: JPS58193783U
Application number: JP8689682U
Authority: JP
Inventors: 山岸　政章; 大記小林
Original assignee: 菊水電子工業株式会社
Priority date: 1982-06-11
Filing date: 1982-06-11
Publication date: 1983-12-23
Also published as: JPH0218704Y2

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

[Brief explanation of drawings]

第１図は従来の三相整流回路の一例を示すブロック図、
第２図は第１図に示す三相整流回路の波形図、第３図は
本考案の一実施例を示すブロック図である。　　　　　
・ＣＲ□〜ＣＲ６・・・サイリスク、ＲＥＧ・・・直列安
定化回路、Ｇ）・・ゲート制御回路、ＤＳ・・・ゲート
回路、Ｓｕ。Ｓｖ、　５ｗ−４７プルホ一ルド回路、Ｒｕ、　Ｒｖ、
　Ｒｗ・・・ランプ波発生器。Figure 1 is a block diagram showing an example of a conventional three-phase rectifier circuit.
FIG. 2 is a waveform diagram of the three-phase rectifier circuit shown in FIG. 1, and FIG. 3 is a block diagram showing an embodiment of the present invention.
・CR□~CR6...Sirisk, REG...Series stabilization circuit, G)...Gate control circuit, DS...Gate circuit, Su. Sv, 5w-47 pull hold circuit, Ru, Rv,
Rw...Ramp wave generator.

Claims

[Scope of utility model registration request]

Three sets of series circuits each having two thyristors connected in series are provided, each phase of the three-phase alternating current is connected to the series connection point of each of the series circuits, and each end of the series circuit is connected in parallel to form a smoothing circuit. in which the DC output voltage is controlled by controlling the phase of the thyristor, and the ripple component of the DC output is synchronized with the gate signal that causes each phase of the thyristor to arc. a gate circuit that supplies the sample-and-hold circuit to each phase's sample-and-hold circuit; a ramp-wave generator that generates a ramp wave that is synchronized with the three-phase alternating current and has a slope that corresponds to the sample-and-hold value of the sample-and-hold circuit; and this ramp wave generator. The ramp wave given from the above is compared with a reference voltage set according to the desired DC output voltage, and based on this comparison output, the ignition period of the phase with the large ripple component is shortened, and the phase with the small ripple component is ignited. A three-phase rectifier circuit equipped with a gate control circuit that allows the ignition period to be long.