JPS5844617U

JPS5844617U - power control device

Info

Publication number: JPS5844617U
Application number: JP13808381U
Authority: JP
Inventors: 正雄山田
Original assignee: 日本電気株式会社
Priority date: 1981-09-17
Filing date: 1981-09-17
Publication date: 1983-03-25

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 the drawing]

第１図は従来の電力制御装置の構成を示すブロック図、
第２図は第１図に示された従来の装置の動作を説明する
ための波形図、第３図は本考案の一実施例を示すブロッ
ク図、第４図はその動作を説明するための波形図、であ
る。なお図において、Ｅ・・・交流電源、１・・・負荷、２
、　・・・サイリスタ、３，５・・・全波整流回路、４
・・・零交差回路、６・・・積分回路、７・・・基準電
圧発生回路、”８・・・比較器、９・・・ランプ波形発
生回路、１０゜１１．１８・・・変成器、１５・・・標
本化回路、１６・・・Ａ／Ｄ変換器、１７・・・位相制
御回路、である。FIG. 1 is a block diagram showing the configuration of a conventional power control device.
Fig. 2 is a waveform diagram for explaining the operation of the conventional device shown in Fig. 1, Fig. 3 is a block diagram showing an embodiment of the present invention, and Fig. 4 is a waveform diagram for explaining the operation. This is a waveform diagram. In the diagram, E...AC power supply, 1...Load, 2
, ...Thyristor, 3,5...Full wave rectifier circuit, 4
...Zero crossing circuit, 6...Integrator circuit, 7...Reference voltage generation circuit, ``8...Comparator, 9...Ramp waveform generation circuit, 10゜11.18...Transformer , 15... sampling circuit, 16... A/D converter, 17... phase control circuit.

Claims

[Scope of utility model registration request]

(1) In an AC power control device that includes an AC power source and a thyristor connected in series with a load, a zero-crossing circuit that generates a pulse at the zero point of the AC power source, and a voltage value of the AC power source that is sampled and held at any time. a sampling circuit, an A/D conversion circuit that converts the sampling output, and a phase control circuit to which the zero crossing circuit and the output of the A/D conversion circuit are connected; A power control device characterized in that a firing angle of the thyristor is controlled according to an output of a conversion circuit.