JPS586599U

JPS586599U - Excitation device for alternator

Info

Publication number: JPS586599U
Application number: JP8560682U
Authority: JP
Inventors: 寺嶋　正之; 敬一田中
Original assignee: 株式会社明電舎
Priority date: 1982-06-09
Filing date: 1982-06-09
Publication date: 1983-01-17

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図は本考案による一実施例を示す具体的な回路図、
第２図はその定常時の動作を示すタイムチャート図。ＡＧは発電機の電機子、Ｆ□はその界磁巻線、ＥＸは交
流励磁機、Ｆ２．Ｆ３はその界磁巻線、Ｒｆ２は回転整
流器、ＡＶＲは自動電圧調整装置、Ｒｆ、。Ｒｆ３は整流回路、Ｓは４イリスタ、ＤＥＴは短絡事故
検出装置、ＣＴは電力用変流器、Ｔは電圧検出用変成器
。FIG. 1 is a specific circuit diagram showing an embodiment of the present invention,
FIG. 2 is a time chart showing the normal operation. AG is the armature of the generator, F□ is its field winding, EX is the AC exciter, F2. F3 is its field winding, Rf2 is a rotating rectifier, AVR is an automatic voltage regulator, Rf. Rf3 is a rectifier circuit, S is a 4-iristor, DET is a short circuit fault detection device, CT is a power current transformer, and T is a voltage detection transformer.

Claims

[Scope of utility model registration request]

(1) It has two sets of field windings, one field winding is excited with the excitation power obtained by rectifying the current component taken out by the first rectifier circuit, and the other field winding The armature of an AC exciter is excited by rectifying the extracted voltage component in a second rectifier circuit and automatically adjusting the rectified output with an excitation power that is automatically adjusted by a command signal from an automatic voltage regulator. In a device in which the field winding of the main engine is excited by the excitation power rectified by the third rectifier circuit, the output is connected in parallel between the terminals of the first rectifier circuit and is not required during normal operation. The ignition is controlled to provide the base amount of excitation power that is applied to the generator, and the excitation power applied to one of the field windings is increased when the load is short-circuited (the voltage between the terminals of the thyristor that is controlled to extinguish and the generator is monitored). A short-circuit detection device that detects a short-circuit on the load side, a relaxation oscillation circuit that can arbitrarily vary the oscillation cycle, and controls the firing of the thyristor using the oscillation output, and a fault signal output from the short-circuit detection device. 1. An excitation device for an alternator, comprising a circuit for stopping oscillation of a relaxation oscillation circuit, and a circuit for stopping oscillation of a relaxation oscillation circuit.

(2) The first rectifier circuit has a configuration in which diodes ° are connected in a single-phase bridge, and in this case, the thyristor connected in parallel to the first rectifier circuit is simply an ordinary thyristor element.Registered as a utility model. An excitation device for an alternator according to claim 1.

(3) The first rectifier circuit has a configuration in which only diodes are connected in a three-phase bridge, and in this case, the thyristor inserted on the DC output side of the first rectifier circuit is a normal thyristor element. An excitation device for an alternator according to claim 1, wherein the thyristor is forcibly extinguished by a forced extinguishing circuit.

(4) The first rectifier circuit has a configuration in which only diodes are connected in a three-phase bridge, and in this case, the thyristor inserted on the DC output side of the first rectifier circuit has a gate of 0N-
An excitation device for an alternator according to claim 1, which applies a gate turn-off thyristor that can be turned off.