JPS6082998U

JPS6082998U - Secondary excitation control device for wound induction motor

Info

Publication number: JPS6082998U
Application number: JP1983175434U
Authority: JP
Inventors: 宏樹長谷川; 尚森下
Original assignee: 株式会社東芝
Priority date: 1983-11-15
Filing date: 1983-11-15
Publication date: 1985-06-08

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図は従来の二次励磁制御装置の一例を示す系統図、
第２図は第１図におけるトランスのタラ゛　プ切換を示
す回路図、第３図は電動機の速度とトランス二次電圧お
よび二次電流との関係を示す特性図、第４図は本考案の
一実施例を示す系統図、　。第５図は第４図におけるタップ切換を示す回路図である
。１・・・交流電源、２・・・巻線形誘導電動機、３・・
・トランス、３Ｐ・・・トランス−次巻線、３Ｄ・・・
トランス二次巻線（デルタ）、３Ｓ・・・トランス二次
巻線（スター）、４−１ｄ、４−２ｄ、４−Ｉｓ、４−
２ｓ・・・二次タップ切換用開閉器、４−１．４−２、
４−２Ａ・・・−次タツブ切換用開閉器、５−１．５−
２・・・整流器、６−１．６−２・・・直流リアクトル
、７−１．７−２−・・インバータ、８・・・インバー
タトランス。Figure 1 is a system diagram showing an example of a conventional secondary excitation control device.
Fig. 2 is a circuit diagram showing the tap switching of the transformer in Fig. 1, Fig. 3 is a characteristic diagram showing the relationship between motor speed and transformer secondary voltage and secondary current, and Fig. 4 is a circuit diagram showing the transformer tap switching in Fig. 1. A system diagram showing one example. FIG. 5 is a circuit diagram showing tap switching in FIG. 4. 1... AC power supply, 2... Wound induction motor, 3...
・Transformer, 3P...Transformer - next winding, 3D...
Transformer secondary winding (delta), 3S...Transformer secondary winding (star), 4-1d, 4-2d, 4-Is, 4-
2s...Secondary tap switching switch, 4-1.4-2,
4-2A...-Next tab switching switch, 5-1.5-
2... Rectifier, 6-1.6-2... DC reactor, 7-1.7-2-... Inverter, 8... Inverter transformer.

Claims

[Scope of utility model registration request]

A secondary excitation control device for a wound induction motor in which the secondary side of the wound induction motor is connected to a secondary excitation device via a transformer, and the secondary power is returned to an AC power source to control the motor speed. In addition to providing a tap on the primary side of the
A tap switching switch and a series resistor are provided, and as the motor speed increases or decreases, the primary side of the above transformer can be connected to all taps, through the series resistor to the intermediate tap, to the intermediate tap without a series resistor, or vice versa. A secondary excitation control device for a wound induction motor, characterized in that switching is performed in the following order.