JPS5975793U

JPS5975793U - Regenerative braking control circuit for DC motor

Info

Publication number: JPS5975793U
Application number: JP16979782U
Authority: JP
Inventors: 昌克野村; 堀口　富生
Original assignee: 株式会社明電舎
Priority date: 1982-11-11
Filing date: 1982-11-11
Publication date: 1984-05-23

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]

図は本考案による直流電動機の回生制動制御回路の構成
図である。図において、１は電機子、２は界磁コイル、３は界磁コ
イル切換器、４１，４゜はプラギング電流用ダイオード
、５は直流電源、６，７は接触片、８は電機子端子切換
器、９は分流器、１０はサイリスタ、１１は転流コイル
、１２は転流コンデンサ、１４は通常時制御回路、１５
はＯＲ回路、１６はダイオード、１７はコンパレータ、
１８はトランジスタ、１９はＡＮＤ回路、２０はゲート
増巾器、２１はサイリスタ、２２はコンパレータ、２３
はトランジスタ、２４は駆動コイル、２５はダイオード
、２６はインバータ、２７はゲート増巾器、２８はサイ
リスタ、２９は増巾器、３０はアクセル、３１はコンパ
レータ、３２はＮＯＲ回路、３３は発振器、３４はＡＮ
Ｄ回路、３５はゲート増巾器である。The figure is a configuration diagram of a regenerative braking control circuit for a DC motor according to the present invention. In the figure, 1 is the armature, 2 is the field coil, 3 is the field coil switch, 41 and 4 degrees are the plugging current diodes, 5 is the DC power supply, 6 and 7 are the contact pieces, and 8 is the armature terminal switch. 9 is a shunt, 10 is a thyristor, 11 is a commutation coil, 12 is a commutation capacitor, 14 is a normal control circuit, 15
is an OR circuit, 16 is a diode, 17 is a comparator,
18 is a transistor, 19 is an AND circuit, 20 is a gate amplifier, 21 is a thyristor, 22 is a comparator, 23
is a transistor, 24 is a drive coil, 25 is a diode, 26 is an inverter, 27 is a gate amplifier, 28 is a thyristor, 29 is an amplifier, 30 is an accelerator, 31 is a comparator, 32 is a NOR circuit, 33 is an oscillator, 34 is AN
In the D circuit, 35 is a gate amplifier.

Claims

[Scope of utility model registration request]

A braking control circuit for a DC motor that applies a plugging current to a plugging current diode to perform braking by switching a field coil switch includes an armature terminal switch that switches the connection between the armature of the DC motor and a power source, and a field coil. and a chopper inserted in series between the DC motor and the power source, and a first setting in which there is a field current under plugging opening when plugging braking is applied by switching the field coil switch when braking the DC motor. By detecting that the value is above the value and that the plugging braking state is in effect, the armature terminal switch is switched to switch the armature terminal from the plugging braking position to the regenerative braking position, and the voltage generated in the armature is switched. The DC motor is put into a regenerative braking state by applying the plugging current to the DC power supply via the diode, and then the regenerative braking progresses to detect that the field current has become smaller than the second set value for plugging switching. a switching circuit that detects and switches the armature terminal switching device from regenerative braking to plugging braking; a thyristor that is connected to the field coil switching device and inserted in parallel with the field coil; A field coil short-circuit control circuit that fires a thyristor connected to the field coil switch and short-circuits the field current when switching the child terminal switch to the regenerative braking state; A regenerative braking control circuit for a DC motor, characterized in that a control circuit is added to detect this, and to control the chopper to change the field current so as to change the braking force of regenerative braking depending on the accelerator position.