The basic principle of the DC motor is a device which converts DC energy into mechanical energy. When the current carrying armature is connected to the supply end though commentator segment, brushes are placed within the North South Poles of permanent or electromagnets. By using these electromagnets operating principle is depends on the Fleming s left hand rule to determine the direction of the force acting on the armature conductors of the DC motor.

Speed Control Methods of a DC Motor

Speed of a DC motor can be varied by varying flux, ....etc

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hi
please go through the below thread for more details on 'Speed Control of D.C shunt motor using four Quadrant Chopper'

http://seminarsprojects.net/Thread-four-quadrant-chopper-drive-for-universal-dc-motor?pid=29049 ....etc

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chopper fed dc motor drive



INTRODUCTION

Development of high performance motor drives are very essential for industrial applications. A high performance motor drive system must have good dynamic speed command tracking and load regulating response. DC motors provide excellent control of speed for acceleration and deceleration. The power supply of a DC motor connects directly to the field of the motor which allows for precise voltage control, and is neces ....etc

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DC MOTOR CONTROL USING CHOPPER


ABSTRACT

The speed of separately excited DC motor can be controlled from below and up to rated speed using chopper as a converter. The chopper firing circuit receives signal from controller and then chopper gives variable voltage to the armature of the motor for achieving desired speed. There are two control loops, one for controlling current and another for speed. The controller used is Proportional-Integral type which removes the delay and provides fast control. Modeling of ....etc

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hi
please go through the below thread for more details on 'Speed Control of D.C shunt motor using four Quadrant Chopper'

http://seminarsprojects.net/Thread-four-quadrant-chopper-drive-for-universal-dc-motor?pid=29049 ....etc

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to get information about the topic speed control of dc motor full report ppt and related topic refer the page link bellow

http://seminarsprojects.net/Thread-speed-control-of-dc-motor-using-pwm-technique

http://seminarsprojects.net/Thread-dc-motor-speed-control-using-bluetooth

http://seminarsprojects.net/Thread-speed-control-of-dc-motor-by-using-pid

http://seminarsprojects.net/Thread-speed-control-of-dc-motor-using-pulse-width-modulation

http://seminarsprojects.net/Thread-pwm-based-speed-control-of-dc-motor-using-8052-controller

http://s ....etc

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I need Circuit diagram of this(speed control of d c shunt motor using four quadrant chopper ) Project and source code and also complete description ....etc

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construction and working of four quadrant chopper pdf

Abstract

In chopper circuits, unidirectional power semiconductors are used. If these semiconductor devices are arranged appropriately, a chopper can work in any of the four quadrants. we can classify chopper circuits according to their working in any of these four quadrants as type A, type B, type C, type D and type E. Let us now take a look of these classifications and the characteristics of various classifications.

Type A Chopper or First Quadrant Chopper

This type of chopper is s ....etc

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FOUR-QUADRANT CHOPPER DRIVE FOR UNIVERSAL DC MOTOR

#G-5, Ratna Complex, Ameerpet,
#310, OPP. Kalaniketan, Dilshukh Nagar


AIM:
The main aim of the project is to develop a speed control system for DC motor using four-quadrant chopper. Using four-quadrant chopper it is possible to demonstrate forward &reverse motoring and braking.
PURPOSE:
The purpose of the project is to implement a simple and cost effective process to control the speed of DC motors using the most popular technique four-quadrant ....etc

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