Speed control of dc motor drive system using choppers by. Keywordsdc motor, speed control, dc chopper, separately excited dc motor and current. While control of the induction machine is considerably more complicated than its dc motor counterpart, with continual advancement of microelectronics, these control complexities have essentially been. Chopper fed dc motor drive speed control of dc motor file. The chopper circuit receives a signal from the firing circuit and then gives a signal to the armature voltage controller of the separately excited dc motor and the speed is accordingly increased or decreased. Pdf design and implementation speed control system of dc motor. The idea of a speed control system is to maintain the speed of the motor at the desired value under various condition. The speed control system was implemented for a permanent magnet dc motorpmdc.
Dc motor chopper control 1 creation of a dc permanent magnet motor simpower block in library. Speed control of dc motor using pulsewidth modulation. By varying the flux, and by varying the current through field winding. The motor can be run as low as 2% to as high as 98% of the duty cycle. One of the popular methods of speed control of dc motor is using chopper. Some of the examples are in treadmill machine it is required to vary the speed of motor that used to roll the belt the speed. View badges you can earn by participating in the file exchange community. In this lesson we discuss speed and position control with dc motors. Program interface is user friendly enabling flexible and simple operation. Motor speed can be controlled by controlling armature voltage va armature current ia.
Speed control of dc motor is the most important feature we interest in, when we control the speed we vary it according to the requirements and the operation we need. Selfcommutated devices directly on or off devices via gate like mosfet, igbt, power transistors, gto and igct are used for making choppers because they can be commutated by low power control signal and do not need commutation circuit. At the same time the dc motor drive is less complex compare to ac motor drives. Stay connected to your students with prezi video, now in microsoft teams. This paper presents modelling and numerical simulation as well as prototype for speed control of dc series motor using a dc chopper. The proportionalintegral type controller is used for controlling. Speed control of dc motor dc motor speed control speed control methods of a dc motor can be varied by varying flux, armature resistance or applied voltage.
Feb 22, 2012 my homework is to analysis the function of chopper fed dc motor drives every part. Now, to get stable and high speed control of dc motor, the overall chopper simulink model is done and analyzed in matlab simulink and. Conventional methods for starting and speed control of singlephase induction motor need often quite expensive external electrical equipment. The model simulates chopper fed dc motor drive for speed control of dc motor. Eee322 course project dc motor speed control by using chopper circuit 2. The dc motor speed control has been successfully analyzed using chopper as a power controller and speed and current controller proportionalintegral type based on the closed loop model of dc motor. Thus in this paper, ac chopper is implemented to control the speed of single phase induction motor by using 3 asymmetrical pwm method. The complex motor system is composed of a dc motor drivera tachogenerator. The pulsewidth modulation method of control of semiconductor devices can help in controlling the output voltage of dc drives in.
Design and implementation of pid controller for a two. Chopper circuit is basically a first quadrant buck converter. The firing circuit of chopper receives signal from controller and variable voltage is given to the armature of dc motor according to the desired speed. You can sense the effect of speed control of dc motor in the movement of robotic. Speed control of dc motor using pi controller is presented. I feel that i need the insulation because i read that this type of motor isnt designed to work at more than 3v arduino works at 9v if i have read correctly. My homework is to analysis the function of chopper fed dc motor drives every part. Control motor speed with a computer algorithm microcontroller 12 vdc motor ac tachometer amplifier 9 vdc power supply signal conditioning frequency. Speed control of dc motor using chopper presented by.
Jul 30, 2017 4 simple life hacks drill machine and screwdriver life hacks dc motor duration. Design a speed controller for a dc motor using pulsewidth modulation pwm. Pdf chopper fed speed control of dc motor using pi. Aug 27, 2015 so it is the basic type of speed control of dc motor.
Dc motor speed control using chopper circuit hackster. The speed of a dc motor has been successfully controlled by using chopper as a converter and proportionalintegral type speed and current controller based on closed loop system model. This chopper circuit is simple square wave generator which can be easily built using 555. Abstract the aim of the paper is to control the separately excited dc motor by using the igbt based chopper. Dc motor speed control using chopper knowledge never ends. Speed control of single phase induction motor using ac.
Mar 18, 2016 1 dc motor speed control using chopper. Some of the examples are in treadmill machine it is required to vary the speed of motor that used to roll the belt the speed of dc motor used in railway engines traction. I want the pwm to be controlled by a potentiometer. An ebook reader can be a software application for use on a computer such as microsofts free. The dc motor whose speed is to be controlled using the pid controller in the fig. Chopper fed speed control of dc motor using pi c ontroller doi. Dc motors are widely used in industry because of its low cost, less complex control structure and wide range of speed and torque. Speed control of dc motor using chopper linkedin slideshare. Dec 10, 2017 speed control of dc motor dc motor speed control speed control methods of a dc motor can be varied by varying flux, armature resistance or applied voltage. There are several methods to control dc motor speed one of them is chopper circuit. Design and simulation of speed control of dc motor using. This paper presents the speed control methodology by varying armature voltage using chopper as a converter. The purpose of a motor speed controller is to take a signal representing the required speed, and to drive a motor at that speed.
By varying the armature voltage, and by varying the armature resistance. Here, in this tutorial i will explain about how can make a program for dc motor speed control in matlab by creating a gui having different buttons on it to control the direction of rotation of the dc motor as well as the speed of the dc motor by sending different commands through the serial port. Download a free power electronics control design trial. Dc motor with speed and current closed loops, driven by etpu on mcf523x, rev. The pmdc consists of rotor or armature and a stator, which is a permanent magnet. For knowing more about speed control of dc motor please sea this video.
A brushed dc electric motor is an internally commutated electric motor designed to be run from. Control of dc motor using chopper but the combination of various papers clearing the concept about speed control methods of a dc machine. There are four different quadrants operation of dc motor implement. February 5, 2002 have been shown to be more than a match for dc drives in highperformance applications. Initially a simplified closed loop model for speed control of dc motor is considered and requirement of current controller is studied.
The variable dc voltage is controlled by varying the on and offtimes of a converter. Hill, dc motor control using mosfet, proc, ieee, pp. Speed control of dc motor using pulse wi authorstream. Dc motor speed control is an important industrial application. Speed control of separately excited dc motor using chopper.
In this report, we have implemented a dc motor speed control system. In a circuit known as a chopper, the average voltage applied to the motor is. But my teacher shows that the model is contrling the speed and the current simutaneously. In this method, the magnetic flux due to the field windings is varied in order to vary the speed of the motor. Speed control of dc motor full guide for controlling the. Pdf spanin this paper, we first write a description of the operation of dc motors taking into account which parameters the speed depends on.
Speed control of dc motor using chopper slideshare. Speed control techniques in sep a rtely ex i td dc mo o. This projects deals with the speed control of separately excited dc motor with a high performance manner. Speed control of dc motor using mosfet based chopper a. The thyristorconverter offers greater efficiency, faster response, lower maintenance, smaller size and smooth control. Design of plc based speed control of dc motor using pi controller free download abstract the purpose of this research is to analyzeimplement pi control for a simple dc shunt motor. The duty cycle is defined as the percentage of digital high to digital low plus digital high pulsewidth during a pwm period. Dc motor speed control system the speed control of a motor is frequently required in industrial applications, robotics, home appliances, etc. I want to be able to adjust the speed of it using pwm. Initially a simplified open loop model for dc motor is studied and then closed loop model is considered and required of current controller is studied. It simply chops fixed dc and generates variable dc. Design and implementation of pid controller for a two quadrant chopper fed dc motor drive rahul v. Chopper control of separately excited dc motor the chopper converts the fixed dc voltage to variable dc voltage. Design and simulation of speed control of dc motor using chopper.
Choppers are widely used in trolley cars, battery operated vehicles, traction motor control, control of large number of dc motors, etc. Dc motor speed control using chopper engineers garage. In many different applications it is required to control speed of dc motor. In this project using chopper as a converter, the speed of a dc motor is to be controlled. Speed of dc motor can be varied by following methods armature voltage control for below base speed field flux control for above base speed armature resistance control here, we are using armature voltage control method for speed control. Due to this the speed can be controlled for below rated speed and speed above the rated speed, respectively. Let us first understand how it generates variable dc. The control algorithm is realized using a programmable logic controller. Unfollow dc motor speed control to stop getting updates on your ebay feed. The optimization of speed controller is done using modulus hugging approach, in order to get stable and fast control of dc motor.
Brushed dc motors can be varied in speed by changing the operating. Adle and rajesh rane accepted 22 july 20, available online 01 august 20, vol. International journal on recent technologies in mechanical. Pdf chopper fed speed control of dc motor using pi controller. Pulsewidth modulation pwm or dutycycle variation methods are commonly used in speed control of dc motors. Speed control of dc motor, dc motor speed control the.
There are two ways actually 3 ways i know of, to control a dc motor of this kind. Dc choppers also provide variable dc output voltage from a fixed dc input voltage. He has 8 years of experience in customer support, operations and administration. Choppers are widely used in trolley cars, battery operated vehicles, traction motor control, control of. Pdf speed control of separately excited dc motor using. Speed control of dc motor dc motor speed control youtube. Sep 06, 20 dc motor control by using a chopper circuit 1. Chopper fed dc motor drive speed control of dc motor. You can sense the effect of speed control of dc motor in the movement of robotic vehicles, movement in elevators, movement in paper mils and so on when different types of dc motors. Conclusion the dc motor speed control has been successfully analyzed using chopper as a power controller and speed and current controller proportionalintegral type based on the closed loop model of dc motor. The speed of separately excited dc motor can be control by changing the armature voltage and changing field flux. Dc motor speed control using chopper knowledge never. The input dc voltage can be increased stepup or decreased stepdown in output side so a dc chopper circuit can be considered as dc equivalent to an transformer.
Study of speed control of dc series motor using dc chopper. With the the increasing use of power semicondutor units, the speed control of dc motor is increasingly getting sophisticated and precise. The complete layout of dc drive mechanism is obtained. Dc motor modeling along with buck chopper modeling is presented. Dc motor with speed and current closed loops, driven by etpu. By varying the armature voltage for below rated speed. Chopper is a device that gives variable dc output from applied fixed dc input. There are two ways of speed control for a dc motor, field control in this method, the eld current or current through stator is varied to control the speed of the motor. Theory dc motors are widely used in robotics for their small size and high energy output. In this project the mathematical model for the speed control of dc motor using mosfet based chopper is designed and tested through the matlabsimulink software. Speed control of a dc motor using pwm video matlab.
Keywords dc motor, speed control, dc chopper, separately excited dc motor and current. Design of optimized speed controller of dc motor using. We simulate the operation of dc motor in open loop as well as closed loop. This paper describes a matlabsimulink realization of the direct current dc motor speed control method by controlling the voltage applied to the field circuit of a. Chopper control of separately excited dc motor circuit globe. Speed control of dc motor using mosfet based chopper. Introduction of dc motor control using igbt chopper. Dc motor with speed and current closed loops, driven by. The speed control system was implemented for a permanent magnet dc motor pmdc.
Presentation on ieee topic, speed control of dc motor using triac. Just follow the documentation from the drivers website. Since we control the average armature voltage, speed could be control only below the rated speed. The pulsewidth modulation method of control of semiconductor devices can help in controlling the output voltage of dc drives in turn controlling the speed for a wide range. The application meets the following performance specifications. Chopper control of dc motor file exchange matlab central.
Tarun agarwal is the chief customer support officer at edgefx technologies pvt ltd. The designing of current and speed controller is carried out. By varying field flux should to achieve speed above the rated speed. By varying field flux should to achieve speed above the.
1367 269 242 1014 1073 747 115 1468 260 706 271 1594 168 1546 534 736 203 1494 1396 1415 367 794 779 914 142 390 744 819 137 740 348 438 923 1199 1024