Speed control of dc shunt motor using pwm pdf

Speed control of a dc motor using microcontroller 8051 a project report submitted by s. We apply this technique in our project so as to control the speed of the dc motor. Introduction in recent years, dc motor have been widely applied as an. Speed control of any motor is always done y pulse width modulation, abbreviated as pwm. Arduino is directly connected to pc through the usb cable and command is given to arduino on serial monitor of the arduino ide. Variable speed ac motor adjustable speed drives are known as inverters, variable frequency drives vfd, or adjustable speed drives asd. This speed control is achieved through constant frequency control or variable frequency control. If you are new to electronics, we have a detailed article explaining pulse width modulation. Controller used tv remote control to send data to atmega16 microcontroller through the ir receiver. Automatic speed controller of a dc motor using arduino. The dc motor whose speed is to be controlled using the pid controller in the fig. Dc motor speed control is carried out by use of four insulated gate bipolar transistors are used with pwm pulse width modulation chopper for speed control of the motor and the igbt triggering is carried out by varying armature voltage, field voltage.

Hello friends here is a proteus simulation of speed control of dc motor with the help of pulse width modulation pwm control, pwm signals are generated by 8051 microcontroller. The speed control of direct current dc motor for various applications is very important. The speed of the motor can be controlled by applying the various voltages across the armature. You need to power the field and armature separately. In this paper, a digital speed control of dc motor using pulse width modulation. Dc motor speed control in matlab the engineering projects. Automatic speed controller of a dc motor using arduino, for. I hope it will help me a lot to understand the speed control technique of dc motor. Apr 10, 2017 in this tutorial, i have controlled its speed as well by providing different voltage levels at the enable pin of the dc motor control driver l298. The typical drones we hear about or see around us are most often hobby related. In this chapter, speed control of a dc motor using pulse width modulation pwm technique is described. Circuit diagram of dc motor speed control using arduino is shown in the figure below. Why is pwm used to control dc motor speed instead of using a variable resistance.

Aug 06, 2014 doc speed control of a dc motor using micro controller 8051 1. Speed control of a dc motor using pic microcontroller with. Categories 2011 latest ece projects, ece and eee project abstracts, electrical projects, electronics abstracts, electronics projects topics. Sir i want to control the speed of 220v dc shunt motor using same technique. Speed control methods of dc shunt motor my tech info. By adjusting the duty cycle of pulse from pulse width modulation technique simultaneously the terminal voltage of motor is change and hence speed will be varied with terminal voltage. Below in summary charts torque to duty cycle are presented in the cases scenarios. This command controls the l293d driver ic to control the direction and speed of a dc motor. The duty cycle is defined as the percentage of digital high to digital low plus digital high pulsewidth during a pwm period. Before going into the further details i would like to tell you about the concept of pwm for controlling dc motor. The scr a and b rectifier, the op voltage of transformer t1 and apply this pulsating dc voltages to the armature winding and rectifier c supplies similar voltages to the motor field winding. This is different to speed regulation where the speed is trying to be maintained or regulated against the natural change in speed due to a change in the load on the shaft. Keywords dc shunt motor, optical encoder, pulse width modulation pwm, hbridge using.

Thus we conclude that the pwm technique is the most efficient for controlling the speed of the dc motor. Speed control of dc shunt motor using microcontroller. Digital speed control of dc motor for industrial automation using. We have explained pwm in this tutorial using 2 examples which will help you learn how to control led brightness using pwm and how to control dc motor speed using pwm. Speed control for dc motor with pulse width modulation. Dc motor speed control using arduino the engineering projects. Motorcontrol considerations for electronic speed control in. Speed control of electrical motors is an old but evergreen topic in industries. In the previous projects, we have seen a simple dc motor control using lpc2148 and push buttons and also controlling of a servo motor using the same components. Speed control of dc motor using pwm technique pdf projects. Effects of pwm chopper using igbt on the torque and speed. Pdf digital speed control of dc motor for industrial automation. It works on the principle of lorentz force by which the current carrying conductor in a magnetic field experiences a force hence the conductor moves on the direction of force called.

However, the potential of using drones for commercial use started several years ago. Shuntwound motors are used in industrial and automotive applications where precise control of. The microcontroller at89s52 is used to control the dc motor speed. Speed control behavior with pwm the motor will see a very low power supply impedance, even though the power supply is constantly switching between high and low voltages. Pwm pulse width modulation pwm is a method for binary signals generation, which has 2 signal periods high and low. Veermata jijabai technological institute 4 speed control of dc motor by using pwm technique v saturating field m shunt motor v series field m series. Speed control of dc motor using pulsewidth modulation. Dc motor speed control is carried out by use of four quadrant chopper drive. There are many different ways to control the speed of dc motors but one very simple and easy way is to use pulse width modulation. Pwm pulse can be generated using arduino and l298 enable pin is used to get that pwm pulse and then it controls the motor speed accordingly. In industry dc motor is widely uses for speed control and load. In particular requirement, setting a speed dc motor as the driving equipment must be performed remotely. Towards to establish speed control, many tested have been taken place.

So can you please me what all the changes i need to make in the circuit as well as the code for the microcontroller. The pot has a travel of about 300 degrees, but uses about 60 degrees, from minimum to maximum speed. Download speed control of dc motor using pwm technique pdf. Unipolar pulse width modulation is suitable for cases where the reversal of motor direction is not required. 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. Speed control of dc motor using pulse width modulation, 555.

Pulse width modulation used for motor control electronicstutorials. Working principle from the above circuit diagram, we can conclude that if we want to increase the speed of the shunt motor, we will vary the field resistance. Speed control of dc motor using pulse wi authorstream. Speed control for dc motor with pulse width modulation pwm. So, lets get started with dc motor speed control using arduino uno. Speed control of a dc motor is either done manually by the operator or by means of an automatic control device. Brushed dc motor fundamentals microchip technology.

As resistance increased, the value of the field current will reduce. Dc shunt motors are considered appropriate for most. Dc motor speed control using arduino the engineering. Arduino is directly connected to pc through the usb cable and command is. Since the speed is directly proportional to the applied voltage across the armature will be nearly proportionate to the applied voltage across armature.

Dc shunt motors are considered appropriate for most industrial control due. Pdf speed control of dc motor by using pwm technique project. The motor winding acts as a low pass filter so a pwm waveform of sufficient frequency will generate a stable current in the motor winding. 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.

Generally, a dc motor consists of either an electromagnet or a permanent magnet and a wounded coil known as the armature. Apr 16, 2017 you need to power the field and armature separately. Under that condition, conducted a research on a dc motor speed control with pulse width modulation pwm method of the infrared remote control. It will be helpful to vary the speed of the dc motor in either clockwise or in anti clockwise direction.

Speed control methods of a dc motor can be varied by varying flux, armature resistance or applied voltage. The speed control of dc series motor by using chopper is shown in the figure a. The pot is what is supplied with the control from the manufacturer. Dc motor speed control using pic microcontroller pwm method. Sixstep inverter pulse widthmodulation vector flux. Pdf precise speed control is an important requirement for efficient industrial automation. Direct current is applied to the armature by means of a carbon brush or by means of electromagnetic induction. Speed control of dc motor using pwm a dc motor is an electromechanical device that converts direct current into mechanical energy by means of rotation of a shaft. Only difference is that and additional motor driver circuit using a transistor is included in the circuit. Rohit naik 07241a0247 in partial fulfillment for the award of the degree of bachelor of technology in electrical and electronics engineering gokaraju rangaraju.

Here is a simple pwm motor speed controller circuit that can be used for varying the speed of low power dc motors. In this project dc motors speed is controlled by sending the command through pc. Todays industries are increasingly demanding process automation in all sectors. Speed control of dc motor dc motor speed control youtube. Speed control of dc shunt motor with field and armature rheostat control 79 2. The speed of dc motor can be control by usingscrin ac circuit as shown in the below figure. Another set up consisted of half bridge rectifier consisting of thyristor wherein the speed control for the same dc motor was carried out using the firing angle of the thyristor. The working principle and program of this circuit is same as that of the led brightness control. Pulsewidth modulation pwm or dutycycle variation methods are commonly used in speed control of dc motors. Pwm just turns on and off the motor very quickly, so if you want the motor to go slowly, the duty cycle ratio of on to off time has to be more off than on. This can be achieved by changing the field current. The field of the shunt motor is supplied from a constantvoltage exciter e. The set up for speed control of dc shunt motor using flux control technique is shown in the figure. Speed control of dc motor with pc interface is an easy diy project.

The characteristics of a dc shunt wound motor give it very good speed regulation, and it is classified as a constant speed motor, even though the speed does slightly decrease as load is increased. The result is that the motor has a much higher torque. Pdf speed control of dc motor by using pwm technique. Speed control of dc motor by pwm in proteus simulation. Doc speed control of a dc motor using micro controller 8051. Speed control of dc motor using pulse width modulation submitted by shakti mohan patnaik063261 abinash padhi063273 ritesh kumar lenka063262. Different speed control methods for different dc shunt and series methods are there. Speed control of dc shunt motor using microcontroller and. In order to change the speed, we have to change flux. Therefore the voltage drops i a r a will be negligible as compared to the external supply voltage v.

Speed control of dc motor full guide for controlling the. The motor sees this as a lower overall dc input voltage, and slows down. These devices control the motor speed by adjusting either the voltage applied to the motor armature, the field current, or both 6. In general, the field gets constant voltage, and the armature gets variable voltage to control the speed. What are the best ways to control the speed of dc motor. Apr 08, 2018 in this project, i will show how speed control of dc motor can be implemented using 555 and pulse width modulation pwm. Pwm control using arduinohow to control dc motor and led. Another set up consisted of half bridge rectifier consisting of thyristor wherein the speed control for the same dc motor was carried.

The variable speed drives, which can control the speed of a. In this project, i will show how speed control of dc motor can be implemented using 555 and pulse width modulation pwm. We use dc motors in many systems in our day to day life. Voltage control can be via a mosfet pwm circuit, or for mains powered application, scrs. Simulation of dc shunt motor is specially designed to test and implement the proposed control schemes using matlab version 7. The dc motor does not get any voltage when chopper ch is switched off. Ac induction motor speed control so what can we do to control the speed of an ac induction motor. Pulse width modulation pwm or dutycycle variation methods are commonly used in speed control of dc motors.

Keywords dc shunt motor, speed control, wavelet neural network, pso. As we have discussed earlier that proteus is a really good simulation software for beginners and 8051 is the most basic among all microcontroller so this. Why is pwm used to control dc motor speed instead of using. Speed control the speed of a bdc motor is proportional to the voltage applied to the motor. These methods provide higher efficiency, greater reliability, quick response, higher efficiency. The variation in speed is achieved by varying the duty cycle of the pulse supplied to drive the motor. Jul 11, 2019 speed control of a dc motor is either done manually by the operator or by means of an automatic control device. Speed control of dc shunt motor with field and armature. Effects of pwm chopper using igbt on the torque and. Speed control of dc motor using pulse width modulation submitted by shakti mohan patnaik063261 abinash padhi063273 ritesh kumar lenka063262 eie, 7th sem under guidance of mr. When using digital control, a pulse width modulated pwm signal is used to generate an average voltage. When chopper ch is switched on, the dc motor gets input supply voltage v dc.

A 240v dc shunt dc motor has an armature resistance of 0. Motorcontrol considerations for electronic speed control. Speed control methods of dc motor shunt, series motors. A bidirectional dc motor speed control can be achieved using the hbridge integrated. In this project, we will control the speed of a dc motor using lpc2148 mcu and a potentiometer by implementing pwm technique. In this article we explain how to do pwm pulse width modulation control using arduino. To study the methods of controlling the speed of shunt dc motor. Motor control considerations for electronic speed control in drones introduction drones are all around us. To calculate the speed of a dc motor, perforated disk attached to the motor shaft is. Automation results into better quality, increased production an reduced costs. For example, cpu fans, fume extinguishers, toy cars etc.

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. Dec 10, 2017 speed control methods of a dc motor can be varied by varying flux, armature resistance or applied voltage. By adjusting the duty cycle of pulse from pulse width modulation technique simultaneously. Speed control of dc series motor by chopper electrical. Motorcontrol considerations for electronic speed control in drones introduction drones are all around us. By using shunt field regulator intermediate speed can be obtained in this method.