Nmicroprocessor based control of electric drives pdf merger

Converters having electronic control feed an increasing number of drives. Dynamics and control of electrical drives electronic. Draw and explain the block diagram of microprocessor based ac drives. Computeraided design of the digital control of electric drives. The basic function of the drive is to control the flow of energy from the grid to process. The control system of the drive calculates the corresponding. However, it is essential to establish a modelbased control for. Pdf industrial electronics and electric drives a short. An electric motor is an electrical machine that converts electrical energy into mechanical. The system which includes an electric machine, a power converter, based on semiconductor switches, and several control devices is known as an electric drive. Understand how to specify the proper ac or dc motor for a machine design. They come with standard features that can be programmed to customize the drives performance to suit a wide variety of applications, and they include a digital display and operating and programming keys on a removable keypad. The thyristor dc drive remains an important speedcontrolled industrial drive. Electric drives and electromechanical systems richard crowder amsterdam boston heidelberg london new york oxford paris san diego san franciso singapore sydney tokyo butterworthheinemann is an imprint of elsevier.

What are merits and demerits of microprocessor based drive. Chapter 5 predictive control in power electronics and drives. For many years the motor controller was a box which provided the motor speed control and enabled the motor to adapt to variations in the load. Overview of advanced control strategies for electric machines. I would like to thank all the people at the department of industrial electrical engineering and automation at lund university for all the amusing discussions and the relaxed atmosphere.

A microprocessor based control system can also be built where a phase. Electrical powergenerating machines, which are used to drive powerconsuming machines, and electrical actuators control motors, servo drives, which are. Control in power electronics and electrical drives 1st. Energy management and control of electrical drives in hybrid. It can also be used most effectively by all those preparing for gate and upsc competitive examinations, as well as by practising engineers. A firing scheme based on a microcontroller to control an anti parallel connected single phase thyristor dual converter is presented. It is evident that it is rather involved and time consuming to design and develop a microprocessor based variable speed drive. Digital motion control techniques for electrical drives. Electrical drives and controls question papers anna university. Microprocessor and microcontroller based electrical drives are dc motor drives, induction motor drives and traction motor drives. Power supply units, electric heaters, lighting systems, energy supply plants, as well as electric drives are all widespread examples of power electronic systems. Predictive control in power electronics and drives. Torque control 152 speed control 152 overall operating region 154 armature voltage feedback and ir compensation 155 drives without current control 155 chopperfed d. Classification of electric drive generally classified into 3 categories.

Digital control of electric drives, volume 43 1st edition. The key element in the proposed system is the wide area realtime protection and control information platform, which not only enables the merger of three lines of defence for power system. The dc motor is very difficult to contr ol unlike the stepper motor, which can be controlled by giving the appropriate control word. Electric drives full notes, pdf, ebooks, all units. Electrical drives is defined as a form of machine equipment designs to convert electric energy into mechanical energy and provide the electrical or electronics control of the system. Providing a balanced treatment of the subject, electric machines and drives. Integrate the motor to a machine, based on analysis of motor equations for voltage, current, torque and speed. Power electronics and drives malaviya national institute of technology, jaipur page 6 optoelectronic devices and control, electronic circuits for photoelectric switchesoutput. Industrial electronics and electric drives a short overview article pdf available in international journal of industrial electronics and drives july 2014 with 4,471 reads how we measure reads. Model based predictive control of electric drives complete guide lecture classroom notes pdf. Nasar 2005 0849342201, 9780849342202 crc press, 2005 544 pages 2005 electric drives, second edition ion boldea, syed a.

Pdf real time control of electrical machine drives. Control techniques for electric drives, block diagram representation, transfer functions, transient response, frequency response and stability, compensating techniques. Electric drives motor controllers and control systems description and applications purpose. Aguilera and tobias geyer abstract in this chapter we revise basic principles and methods of model predictive control with a view towards applications in power electronics and drives. Com ponents of electrical drives the main components of a modern electrical drive are the motors, power processor, control unit and electrical source. International journal of engineering trends and technology. Electric drives control systems description and applications. Electrical drives, control, modeling, dc motor, permanentmagnet. The notable impact of vector control of ac drives on most.

International journal of engineering trends and technology ijett volume 16 number 4 oct 2014. Buying an energyefficient electric motor fact sheet pdf. Dc motor speed control using microprocessor technique. Ac and dc motors in machine tools, industrial robots. Dc motor speed control using microprocessor technique intoduction. Implement the motor and accompanying rotary sensor into a motor control circuit in both hardware and software.

Controlled rectifiers single phase and three phase fully controlled and semi. Adaptive refrigeration microprocessor based control of an inverted pendulum. Electrical drives play an important role as electromechanical energy converters a wide range of applications, for example machine tools in manufacturing industries, photocopies, cd player, electric windows in the car, prosthetic hands and other medical devices. One component defines the magnetic flux of the motor, the other the torque. Pancake motors are widely used in highperformance servocontrolled systems. Smaller and smarter the future of ac drives drives are becoming more intelligent, with better communications and are easier to install and control. A microprocessor scheme to control a naturally commutated sixpulse thyristor converter fed by a variable speed synchronous generator, including a microcomputer software solution to the problem of detecting the line voltage zerocrossings in presence of noise. Dynamics and control of electrical drives electronic resource.

Electrical drives play an important part as electromechanical energy converters in transportation, materials handling and most production processes. The developments in power electronics and lsi technology have made the microprocessor based adjustable speed ac motor drives become promising. Microcomputer a computer with a microprocessor as its cpu. Electrical drives and controls nov,dec2015, nov,dec2014,electrical drives and controls may2014,electrical drives and controls nov,dec20,electrical drives and controls may2012,electrical drives and controls nov,dec2012,electrical drives and control dec2009,electrical drives and controls ap,may2010. An electric motor together with its control equipment and energy transmitting device forms an electric drives. This book presents a unified treatment of complete electrical drive systems, including the mechanical parts, electrical machines, and power converters and controls. Whenever the term electric motor or electrical generator is used, we tend to think that the speed of rotation of these machines is totally controlled only by the applied voltage and frequency of the source current. Microprocessor based single phase speed control of. Vector control of ac drives was a technical novelty ten years ago, but today this method is largely used in frequency converters.

Introduction to electric drives module 1 modern electric drives machine design utility interface speed sensorless renewable energy machine theory nonlinear control realtime control dsp application pfc speed sensorless power electronic converters interdisciplinary several research area expanding. Control in power electronics and electrical drives 1st edition. Permanent magnet synchronous motor pmsm dynamic model. Vector control, also called fieldoriented control foc, is a variablefrequency drive vfd control method in which the stator currents of a threephase ac electric motor are identified as two orthogonal components that can be visualized with a vector. Various research areas can be subdivided from electric drives as shown in figure 3. But control of electrical drives is also necessary because all the functions accomplished by the drives are mainly transient operations i. The basic procedure of feedback and feedforward cascade control system design is presented for the. The content is concentrated around electromechanical energy conversion based on lagranges method and its clear and subsequent application to control of electric drives with induction machines. Difference between microprocessor and microcontroller. But the speed of rotation of an electrical machine can be controlled precisely also by implementing the concept of drive the main advantage of this concept is, the motion control.

Microprocessor controlled ac and dc drives ppt free download as powerpoint presentation. Unesco eolss sample chapters electrical engineering fundamentals of electrical drive controls josko deur and danijel pavkovic encyclopedia of life support systems eolss 2. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. The development of electric drives took place as the demand of control of electric motor drive system and industrial control existed. This book provides a comprehensive introduction to the fundamental concepts of electric drives and is eminently suited as a textbook for b. Today about 60 % of the electric energy produced will be converted and used by electric drives of technological machines. Control in power electronics and electrical drives contains the proceedings of the second international federation of automatic control symposium held in dusseldorf, germany, on october 35, 1977. Systems employed for motion control are called as drives. It provides links among electrical machine and control theory, practical hardware aspects, programming issues, and applicationspecific problems. May 18, 2012 introduction to electric drives module 1 modern electric drives machine design utility interface speed sensorless renewable energy machine theory nonlinear control realtime control dsp application pfc speed sensorless power electronic converters interdisciplinary several research area expanding.

New roles for permanent magnet technology abbs permanent magnet technology has found its way into marine applications and wind power generators. Microprocessorbased controller design and simulation for a permanent magnet synchronous motor drive article pdf available in ieee transactions on industrial electronics ie354. Special thanks to getachew darge and bengt simonsson for helping me out in the lab. Energy management and control of electrical drives in.

Jul 30, 2018 it can be said that the electrical drives enable us to control the motor in every aspect. Digital control of electrical drives offers insight into electric drives and their usage in motion control environment. Drives employing electric motors are called as electrical drives. Electric drives, second edition ion boldea, syed a. Therefore, with the appropriate pulse pattern on the power switches of the inverter. Electronic systems are applied in all branches of industry as well as in domestic equipment. They are an immediate solution for high power reversible drives and are becoming competitors to dc and induction motor drives. Request pdf overview of advanced control strategies for electric.

Electric drives full notes, pdf, ebooks, all units basic components of an electric drives system classroom lecture slides notes pdf model based predictive control of electric drives complete guide lecture classroom notes pdf. Alternating current ac induction and synchronous machines are frequently used in variable speed drives with applications ranging from computer peripherals, robotics, and machine tools to railway traction, ship propulsion, and rolling mills. This trainer is used by the students in the electric drives laboratory to control the speed of dc motor. A 32 bit microprocessor, tms320f2809, is utilized to implement both the. If the modelling is completely based on the physics of the particular system, it is called white box modelling. Microprocessor control of synchronous motor drives. It may employ any of the prime movers diesel engines, steam turbines and electric motors for supplying mechanical energy for motion control. The author carefully deploys physical insight, mathematical rigor, and computer simulation to clearly and effectively present electric machines and drive. Classification of electric drive with advantage and disadvantage. Household blenders that advertise many speeds frequently combine a field coil with. Principles of the simulation of digitally controlled electric drive systems. Control system design of microprocessor based variable.

Fundamentals of electrical drive controls josko deur and danijel pavkovic university of zagreb, faculty of mechanical engineering and naval architecture, i. However electric drives are commonly driven by a digital processor that fosters the. An example of an openloop control system is an electric toaster. Principles, control, modeling, and simulation takes a groundup approach that emphasizes fundamental principles. Up to 400 amps of microprocessor based control with an extremely compact footprint. Basic components of an electric drives system classroom lecture slides notes pdf. Based on the examples of drives discussed in the foregoing, general outlines may be drawn for designing the control system design of variable drives using a microprocessor. Microcontrollers for the drive train in hybrid and. Synchronous superlatives a new generation of high power fixed speed motors allows electric drives into markets once dominated by mechanical drives. What are merits and demerits of microprocessor based drive system. Designs were often lossy or they provided only crude increments in the parameters controlled. If several group of mechanisms or machines are organized on one shaft and driven or actuated by one motor, the system is called a group drive or shaft drive. Digital signal processing based speed control of induction. The symposium provided a forum for discussing the effects of converter control on the design of electrical machines.

Describe the working of ad and da converter in microprocessor based drives. Their main purpose is to generate translational or rotational forces or to change the position of mechanical components. Basic elements of electric drive,braking of induction motor, braking of synchronous motor,bridge rectifier circuit diagram with freewheeling. Scadasupervisory control and data acquisition, instrument society of. Variable speed drives employing microprocessor control of synchronous motor drives are becoming very popular in industrial applications. Introduction to control systems school of electrical. A ceiling fan motor with regulator and also with blades, a food mixer with food to be processed, a motor and. This microprocessor based system is designed with a new integrated circuit lmd 18200 which contains a fourquadrant switching circuit and onboard control logic. The fcs mpc is usually preferred in the control of electric drives due to the easy. Aug 22, 2014 einstein college of engineering electric drives is multidisciplinary field. Nasar electric drives are everywhere, and with the looming promise of electric vehicles and renewable energy, they will become more complex and the demands. Describe the working operation of microprocessor based electrical drives. Today, electric drives, power electronic systems and their controls are getting more and more complex, and their use is widely increasing in all sectors. The openloop control system utilizes an actuating device to control the process directly without using device.

Expected in the third quarter of fy2016 subject to change. An openloop control system utilizes a controller or control actuator to obtain the desired response as shown in figure 2. Mechatronic systems comprise a large variety of electrical drives. These microprocessor based, sensorless vector drives provide adjustable speed control for threephase motors. This chapter is concerned with the principle, hardware and software implementations, and some processing techniques in inverterdriven ac motor systems which are controlled by microprocessors. Visually both microprocessor and microcontroller almost look identical but they are different in many aspects. Digital signal processing based speed control of induction motor drive system international journal on advanced electrical and electronics engineering, ijaeee, issn print. Controller software includes a number of contemporary control methods, like adaptive control, model based control etc. Chapter 2 introduction to microprocessor based control. In a particular memory circuit, the addresses might start at 1oo0 and run consecutively.

Draw and explain the block diagram of microprocessor based dc drives. Microcontrollers for the drive train in hybrid and electric vehicles april 2012 4 texas instruments in order to control a threephase electric motor, timer modules must typically generate six pulsewidth modulated pwm signals. Microprocessor controlled ac and dc drives ppt computer. Abbs industrial drive, acs800 abbs acs800 industrial drive is an energy saving, compact drive which can be connected to almost any control system. Here the dc motor is controlled by the microprocessor 8085. Electric drives an integrated approach classroom notes lecture pdf. The thesis contributions include a design procedure for the proposed switcheddfm drive based on a required. Basic concepts of microprocessors differences between. Elements of controlled electrical drive figure 1 shows the structural block diagram of a controlled electrical drive. Acquisition structure acquisition of the assets and liabilities of the businesses and stock of the related companies expected schedule signing. It consists of an electric motor motors, a transfer mechanism, an electrical energy converter, and a control system. Measurement and processing of realtime data for computerassisted characteristic evaluation.