DOCSLIB.ORG

Electrical Engineering Specialization in Power Electronics And

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Electrical Engineering Specialization in Power Electronics And Syllabus M. Tech.: Electrical Engineering Specialization in Power Electronics and Electric Drives (Part Time) INSTITUTE: Institute of Technology(IOT) DEPARTMENT: Electrical COURSE: M.Tech (Part Time) (Power Electronics & Electric Drives) Program Learning Objective: PO1 To impart education and train graduate engineers in the field of power electronics & Drives to meet the emerging needs of society. PO2 To study design, analysis and control of power electronic circuits for variable frequency drives application. PO3 To understand and design power electronic and drive systems for different application. PO4 To facilitate graduates in research activities leading to innovative solutions in interfacing of power electronic controllers with renewable energy sources. PO5 To analyze and design switch mode regulators/Power Converters for various industry applications. Program Learning Outcome: PLO1 Will be able to apply the knowledge of science and mathematics in designing, analyzing and using the power converters and drives for various applications that meet specific needs. PLO2 To enable students to develop, construct, operate and test power electronic converters and machine in the laboratory. PLO3 Students will understand current and emerging issues to analyze and evaluate the merits and disadvantages of large power electronic systems. PLO4 To enable students to design, analyze, model, build and test the operation of drives in a lab environment. PLO5 Detailed understanding of the operation, function and interaction between various components and sub-systems used in power electronic converters, electric machines and adjustable-speed drives. STUDY & EVALUATION SCHEME (Effective from the session 2017-2018) M. Tech.: Electrical Engineering (Part Time) Specialization: Power Electronics & Electric Drives I Year: I Semester S. Subject Subject L T P CIE ESE Total C No. Code THEORY 1 MHU 1001P Technical Communication 2 0 0 40 60 100 2 Industrial Power 2 MEE 1004 P 4 2 0 40 60 100 5 Electronics 3 MEE1003P Electric Drives 4 2 0 40 60 100 5 PRACTICAL/TRAINING/PROJECT 4 MEE1502P Power Electronics Lab 0 0 2 80 20 100 1 TOTAL 10 4 2 200 200 400 13 M. Tech.: Electrical Engineering (Part Time) Specialization: Power Electronics & Electric Drives I Year: II Semester S. Subject Subject L T P CIE ESE Total C No. Code THEORY 1 MHU2001P Professional Ethics 2 0 0 40 60 100 2 Advanced Power 2 MEE 2004P 4 2 0 40 60 100 5 Electronics Advance Electrical Drive 3 MEE2003P 4 2 0 40 60 100 5 Systems PRACTICAL/TRAINING/PROJECT Advance Electric Drives 4 MEE 2502P 0 0 3 80 20 100 2 Lab TOTAL 10 4 3 200 200 400 14 3 STUDY & EVALUATION SCHEME (Effective from the session 2017-2018) M. Tech.: Electrical Engineering (Part Time) Specialization: Power Electronics & Electric Drives II Year: III Semester S. Subject Subject L T P CIE ESE Total C No. Code THEORY Modeling & Analysis of 1 MEE 3004P 4 2 0 40 60 100 5 Electrical Machines Control techniques in 2 MEE 3005P 4 2 0 40 60 100 5 power electronics Modeling & Simulation of 3 MEE 3006P 4 2 0 40 60 100 5 Power Electronics Systems PRACTICAL/TRAINING/PROJECT Power Electronics 3 MEE3501P 0 0 2 80 20 100 1 Simulation Lab TOTAL 12 6 2 200 200 400 16 STUDY & EVALUATION SCHEME (Effective from the session 2017-2018) M. Tech.: Electrical Engineering (Part Time) Specialization: Power Electronics & Electric Drives II Year: IV Semester S. Subject Code Subject L T P CIE ESE Total C No. THEORY 1 ---- Elective-I 4 2 0 40 60 100 5 2 --- Elective-II 4 2 0 40 60 100 5 PRACTICAL/TRAINING/PROJECT 3 MEE4501P Seminar/Minor Project - - 4 100 - 100 4 TOTAL 8 4 4 180 120 300 14 M. Tech.: Electrical Engineering (Part Time) Specialization: Power Electronics & Electric Drives III Year: V Semester Subject S. No. Subject L T P CIE ESE Total C Code THEORY 1 ---- Elective-III 4 2 0 40 60 100 5 PRACTICAL/TRAINING/PROJECT 2 MEE5501P Dissertation-I - - 6 100 - 100 6 TOTAL 4 2 6 140 60 200 11 STUDY & EVALUATION SCHEME (Effective from the session 2017-2018) M. Tech.: Electrical Engineering (Part Time) Specialization: Power Electronics & Electric Drives III Year: VI Semester S. Subject Subject L T P CIE ESE Total C No. Code PRACTICAL/TRAINING/PROJECT 1 MEE 6501P Comprehensive Viva 0 0 0 100 - 100 2 2 MEE 6502P Dissertation-II - - 18 80 20 100 18 TOTAL 0 0 18 180 20 200 20 GRAND TOTAL 44 20 36 1020 780 1800 88 STUDY & EVALUATION SCHEME (Effective from the session 2017-2018) M. Tech.: Electrical Engineering (Part Time) Specialization: Power Electronics & Electric Drives List of Electives S. No. Subject Code Subject Elective-I (Semester-IV) 1 MEE 4104P Microprocessor Controlled Electric Drives 2 MEE 4105P HVDC 3 MMA 4101P Optimization Techniques 4 MEE 4103P Active Power Conditioners Elective-II (Semester-IV) 1 MEE 4201P Switched Mode Power Converters 2 MEE 4205P Special Machine 3 MEE 4203P Neural Network & Fuzzy Control 4 MEE 4206P Digital Controllers Architecture and Interfacing Elective-III (Semester-V) 1 MEE 5101P Power Quality 2 MEE 5102P Power Electronics Applications in Renewable Energy Systems 3 MEE 5108P Digital Signal Processing and its Applications 4 MEE 5105P Electric Traction System Syllabus M. Tech.: Electrical Engineering (Part Time) Specialization in Power Electronics and Electric Drives M. Tech.: Electrical Engineering (Part Time) Specialization: Power Electronics and Electric Drives I Year, I Semester TECHNICAL COMMUNICATION MHU-1001P L T P C 2 0 0 2 Course Learning Objective: 1. To make them professionally skilled and employable in the present corporate set up 2. To improve their language skills (listening, speaking, reading and writing) in English UNIT-I (10Hours) COMMUNICATION AND PRESENTATION STRATEGY : Communication: Process, Types, How to make it effective, Barriers to Communication (interpersonal, intrapersonal, extra personal, cross-cultural), Body Language;Presentation Strategy: Steps (planning, organization, preparation, and presentation), Types, Motives (general and specific), Manner (Do’s and Don’ts), Methods (lecture, advertisement, paper presentation, PPT presentations), and Art (how to make effective presentation) UNIT-II (12Hours) TECHNICAL WRITING: CV and Business letters: CV drafting, Editing, Job application letter, Claim letter, Quotation letter, Sales letter, Notice, Memo, Agenda and Minutes of Meeting;Proposal: Motives, Types (solicited and unsolicited), Steps involved in Proposal Writing;Report: Types, Method of Writing, Various Components; Technical Paper: Abstract, Various Sections (literature review, methodology, analysis, interpretation, findings and recommendation), Steps involved in Technical Paper Writing, Bibliography;Project and Dissertation:Motive, Components, Steps involved in Planning and Drafting UNIT-III (6Hours) TEXT BASED READING AND CRITICAL APPRECIATION: 1. The Scientist by R.P.Singh 2. The Financial Expert by R. K. Narayana Text Books T1 : Singh,R.P. “The Flea Market and Other Plays”, Authors Press T2 :Narayana, R. K. “The Financial Expert” T3: Rizvi, M.A. “Effective Technical Communication”, Tata McGraw Hill T4:Raman, M. and Sharma, S. “Technical Communication: Principles and Practice” Oxford University Press. Course Learning outcome: 1. Students will be aware of various aspects of communication and its importance. 2. They will be proficient in communication. 3. They will be well versed in drafting and editing résumé, report, proposal, and research papers. INDUSTRIAL POWER ELECTRONICS MEE1004P L T P C 4 2 0 5 Course Learning Objectives: 1. To illustrate the fundamentals of power electronics devices & switching characteristics of different power devices. 2. To apply critical thinking in solving industrial electronic problems. 3. To demonstrate the importance of AC voltage controllers and cyclo- converters for various industrial applications. 4. To analyze and design switch mode power electronic converters for various applications including microprocessor power supplies, renewable energy systems, and motor drives. UNIT-I (09 Hours) POWER SEMICONDUCTOR DEVICES: Power semiconductor devices, their symbols and static characteristics, specifications of switches, types of power electronic circuits Operation, steady state & switch characteristics & switching limits of Power Transistor Operation and steady state characteristics of Power MOSFET and IGBT THYRISTOR: Operation V- I characteristics, two transistor model, methods of turn-on Operation of GTO. UNIT-II (10 Hours) POWER SEMICONDUCTOR DEVICES (CONTD): Protection of devices, Series and parallel operation of thyristors, Commutation techniques of thyristor. DC-DC CONVERTERS: Principles of step-down chopper, step down chopper with R-L load, Principle of step-up chopper, and operation with RL load, classification and application of choppers. UNIT-III (10 Hours) PHASE CONTROLLED CONVERTERS: Single phase half wave controlled rectifier with resistive and inductive loads, effect of freewheeling diode. Single phase fully controlled and half controlled bridge converters. Performance Parameters, Three phase half wave converters, Three phase fully controlled and half controlled bridge converters, Effect of source impedance, Single phase and three phase dual converters. UNIT-IV (10 Hours) AC VOLTAGE CONTROLLERS: Principle of On-Off and phase controls Single phase ac voltage controller with resistive and inductive loads. Three phase ac voltage controllers (various configurations and comparison only) Single phase transformer taps changer. Basic principle of operation of Cyclo Converters, single phase to single phase, three phase to single phase and three phase to three phase
Load more

Recommended publications
  • Evaluation of Direct Torque Control with a Constant-Frequency Torque Regulator Under Various Discrete Interleaving Carriers
    electronics Article Evaluation of Direct Torque Control with a Constant-Frequency Torque Regulator under Various Discrete Interleaving Carriers Ibrahim Mohd Alsofyani and Kyo-Beum Lee * Department of Electrical and Computer Engineering, Ajou University, 206, World cup-ro, Yeongtong-gu Suwon 16499, Korea * Correspondence: [email protected]; Tel.: +82-31-219-2376 Received: 25 June 2019; Accepted: 20 July 2019; Published: 23 July 2019 Abstract: Constant-frequency torque regulator–based direct torque control (CFTR-DTC) provides an attractive and powerful control strategy for induction and permanent-magnet motors. However, this scheme has two major issues: A sector-flux droop at low speed and poor torque dynamic performance. To improve the performance of this control method, interleaving triangular carriers are used to replace the single carrier in the CFTR controller to increase the duty voltage cycles and reduce the flux droop. However, this method causes an increase in the motor torque ripple. Hence, in this work, different discrete steps when generating the interleaving carriers in CFTR-DTC of an induction machine are compared. The comparison involves the investigation of the torque dynamic performance and torque and stator flux ripples. The effectiveness of the proposed CFTR-DTC with various discrete interleaving-carriers is validated through simulation and experimental results. Keywords: constant-frequency torque regulator; direct torque control; flux regulation; induction motor; interleaving carriers; low-speed operation 1. Introduction There are two well-established control strategies for high-performance motor drives: Field orientation control (FOC) and direct torque control (DTC) [1–3]. The FOC method has received wide acceptance in industry [4]. Nevertheless, it is complex because of the requirement for two proportional-integral (PI) regulators, space-vector modulation (SVM), and frame transformation, which also needs the installation of a high-resolution speed encoder.
    [Show full text]
  • Direct Torque Control of Induction Motors
    DIRECT TORQUE CONTROL FOR INDUCTION MOTOR DRIVES MAIN FEATURES OF DTC · Decoupled control of torque and flux · Absence of mechanical transducers · Current regulator, PWM pulse generation, PI control of flux and torque and co-ordinate transformation are not required · Very simple control scheme and low computational time · Reduced parameter sensitivity BLOCK DIAGRAM OF DTC SCHEME + _ s* s j s + Djs _ Voltage Vector s * T + j s DT Selection _ T S S S s Stator a b c Torque j s s E Flux vs 2 Estimator Estimator 3 s is 2 i b i a 3 Induction Motor In principle the DTC method selects one of the six nonzero and two zero voltage vectors of the inverter on the basis of the instantaneous errors in torque and stator flux magnitude. MAIN TOPICS Þ Space vector representation Þ Fundamental concept of DTC Þ Rotor flux reference Þ Voltage vector selection criteria Þ Amplitude of flux and torque hysteresis band Þ Direct self control (DSC) Þ SVM applied to DTC Þ Flux estimation at low speed Þ Sensitivity to parameter variations and current sensor offsets Þ Conclusions INVERTER OUTPUT VOLTAGE VECTORS I Sw1 Sw3 Sw5 E a b c Sw2 Sw4 Sw6 Voltage-source inverter (VSI) For each possible switching configuration, the output voltages can be represented in terms of space vectors, according to the following equation æ 2p 4p ö s 2 j j v = ç v + v e 3 + v e 3 ÷ s ç a b c ÷ 3 è ø where va, vb and vc are phase voltages.
    [Show full text]
  • Improved Direct Torque Control of Doubly Fed Induction Motor Using Space Vector Modulation
    Received: December 22, 2020. Revised: February 26, 2021. 177 Improved Direct Torque Control of Doubly Fed Induction Motor Using Space Vector Modulation Mohammed El Mahfoud1* Badre Bossoufi1 Najib El Ouanjli2 Mahfoud Said2 Mohammed Taoussi2 1Laboratory of engineering Modeling and Systems Analysis, SMBA University Fez, Morocco 2Technologies and Industrial Services Laboratory, SMBA University Fez, Morocco * Corresponding author’s Email: [email protected] Abstract: This research paper deals with the improved direct torque control (DTC) of a doubly fed induction machine (DFIM) operating in motor mode. The conventional DTC is a powerful tool to ensure robustness and good torque dynamics. However, the variable switching frequency as well as the presence of torque and flux ripples due to the use of hysteresis controllers are the major drawbacks of this strategy. For this purpose, the control by space vector Modulation (SVM) is developed to improve DTC performance, by replacing hysterisis controllers by PI controllers to reduce electromagnetic flux ripple and torque ripple in order to minimize mechanical vibration and acoustic noise while maintaining the benefits of DTC control. The proposed control algorithm is simulated and tested in MATLAB/Simulink. A comparative analysis between this technique and conventional DTC is carried out, highlighting the efficiency of the proposed improvement approach. The performance indexes and comparative results show the effectiveness of the proposed control in reducing torque ripple and stator and rotor flux ripple by up to 43%, 42% and 31%, respectively, resulting in Total Harmonic Distortion (THD%) 61% lower, in addition the switching frequency is controlled, and the Rejection Time is improved by more than 76%.
    [Show full text]
  • Direct Torque Control of Induction Motor Using Fuzzy Logic Controller
    International Refereed Journal of Engineering and Science (IRJES) ISSN (Online) 2319-183X, (Print) 2319-1821 Volume 3, Issue 2 (January 2014), PP.56-61 Direct Torque Control of Induction Motor Using Fuzzy Logic Controller 1 2 C.Vignesh, S.Shantha Sheela, 3 4 E.Chidam Meenakchi Devi, R.Balachandar 1,2,3,4 M.E Power Electronics and Drives, Sri Subramanya college of Engineering and Technology,India Abstract:- In this paper, Direct Torque Control (DTC) approaches of induction motor (IM) drives has been proposed and it is extensively implemented in industrial variable speed applications. This paper presents a unique direct torque control (DTC) approach for induction motor (IM) drives fed by using a fuzzy logic controller. The intention is to develop a low-ripple high-performance induction motor (IM) drive. The presented scheme is founded on the emulation of the operation of the conservative six switch three-phase inverter. It routines the dc current to re-construct the stator currents desired to estimate the motor flux and the electromagnetic torque. This methodology has been adopted in the design of the vector selection table of the suggested DTC approach through fuzzy logic controller. The modelling and simulation results of direct torque control of induction motor have been confirmed by means of the software package MATLAB/Simulink. Keywords:- Direct Torque Control, Fuzzy Logic Controller, Induction Motor, Direct Torque Control Fed Induction Motor. I. INTRODUCTION For high power industrial applications it is desirable to use AC motor drive instead of DC drive. But due to inherent torque coupling present in AC motor, the dynamic response becomes sluggish.
    [Show full text]
  • Abstract Controlling Ac Motor Using Arduino
    ABSTRACT CONTROLLING AC MOTOR USING ARDUINO MICROCONTROLLER Nithesh Reddy Nannuri, M.S. Department of Electrical Engineering Northern Illinois University, 2014 Donald S Zinger, Director Space vector modulation (SVM) is a technique used for generating alternating current waveforms to control pulse width modulation signals (PWM). It provides better results of PWM signals compared to other techniques. CORDIC algorithm calculates hyperbolic and trigonometric functions of sine, cosine, magnitude and phase using bit shift, addition and multiplication operations. This thesis implements SVM with Arduino microcontroller using CORDIC algorithm. This algorithm is used to calculate the PWM timing signals which are used to control the motor. Comparison of the time taken to calculate sinusoidal signal using Arduino and CORDIC algorithm was also done. NORTHERN ILLINOIS UNIVERSITY DEKALB, ILLINOIS DECEMBER 2014 CONTROLLING AC MOTOR USING ARDUINO MICROCONTROLLER BY NITHESH REDDY NANNURI ©2014 Nithesh Reddy Nannuri A THESIS SUBMITTED TO THE GRADUATE SCHOOL IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE MASTER OF SCIENCE DEPARTMENT OF ELECTRICAL ENGINEERING Thesis Director: Dr. Donald S Zinger ACKNOWLEDGEMENTS I would like to express my sincere gratitude to Dr. Donald S. Zinger for his continuous support and guidance in this thesis work as well as throughout my graduate study. I would like to thank Dr. Martin Kocanda and Dr. Peng-Yung Woo for serving as members of my thesis committee. I would like to thank my family for their unconditional love, continuous support, enduring patience and inspiring words. Finally, I would like to thank my friends and everyone who has directly or indirectly helped me for their cooperation in completing the thesis.
    [Show full text]
  • Comparative Study of Field Oriented Control and Direct Torque Control of Induction Motor
    ISSN: 2455-2631 © July 2018 IJSDR | Volume 3, Issue 7 COMPARATIVE STUDY OF FIELD ORIENTED CONTROL AND DIRECT TORQUE CONTROL OF INDUCTION MOTOR 1Milan Singh Tekam2 Dr. A. K. Sharma 1,2Department of electrical engineering, Jabalpur engineering college Abstract: Now-a-days induction motor is the main work-horse of the industries. So controlling of performance of induction motor is most precisely required in many high performance applications. Scalar control method gives good steady state response but poor dynamic response. While vector control method gives good steady state as well as dynamic response. But it is complicated in structure so to overcome this difficulty, direct torque control introduced. This paper discusses the comparative study of field oriented control (FOC) and direct torque control (DTC) methods of induction motor according to their working principle, structure complexity, performance, merits and demerits. Keywords: Vector Control, Induction Motor, Direct Torque Control, Field Oriented Control, Decoupling, Separately Excited Dc Motor. I. INTRODUCTION In 1891 at the Frankfurt exhibition, Nikola Tesla first presented a polyphase induction motor. Since then great improvements have been made in the design and performance of the induction motors and numerous types of polyphase and single-phase induction motors have been developed. Due to its simple, rugged and inexpensive construction and excellent operating characteristics induction motor has become very popular in industrial applications. As a rough estimate nearly 90 percent of the world’s AC motors are polyphase induction motors. AC induction motor is the most common motor used in industries and mains powered home appliances. It is biggest industrial load, so widely used.
    [Show full text]
  • DTC a Motor Control Technique for All Seasons DTC a Motor Control Technique for All Seasons
    White Paper DTC A motor control technique for all seasons DTC A motor control technique for all seasons Variable-speed drives (VSDs) have enabled unprecedented motor torque by using armature current. Over time, performance in electric motors and delivered dramatic AC drive designs have evolved offering improved dynamic energy savings by matching motor speed and torque to performance. (One recent, noteworthy discussion of various actual requirements of the driven load. Most VSDs in available AC drive control methods appears in Ref. 1.) the market rely on a modulator stage that conditions voltage and frequency inputs to the motor, but causes inherent Most high-performance VSDs in 1980s relied on pulse-width time delay in processing control signals. In contrast, modulation (PWM). However, one consequence of using the premium VSDs from ABB employ direct torque control a modulator stage is the delay and a need to filter (DTC) — an innovative technology originated by ABB — the measured currents when executing motor control greatly increasing motor torque response. In addition, commands — hence slowing down motor torque response. DTC provides further benefits and has grown into a larger technology brand which includes drive hardware, control In contrast, ABB took a different approach to high- software, and numerous system-level features. performance AC motor control. AC drives from ABB intended for demanding applications use an innovative technology called direct torque control (DTC). The method Electric motors are often at the spearhead of modern directly controls motor torque instead of trying to control production systems, whether in metal processing lines, the currents analogously to DC drives.
    [Show full text]
  • Performance Improvement for PMSM Driven by DTC Based on Discrete Duty Ratio Determination Method
    applied sciences Article Performance Improvement for PMSM Driven by DTC Based on Discrete Duty Ratio Determination Method Dazhi Wang 1, Tianqing Yuan 1,* , Xingyu Wang 1, Xinghua Wang 2, Sihan Wang 1 and Yongliang Ni 3 1 School of Information Science and Engineering, Northeastern University, Shenyang 110819, China 2 Physical Education Department, School of Humanities and Law, Northeastern University, Shenyang 110819, China 3 China North Vehicle Research Institute, Beijing 100072, China * Correspondence: [email protected] Received: 27 May 2019; Accepted: 17 July 2019; Published: 22 July 2019 Abstract: In order to improve the performance of the servo control system, which is composed ofthe permanent magnet synchronous motor (PMSM) driven by novel direct torque control based on the fixed sector division criterion (FS-DTC) utilizing the composite active vectors, a discrete duty ratio determination method (FS-DDTC) is proposed in this paper. The determination of the accurate duty ratio is the key to obtain the desired error compensational results for PMSM, which is related to the performance of the servo system directly. As the applied master vector and slave vector during each control period are the adjacent vectors, therefore, the direction of the synthetic vector is between the directions of the two applied active vectors. Additionally, the analytical relationship between the sector angle of the synthetic vector and the error rate, which can realize the determination of the discrete duty ratio value without complicated calculations is deduced first. Furthermore, the duty ratio values of the two applied active vectors in FS-DTC are obtained through the selections of the duty ratio scale in the novel discrete duty ratio determination method directly, which can simplify the calculation process of the accurate duty ratio values effectively.
    [Show full text]
  • Rita MBAYED Contribution to the Control of the Hybrid Excitation
    Année 2012 UNIVERSITE DE CERGY PONTOISE THESE Présentée pour obtenir le grade de DOCTEUR DE L’UNIVERSITE DE CERGY PONTOISE Ecole doctorale: Sciences et Ingénierie Spécialité: Génie Electrique Soutenance publique prévue le 12 Décembre 2012 Par Rita MBAYED Contribution to the Control of the Hybrid Excitation Synchronous Machine for Embedded Applications JURY Rapporteurs : Prof. Gérard CHAMPENOIS Université de Poitiers Prof. Eric SEMAIL Ecole Nationale d'Arts et Métiers ParisTech Examinateurs : Prof. Francis LABRIQUE Université Catholique de Louvain Prof. Mohamed GABSI Ecole Normale Supérieure Cachan Dr. Vincent LANFRANCHI Université de Technologie de Compiègne Directeur de thèse : Prof. Eric MONMASSON Université de Cergy Pontoise Co-directeurs : Prof. GeorgesSALLOUM Université Libanaise Dr. Lionel VIDO Université de Cergy Pontoise Laboratoire SATIE - UCP/UMR 8029, 1 rue d’Eragny, 95031 Neuville sur Oise France The secret is comprised in three words: Work, finish, publish. Michael Faraday Ere many generations pass, our machinery will be driven by a power obtainable at any point of the universe. This idea is not novel. Men have been led to it long ago by instinct or reason; it has been expressed in many ways, and in many places, in the history of old and new. We find it in the delightful myth of Antheus, who derives power from the earth; we find it among the subtle speculations of one of your splendid mathematicians and in many hints and statements of thinkers of the present time. Throughout space there is energy. Is this energy static or kinetic? If static our hopes are in vain; if kinetic - and this we know it is, for certain - then it is a mere question of time when men will succeed in attaching their machinery to the very wheelwork of nature.
    [Show full text]
  • Brushless DC Electric Motor
    Please read: A personal appeal from Wikipedia author Dr. Sengai Podhuvan We now accept ₹ (INR) Brushless DC electric motor From Wikipedia, the free encyclopedia Jump to: navigation, search A microprocessor-controlled BLDC motor powering a micro remote-controlled airplane. This external rotor motor weighs 5 grams, consumes approximately 11 watts (15 millihorsepower) and produces thrust of more than twice the weight of the plane. Contents [hide] 1 Brushless versus Brushed motor 2 Controller implementations 3 Variations in construction 4 AC and DC power supplies 5 KM rating 6 Kv rating 7 Applications o 7.1 Transport o 7.2 Heating and ventilation o 7.3 Industrial Engineering . 7.3.1 Motion Control Systems . 7.3.2 Positioning and Actuation Systems o 7.4 Stepper motor o 7.5 Model engineering 8 See also 9 References 10 External links Brushless DC motors (BLDC motors, BL motors) also known as electronically commutated motors (ECMs, EC motors) are electric motors powered by direct-current (DC) electricity and having electronic commutation systems, rather than mechanical commutators and brushes. The current-to-torque and frequency-to-speed relationships of BLDC motors are linear. BLDC motors may be described as stepper motors, with fixed permanent magnets and possibly more poles on the rotor than the stator, or reluctance motors. The latter may be without permanent magnets, just poles that are induced on the rotor then pulled into alignment by timed stator windings. However, the term stepper motor tends to be used for motors that are designed specifically to be operated in a mode where they are frequently stopped with the rotor in a defined angular position; this page describes more general BLDC motor principles, though there is overlap.
    [Show full text]
  • Compare the Direct Torque Control of Permanent Magnet Synchronous
    ISSN (Print) : 2320 – 3765 ISSN (Online): 2278 – 8875 International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering (An ISO 3297: 2007 Certified Organization) Vol. 5, Issue 1, January 2016 Compare the Direct Torque Control of Permanent Magnet Synchronous Motor with Asynchronous Motor by Increasing Levels of Inverter Mohammad Ali Motamedi1, Shervin Samimian Tehrani2, Peyman Salmanpour Bandaghiri3, Heidar Shekarrizian4 Khuzestan Regional Electricity Company, Ahvaz, Iran1,3 M. Sc Student, Dept. of Electrical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Iran2 M. Sc Student, Dept. of Electrical Engineering, Halmstad University, Halmstad, Sweden4 ABSTRACT: Industrial automation have been developed mostly the around of motion control systems in which the controlled electric motor have vital role as heart of system. So, motor control systems with a very good performance to a large extent result in optimum performance of the automation of production that this work is associated with increased production and quality of products. In fact, the performance of modern automation systems, which in terms of speed, accuracy, flexibility and performance are defined, mainly related to control strategies. Recent developments in the power electronics industry has led to a significant increase of power that can exchanged by semiconductor equipment. Despite this, most voltage supported by this equipment is a major obstacle in the applications of medium & high Voltage. Multilevel converters have been introduced for such applications. These inverters have less harmonic distortion compared with standard two-level inverters when they are working a switching frequency. Permanent magnet synchronous motors (PMSM) newly developed with high energy permanent magnet materials if properly controlled can provide fast dynamic and performance with high efficiency and compatibility are very good in various applications.
    [Show full text]
  • A Comparitve Study Between Vector Control and Direct Torque Control of Induction Motor Using Matlab Simulink
    A COMPARITVE STUDY BETWEEN VECTOR CONTROL AND DIRECT TORQUE CONTROL OF INDUCTION MOTOR USING MATLAB SIMULINK Submitted by Fathalla Eldali Department of Electrical and Computer Engineering For the Degree of Master of Science Colorado State University Fall 2012 1 WHEN HAVE I BEEN INTERESTED IN MOTOR DRIVE AND MATLAB? BSC Senior Design LIM + PLC MATLAB/Simulink as A Modeling TOOL 2 THESIS OUTLINES Introduction Induction Motor Principles Induction Motor Modeling Electric Motor Drives Vector Control of Induction Motor Direct Torque Control Theoretical Comparison Vector Control and Direct Torque Control Simulation Results Simulation Results in the normal operation case The effect of Voltage sags and short interruption on driven induction motors The characteristics of the voltage sag and short interruption 3 Conclusion & Future Work INTRODUCTION Motors are needed Un driven Motors and power consumption Power Electronics, DSP revolution help Rectifiers Inverters Sensors Control Systems Theories 4 OLD STUDIES & MOTIVATION Many studies have been done about FOC & DTC individually Few studies were published as a comparison studies as [17-19] Voltage Sag & Short Interruption faults were not considered in the comparison 5 INDUCTION MOTOR PRINCIPLES Nikola Tesla first AC motors 1888 AC motors -Induction Motors -Permanent Magnet Motors Why are Induction Motors are mostly used ? Supplied through stator only Easy to manufacture and maintain Cheap 6 INDUCTION MOTOR CONSTRUCTION Stator : laminated sheet steel (eddy current loses reduction) attached to an iron frame stator consists of mechanical slots insulated copper conductors are buried inside the slots and then Y or Delta connected to the source. 7 Two Types of Rotor A-wound rotor: -Three electrical phases just as the stator does and they (coils) are connected wye or delta.
    [Show full text]