Principle Of Step-up Chopper
|
|
- Roland McCormick
- 5 years ago
- Views:
Transcription
1 Principle Of Step-up Chopper L + D + V Chopper C L O A D V O 1
2 Step-up chopper is used to obtain a load voltage higher than the input voltage V. The values of L and C are chosen depending upon the requirement of output voltage and current. When the chopper is, the inductor L is connected across the supply. The inductor current rises and the inductor stores energy during the time of the chopper, t. 2
3 When the chopper is off, the inductor current is forced to flow through the diode D and load for a period, t OFF. The current tends to decrease resulting in reversing the polarity of induced EMF in L. Therefore voltage across load is given by d V V L i. e., V V O O dt 3
4 A large capacitor C connected across the load, will provide a continuous output voltage. Diode D prevents any current flow from capacitor to the source. Step up choppers are used for regenerative braking of dc motors. 4
5 Expression For Output Voltage Assume the average inductor current to be during and OFF time of Chopper. When Chopper is Voltage across inductor L V Therefore energy stored in inductor Where = V.. t t period of chopper. 5
6 When Chopper is OFF (energy is supplied by inductor to load) Voltage across Energy supplied by inductor where t OFF L V V O L V V t OFF period of Chopper. Neglecting losses, energy stored in inductor L = energy supplied by inductor L O OFF 6
7 Vt V V t V O Where O OFF V t OFF VO V T t t t OFF T T = Chopping period or period of switching. 7
8 T t t V O OFF 1 V t 1 T 1 VO V 1 d t Where d duty cyle T 8
9 For variation of duty cycle ' d ' in the range of 0 d 1 the output voltage will vary in the range V V O V O 9
10 Performance Parameters The thyristor requires a certain minimum time to turn and turn OFF. Duty cycle d can be varied only between a min. & max. value, limiting the min. and max. value of the output voltage. Ripple in the load current depends inversely on the chopping frequency, f. To reduce the load ripple current, frequency should be as high as possible. 10
11 Problem A Chopper circuit is operating on TRC at a frequency of 2 khz on a 460 V supply. f the load voltage is 350 volts, calculate the conduction period of the thyristor in each cycle. 11
12 V 460 V, V = 350 V, f = 2 khz dc Chopping period Output voltage T T V dc 1 f t T 3 V 0.5 msec 12
13 Conduction period of thyristor t T V V dc t t msec 13
14 Problem nput to the step up chopper is 200 V. The output required is 600 V. f the conducting time of thyristor is 200 sec. Compute Chopping frequency, f the pulse width is halved for constant frequency of operation, find the new output voltage. 14
15 V 200 V, t 200 s, V 600V dc Solving for V V dc T t T T T T T 300s 15
16 Chopping frequency f f 1 T Pulse width is halved 3.33KHz t s 16
17 Frequency is constant f 3.33KHz 1 T 300s f T Output voltage = V T t Volts
18 Problem A dc chopper has a resistive load of 20 and input voltage V S = 220V. When chopper is, its voltage drop is 1.5 volts and chopping frequency is 10 khz. f the duty cycle is 80%, determine the average output voltage and the chopper on time. 18
19 V 220 V, R 20, f 10 khz d V S ch t 0.80 T = Voltage drop across chopper = 1.5 volts Average output voltage t V V V T V dc S ch dc Volts 19
20 Chopper time, Chopping period, 1 T f 1 T Chopper time, t t t dt t dt secs 100 μsecs μsecs 20
21 Problem n a dc chopper, the average load current is 30 Amps, chopping frequency is 250 Hz, supply voltage is 110 volts. Calculate the and OFF periods of the chopper if the load resistance is 2 ohms. 21
22 30 Amps, f 250 Hz, V 110 V, R 2 dc 3 Chopping period, T msecs 1 1 f 250 Vdc dc & Vdc dv R dv dc R dcr 30 2 d V
23 Chopper period, t Chopper OFF period, OFF OFF OFF dt t T t t t msecs msec 23
24 A dc chopper in figure has a resistive load of R = 10 and input voltage of V = 200 V. When chopper is, its voltage drop is 2 V and the chopping frequency is 1 khz. f the duty cycle is 60%, determine Average output voltage RMS value of output voltage Effective input resistance of chopper Chopper efficiency. 24
25 Chopper i 0 + V R v 0 V 200 V, R 10, Chopper voltage drop V 2V d 0.60, f 1 khz. ch 25
26 Average output voltage V d V V dc ch V dc Volts RMS value of output voltage O V d V V ch V O Volts 26
27 Effective input resistance of chopper is R R Output power is i dc i V S dc Vdc Amps R 10 V V S V dc 0 0 V V 2 dt 2 dt 1 v0 1 ch PO dt dt T R T R 27
28 P P nput power, P O O i P O 1 T 1 T d V dt dt V R 10 O ch Vi dt V V 2 V R ch watts dt 28
29 P P O O Chopper efficiency, P dv V R O P i 100 V 10 ch 2376 watts %
30 Problem A chopper is supplying an inductive load with a free-wheeling diode. The load inductance is 5 H and resistance is 10.. The input voltage to the chopper is 200 volts and the chopper is operating at a frequency of 1000 Hz. f the /OFF time ratio is 2:3. Calculate Maximum and minimum values of load current in one cycle of chopper operation. Average load current 30
31 L 5 H, R 10, f 1000 Hz, V 200 V, t : t 2 : 3 Chopping period, T t t t msecs f 1000 OFF t OFF OFF 31
32 T t t 5 T t 3 OFF 2 T t t OFF 3 OFF t OFF 3 T 5 OFF T msec 5 32
33 Duty cycle, t T t t max OFF msec 3 3 t d T 110 Maximum value of load current is given by drt L V 1 e E RT R R L 1 e 33
34 Since there is no voltage source in the load circuit, E = 0 max V R 1 e 1 e drt L RT L e 1 e max
35 max 2 10 max Minimum value of load current with E = 0 is given by min 1 e 20 1 e A V R e e drt L RT L
36 min max e e 1 Average load current dc dc 2 min A A 2 36
37 Problem A chopper feeding on RL load is shown in figure, with V = 200 V, R = 5, L = 5 mh, = 1 khz, d = 0.5 and E = 0 V. Calculate Maximum and minimum values of load current. Average value of load current. RMS load current. Effective input resistance as seen by source. RMS chopper current. f 37
38 V = 200 V, R = 5, L = 5 mh, f = 1kHz, d = 0.5, E = 0 Chopping period is T f secs Chopper i 0 + R FWD L v 0 E 38
39 max max max 1 Maximum value of load current is given by A 1 drt L RT L V e E R R e e e e e
40 Minimum value of load current is given by min drt L V e 1 E RT R R L e e 1 min min 1 e e A e
41 Average value of load current is 1 2 dc 2 for linear variation of currents dc 20 A 2 RMS load current is given by max min min min max min ORMS 3 41
42 O RMS A O RMS 3 RMS chopper current is given by ch d A O RMS
43 Effective input resistance is S R = Average source current i S S S dc A Therefore effective input resistance is R i V d V S 43
Lesson 1 of Chapter Three Single Phase Half and Fully Controlled Rectifier
Lesson of Chapter hree Single Phase Half and Fully Controlled Rectifier. Single phase fully controlled half wave rectifier. Resistive load Fig. :Single phase fully controlled half wave rectifier supplying
More information( ) ON s inductance of 10 mh. The motor draws an average current of 20A at a constant back emf of 80 V, under steady state.
1991 1.12 The operating state that distinguishes a silicon controlled rectifier (SCR) from a diode is (a) forward conduction state (b) forward blocking state (c) reverse conduction state (d) reverse blocking
More informationUNIVERSITY QUESTIONS. Unit-1 Introduction to Power Electronics
UNIVERSITY QUESTIONS Unit-1 Introduction to Power Electronics 1. Give the symbol and characteristic features of the following devices. (i) SCR (ii) GTO (iii) TRIAC (iv) IGBT (v) SIT (June 2012) 2. What
More informationControl of DC Motors by Choppers. Dr. D G Padhan PSD 1
Control of DC Motors by Choppers Dr. D G Padhan PSD 1 DC Chopper a static power electronic device that converts fixed dc input voltage to a variable dc output voltage considered as dc equivalent of an
More informationPower Electronics (BEG335EC )
1 Power Electronics (BEG335EC ) 2 PURWANCHAL UNIVERSITY V SEMESTER FINAL EXAMINATION - 2003 The figures in margin indicate full marks. Attempt any FIVE questions. Q. [1] [a] A single phase full converter
More informationINSTITUTE OF AERONAUTICAL ENGINEERING (Autonomous) Dundigal, Hyderabad
I INSTITUTE OF AERONAUTICAL ENGINEERING (Autonomous) Dundigal, Hyderabad-000 DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING TUTORIAL QUESTION BANK Course Name : POWER ELECTRONICS Course Code : AEE0
More information(a) average output voltage (b) average output current (c) average and rms values of SCR current and (d) input power factor. [16]
Code No: 07A50204 R07 Set No. 2 1. A single phase fully controlled bridge converter is operated from 230 v, 50 Hz source. The load consists of 10Ω and a large inductance so as to reach the load current
More information11. Define the term pinch off voltage of MOSFET. (May/June 2012)
Subject Code : EE6503 Branch : EEE Subject Name : Power Electronics Year/Sem. : III /V Unit - I PART-A 1. State the advantages of IGBT over MOSFET. (Nov/Dec 2008) 2. What is the function of snubber circuit?
More informationThe typical ratio of latching current to holding current in a 20 A thyristor is (A) 5.0 (B) 2.0 (C) 1.0 (D) 0.5
CHAPTER 9 POWER ELECTRONICS YEAR 0 ONE MARK MCQ 9. MCQ 9. A half-controlled single-phase bridge rectifier is supplying an R-L load. It is operated at a firing angle α and the load current is continuous.
More informationEE POWER ELECTRONICS
EE6503 - POWER ELECTRONICS UNIT III - DC TO DC CONVERTER PART A 1.What is meant by time ratio or PWM control (duty cycle) of a DC chopper? (M/J16) The ratio of a period to the total time period is known
More informationBEST BMET CBET STUDY GUIDE MODULE ONE
BEST BMET CBET STUDY GUIDE MODULE ONE 1 OCTOBER, 2008 1. The phase relation for pure capacitance is a. current leads voltage by 90 degrees b. current leads voltage by 180 degrees c. current lags voltage
More informationModule 3. DC to DC Converters. Version 2 EE IIT, Kharagpur 1
Module 3 DC to DC Converters Version 2 EE IIT, Kharagpur 1 Lesson 2 Commutation of Thyristor-Based Circuits Part-II Version 2 EE IIT, Kharagpur 2 This lesson provides the reader the following: (i) (ii)
More informationPower Electronics (Sample Questions) Module-1
Module-1 Short Questions (Previous Years BPUT Questions 1 to 18) 1. What are the conditions for a thyristor to conduct? di 2. What is the common method used for protection? dt 3. What is the importance
More informationPower Supplies. Linear Regulated Supplies Switched Regulated Supplies Batteries
Power Supplies Linear Regulated Supplies Switched Regulated Supplies Batteries Im Alternating Current The Power -Im π/2 π 2π π t Im Idc Direct Current Supply π/2 π 2 π πt -Im ٢ http://bkaragoz.kau.edu.sa
More informationSIMULATIONS WITH THE BOOST TOPOLOGY EE562: POWER ELECTRONICS I COLORADO STATE UNIVERSITY. Modified February 2006
SIMULATIONS WITH THE BOOST TOPOLOGY EE562: POWER ELECTRONICS I COLORADO STATE UNIVERSITY Modified February 26 Page 1 of 24 PURPOSE: The purpose of this lab is to simulate the Boost converter using ORCAD
More informationAC VOLTAGE CONTROLLER (RMS VOLTAGE CONTROLLERS)
AC VOLTAGE CONTROLLER (RMS VOLTAGE CONTROLLERS) INTRODUCTION AC voltage controllers (AC line voltage controllers): are employed to vary the RMS value of the alternating voltage applied to a load circuit
More informationDHANALAKSHMI COLLEGE OF ENGINEERING DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING
DHANALAKSHMI COLLEGE OF ENGINEERING DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING Power Diode EE2301 POWER ELECTRONICS UNIT I POWER SEMICONDUCTOR DEVICES PART A 1. What is meant by fast recovery
More informationELEC4240/ELEC9240 POWER ELECTRONICS
THE UNIVERSITY OF NEW SOUTH WALES FINAL EXAMINATION JUNE/JULY, 2003 ELEC4240/ELEC9240 POWER ELECTRONICS 1. Time allowed: 3 (three) hours 2. This paper has six questions. Answer any four. 3. All questions
More informationPower. Power is the rate of using energy in joules per second 1 joule per second Is 1 Watt
3 phase Power All we need electricity for is as a source of transport for energy. We can connect to a battery, which is a source of stored energy. Or we can plug into and electric socket at home or in
More informationDC Chopper. Prof. Dr. Fahmy El-khouly
DC Chopper Prof. Dr. Fahmy El-khouly Definitions: The power electronic circuit which converts directly from dc to dc is called dc-to-dc converter or dc-chopper. Chopper is a dc to dc transformer: The input
More informationR. W. Erickson. Department of Electrical, Computer, and Energy Engineering University of Colorado, Boulder
R. W. Erickson Department of Electrical, Computer, and Energy Engineering University of Colorado, Boulder 6.3.5. Boost-derived isolated converters A wide variety of boost-derived isolated dc-dc converters
More informationSIMULATIONS WITH THE BUCK-BOOST TOPOLOGY EE562: POWER ELECTRONICS I COLORADO STATE UNIVERSITY. Modified February 2006
SIMULATIONS WITH THE BUCK-BOOST TOPOLOGY EE562: POWER ELECTRONICS I COLORADO STATE UNIVERSITY Modified February 2006 Page 1 of 13 PURPOSE: The purpose of this lab is to simulate the Buck-Boost converter
More informationR. W. Erickson. Department of Electrical, Computer, and Energy Engineering University of Colorado, Boulder
R. W. Erickson Department of Electrical, Computer, and Energy Engineering University of Colorado, Boulder Inclusion of Switching Loss in the Averaged Equivalent Circuit Model The methods of Chapter 3 can
More informationPower Converters. Neil Marks. STFC ASTeC/ Cockcroft Institute/ U. of Liverpool, Daresbury Laboratory, Warrington WA4 4AD, U.K.
Power Converters Neil Marks STFC ASTeC/ Cockcroft Institute/ U. of Liverpool, Daresbury Laboratory, Warrington WA4 4AD, U.K. n.marks@dl.ac.uk Contents 1. Requirements. 2. Basic elements of power supplies.
More informationPower Supplies in Accelerators
Power Supplies in Accelerators Neil Marks, ASTeC, Cockcroft Institute, Daresbury, Warrington WA4 4AD, neil.marks@stfc.ac.uk Tel: (44) (0)1925 603191 Fax: (44) (0)1925 603192 Contents 1. Basic elements
More informationDr.Arkan A.Hussein Power Electronics Fourth Class. Operation and Analysis of the Three Phase Fully Controlled Bridge Converter
Operation and Analysis of the Three Phase Fully Controlled Bridge Converter ١ Instructional Objectives On completion the student will be able to Draw the circuit diagram and waveforms associated with a
More informationExperiment DC-DC converter
POWER ELECTRONIC LAB Experiment-7-8-9 DC-DC converter Power Electronics Lab Ali Shafique, Ijhar Khan, Dr. Syed Abdul Rahman Kashif 10/11/2015 This manual needs to be completed before the mid-term examination.
More information+ 24V 3.3K - 1.5M. figure 01
ELECTRICITY ASSESSMENT 35 questions Revised: 08 Jul 2013 1. Which of the wire sizes listed below results in the least voltage drop in a circuit carrying 10 amps: a. 16 AWG b. 14 AWG c. 18 AWG d. 250 kcmil
More information6. Explain control characteristics of GTO, MCT, SITH with the help of waveforms and circuit diagrams.
POWER ELECTRONICS QUESTION BANK Unit 1: Introduction 1. Explain the control characteristics of SCR and GTO with circuit diagrams, and waveforms of control signal and output voltage. 2. Explain the different
More informationSIMULATION WITH THE BOOST TOPOLOGY ECE562: Power Electronics I COLORADO STATE UNIVERSITY. Modified in Fall 2011
SIMULATION WITH THE BOOST TOPOLOGY ECE562: Power Electronics I COLORADO STATE UNIVERSITY Modified in Fall 2011 ECE 562 Boost Converter (NL5 Simulation) Laboratory 2 Page 1 PURPOSE: The purpose of this
More informationCalhoon MEBA Engineering School. Study Guide for Proficiency Testing Industrial Electronics
Calhoon MEBA Engineering School Study Guide for Proficiency Testing Industrial Electronics January 0. Which factors affect the end-to-end resistance of a metallic conductor?. A waveform shows three complete
More informationTSTE19 Power Electronics. Lecture3 Tomas Jonsson ICS/ISY
TSTE19 Power Electronics Lecture3 Tomas Jonsson ICS/ISY 2015-11-09 2 Outline Rectifiers Current commutation Rectifiers, cont. Three phase 2015-11-09 3 Effect of L s on current commutation Current commutation
More informationExperiment No.15 DC-DC Converters
Experiment No.15 DC-DC Converters Experiment aim The aim of Experiment is to analyze the operation (Switching) of DC-DC converter with resistive load. Apparatus 1. Power electronic trainer 2. Connection
More informationDr.Arkan A.Hussein Power Electronics Fourth Class. Commutation of Thyristor-Based Circuits Part-I
Commutation of Thyristor-Based Circuits Part-I ١ This lesson provides the reader the following: (i) (ii) (iii) (iv) Requirements to be satisfied for the successful turn-off of a SCR The turn-off groups
More informationPOWER ELECTRONICS LAB
MUFFAKHAM JAH COLLEGE OF ENGINEERING & TECHNOLOGY Banjara Hills Road No 3, Hyderabad 34 www.mjcollege.ac.in DEPARTMENT OF ELECTRICAL ENGINEERING LABORATORY MANUAL POWER ELECTRONICS LAB For B.E. III/IV
More informationChapter 2 Buck PWM DC DC Converter
Chapter 2 Buck PWM DC DC Converter H. Wang, Power Management and High-speed I/O in CMOS Systems 1/25 Buck Circuit and Its equivalent circuits CCM: continuous conduction mode DCM: discontinuous conduction
More informationVALLIAMMAI ENGINEERING COLLEGE DEPARTMENT OF ELECTRONICS AND INSTRUMENTATION
VALLIAMMAI ENGINEERING COLLEGE DEPARTMENT OF ELECTRONICS AND INSTRUMENTATION Sem / Branch : V /EIE Subject code /Title: EI2301/Industrial Electronics UNIT-1 POWER DEVICES 1. What are the different methods
More informationSingle-Phase Half-Wave Rectifiers
ectifiers Single-Phase Half-Wave ectifiers A rectifier is a circuit that converts an ac signal into a unidirectional signal. A single-phase half-way rectifier is the simplest type. Although it is not widely
More informationInvestigation and Performance Analysis of Dc-Dc Converter for High Efficiency Led Driver
IJIRST International Journal for Innovative Research in Science & Technology Volume 2 Issue 12 May 2016 ISSN (online): 2349-6010 Investigation and Performance Analysis of Dc-Dc Converter for High Efficiency
More informationPower Electronics in PV Systems
Introduction to Power Electronics in PV Systems EEN 2060 References: EEN4797/5797 Intro to Power Electronics ece.colorado.edu/~ecen5797 Textbook: R.W.Erickson, D.Maksimovic, Fundamentals of Power Electronics,
More informationSample Exam Solution
Session 44; 1/6 Sample Exam Solution Problem 1: You are given a single phase diode rectifier, as shown below. Do the following: L d I s v (t) s L s C d V d Load : 310V Xs : 0.4ohm at 400 Hz Vspk : 360V
More informationLecture 5 - Uncontrolled rectifier circuits I
Lecture 5 - Uncontrolled rectifier circuits I ectifier circuits convert A source into source which supplies to a load. The qualities of input current and output voltage waveforms, efficiency input transformer
More informationMAHARASHTRA STATE BOARD OF TECHNICAL EDUCATION
Important Instructions to examiners: 1) The answers should be examined by key words and not as word-to-word as given in the model answer scheme. 2) The model answer and the answer written by candidate
More informationTechnical. Application. Assembly. Availability. Pricing. Phone
6121 Baker Road, Suite 108 Minnetonka, MN 55345 www.chtechnology.com Phone (952) 933-6190 Fax (952) 933-6223 1-800-274-4284 Thank you for downloading this document from C&H Technology, Inc. Please contact
More informationECEN4797/5797 Lecture #11
ECEN4797/5797 Lecture #11 Announcements On-campus students: pick up graded HW2, turn in HW3 Homework 4 is due in class on Friday, Sept. 23. The grace-period for offcampus students expires 5pm (Mountain)
More informationFigure Derive the transient response of RLC series circuit with sinusoidal input. [15]
COURTESY IARE Code No: R09220205 R09 SET-1 B.Tech II Year - II Semester Examinations, December-2011 / January-2012 NETWORK THEORY (ELECTRICAL AND ELECTRONICS ENGINEERING) Time: 3 hours Max. Marks: 80 Answer
More informationExamples Paper 3B3/4 DC-AC Inverters, Resonant Converter Circuits. dc to ac converters
Straightforward questions are marked! Tripos standard questions are marked * Examples Paper 3B3/4 DC-AC Inverters, Resonant Converter Circuits dc to ac converters! 1. A three-phase bridge converter using
More information2.0 AC CIRCUITS 2.1 AC VOLTAGE AND CURRENT CALCULATIONS. ECE 4501 Power Systems Laboratory Manual Rev OBJECTIVE
2.0 AC CIRCUITS 2.1 AC VOLTAGE AND CURRENT CALCULATIONS 2.1.1 OBJECTIVE To study sinusoidal voltages and currents in order to understand frequency, period, effective value, instantaneous power and average
More informationTENTATIVE PP225D120. POW-R-PAK TM 225A / 1200V Half Bridge IGBT Assembly. Description:
Description: The Powerex is a configurable IGBT based power assembly that may be used as a converter, chopper, half or full bridge, or three phase inverter for motor control, power supply, UPS or other
More informationLedex Drive Electronics and Coil Suppressors
Ledex and Coil Suppressors Ledex Coil Suppressors A voltage is generated by a changing magnetic field in proximity to a current-carrying member. The equation E = -N dø /dt, describes this by saying that
More information55:141 Advanced Circuit Techniques Switching Regulators
55:141 Advanced Circuit Techniques Switching Regulators Material: ecture Notes, Handouts, and Sections of Chapter 11 of Franco A. Kruger 55:141: Advanced Circuit Techniques The University of Iowa Switching
More informationDesign and Simulation of Synchronous Buck Converter for Microprocessor Applications
Design and Simulation of Synchronous Buck Converter for Microprocessor Applications Lakshmi M Shankreppagol 1 1 Department of EEE, SDMCET,Dharwad, India Abstract: The power requirements for the microprocessor
More informationPOWER ELECTRONICS PO POST GRAD POS UATE 2010 AC Ch AC o Ch p o per Prepare Prep d are by: d Dr. Gamal Gam SOwilam SOwila 11 December 2016 ١
POWER ELECTRONICS POST GRADUATE 2010 AC Chopper Prepared by: Dr. Gamal SOwilam 11 December 2016 ١ 1. Introduction AC Chopper is An AC to AC Converter employs to vary the rms voltage across the load at
More informationLecture 19 - Single-phase square-wave inverter
Lecture 19 - Single-phase square-wave inverter 1. Introduction Inverter circuits supply AC voltage or current to a load from a DC supply. A DC source, often obtained from an AC-DC rectifier, is converted
More informationChapter 6: Converter circuits
Chapter 6. Converter Circuits 6.1. Circuit manipulations 6.2. A short list of converters 6.3. Transformer isolation 6.4. Converter evaluation and design 6.5. Summary of key points Where do the boost, buck-boost,
More informationRECTIFIERS AND POWER SUPPLIES
UNIT V RECTIFIERS AND POWER SUPPLIES Half-wave, full-wave and bridge rectifiers with resistive load. Analysis for Vdc and ripple voltage with C,CL, L-C and C-L-C filters. Voltage multipliers Zenerdiode
More informationCHAPTER 5 MODIFIED SINUSOIDAL PULSE WIDTH MODULATION (SPWM) TECHNIQUE BASED CONTROLLER
74 CHAPTER 5 MODIFIED SINUSOIDAL PULSE WIDTH MODULATION (SPWM) TECHNIQUE BASED CONTROLLER 5.1 INTRODUCTION Pulse Width Modulation method is a fixed dc input voltage is given to the inverters and a controlled
More informationLECTURE.3 : AC-DC CONVERSION
LECTURE.3 : AC-DC CONVERSION (RECTIFICATIONS) 3.1Basic Rectifier Circuits Several types of rectifier circuits are available: single-phase and three-phase half-wave and full-wave, controlled and uncontrolled,
More informationCHAPTER 2 A SERIES PARALLEL RESONANT CONVERTER WITH OPEN LOOP CONTROL
14 CHAPTER 2 A SERIES PARALLEL RESONANT CONVERTER WITH OPEN LOOP CONTROL 2.1 INTRODUCTION Power electronics devices have many advantages over the traditional power devices in many aspects such as converting
More informationMCR8DSM, MCR8DSN. Thyristors. Surface Mount 600V - 800V > MCR8DSM, MCR8DSN G K. Description
MCR8DSM, MCR8DSN Pb Description Designed for high volume, low cost, industrial and consumer applications such as motor control; process control; temperature, light and speed control. Features Small Size
More informationConventional Paper-II-2011 Part-1A
Conventional Paper-II-2011 Part-1A 1(a) (b) (c) (d) (e) (f) (g) (h) The purpose of providing dummy coils in the armature of a DC machine is to: (A) Increase voltage induced (B) Decrease the armature resistance
More informationR. W. Erickson. Department of Electrical, Computer, and Energy Engineering University of Colorado, Boulder
R. W. Erickson Department of Electrical, Computer, and Energy Engineering University of Colorado, Boulder pn junction! Junction diode consisting of! p-doped silicon! n-doped silicon! A p-n junction where
More informationCourseware Sample F0
Electric Power / Controls Courseware Sample 85822-F0 A ELECTRIC POWER / CONTROLS COURSEWARE SAMPLE by the Staff of Lab-Volt Ltd. Copyright 2009 Lab-Volt Ltd. All rights reserved. No part of this publication
More informationPower Factor Pre-regulator Using Constant Tolerance Band Control Scheme
Power Factor Pre-regulator Using Constant Tolerance Band Control Scheme Akanksha Mishra, Anamika Upadhyay Akanksha Mishra is a lecturer ABIT, Cuttack, India (Email: misakanksha@gmail.com) Anamika Upadhyay
More information30CPQ Amp SCHOTTKY RECTIFIER. Case Styles. Bulletin PD rev. B 12/01. Description/ Features. Major Ratings and Characteristics
Bulletin PD-.99 rev. B /0 SCHOTTKY RECTIFIER 30CPQ50 30 Amp Major Ratings and Characteristics Characteristics 30CPQ50 Units I F(AV) Rectangular 30 A waveform V RRM 50 V I FSM @ tp = 5 µs sine 000 A V F
More information409DMQ... Series SCHOTTKY RECTIFIER. 400 Amp. Bulletin PD rev. B 10/02. Description/ Features. Major Ratings and Characteristics
Bulletin PD-20724 rev. B 0/02 409DMQ... Series SCHOTTKY RECTIFIER 400 Amp TO-244AB isolated doubler Major Ratings and Characteristics Characteristics 409DMQ... Units I F(AV) Rectangular 400 A waveform
More informationMICROCONTROLLER BASED BOOST PID MUNAJAH BINTI MOHD RUBAEE
MICROCONTROLLER BASED BOOST PID MUNAJAH BINTI MOHD RUBAEE This thesis is submitted as partial fulfillment of the requirement for the award of Bachelor of Electrical Engineering (Power System) Faculty of
More informationLENDI INSTITUTE OF ENGINEERING & TECHNOLOGY
LENDI INSTITUTE OF ENGINEERING & TECHNOLOGY (Approved by A.I.C.T.E & Affiliated to JNTU,Kakinada) Jonnada (Village), Denkada (Mandal), Vizianagaram Dist 535 005 Phone No. 08922-241111, 241112 E-Mail: lendi_2008@yahoo.com
More informationELG3336: Power Electronics Systems Objective To Realize and Design Various Power Supplies and Motor Drives!
ELG3336: Power Electronics Systems Objective To Realize and Design arious Power Supplies and Motor Drives! Power electronics refers to control and conversion of electrical power by power semiconductor
More informationSilicon Bidirectional Thyristors
Preferred Device Silicon Bidirectional Thyristors Designed for high performance full-wave ac control applications where high noise immunity and high commutating di/dt are required. Blocking Voltage to
More informationCHAPTER 6 BRIDGELESS PFC CUK CONVERTER FED PMBLDC MOTOR
105 CHAPTER 6 BRIDGELESS PFC CUK CONVERTER FED PMBLDC MOTOR 6.1 GENERAL The line current drawn by the conventional diode rectifier filter capacitor is peaked pulse current. This results in utility line
More information20CJQ060 SCHOTTKY RECTIFIER. 2 Amp. Case Styles. I F(AV) = 2 Amp V R = 60V. Bulletin PD rev. G 07/06. Description/ Features
20CJQ060 SCHOTTKY RECTIFIER 2 Amp I F(AV) = 2 Amp V R = 60V Major Ratings and Characteristics Characteristics Values Units I F(AV) Rectangular 2.0 A waveform V RRM 60 V I FSM @ tp = 5 μs sine 385 A V F
More informationElectronic Circuits I Laboratory 03 Rectifiers
Electronic Circuits I Laboratory 03 Rectifiers # Student ID Student Name Grade (10) 1 Instructor signature 2 3 4 5 Delivery Date -1 / 18 - Objectives In this experiment, you will get to know a group of
More informationPower Electronics. Prof. B. G. Fernandes. Department of Electrical Engineering. Indian Institute of Technology, Bombay.
Power Electronics Prof. B. G. Fernandes Department of Electrical Engineering Indian Institute of Technology, Bombay Lecture - 28 So far we have studied 4 different DC to DC converters. They are; first
More informationPKG-232-MBC12-PS-CBL System Diagram and Specifications
PKG-232-MBC12-PS-CBL System Diagram and Specifications Included Components: 23Y206S-LW8-MS Stepper Motor MBC12101 Stepper Driver PSA80V4A-1 Power Supply CBL-18AWG-04C-010-MS Motor Cable WIR-1007-18-YEL
More informationIntroduction to High-Speed Power Switching
Exercise 3 Introduction to High-Speed Power Switching EXERCISE OBJECTIVE When you have completed this exercise, you will be familiar with the concept of voltage-type and current-type circuits. You will
More informationSKEU 3741 BASIC ELECTRONICS LAB
Faculty: Subject Subject Code : SKEU 3741 FACULTY OF ELECTRICAL ENGINEERING : 2 ND YEAR ELECTRONIC DESIGN LABORATORY Review Release Date Last Amendment Procedure Number : 1 : 2013 : 2013 : PK-UTM-FKE-(0)-10
More informationCHAPTER 6: ALTERNATING CURRENT
CHAPTER 6: ALTERNATING CURRENT PSPM II 2005/2006 NO. 12(C) 12. (c) An ac generator with rms voltage 240 V is connected to a RC circuit. The rms current in the circuit is 1.5 A and leads the voltage by
More informationDUAL STEPPER MOTOR DRIVER
DUAL STEPPER MOTOR DRIVER GENERAL DESCRIPTION The is a switch-mode (chopper), constant-current driver with two channels: one for each winding of a two-phase stepper motor. is equipped with a Disable input
More informationDesigning and Implementing of 72V/150V Closed loop Boost Converter for Electoral Vehicle
International Journal of Current Engineering and Technology E-ISSN 77 4106, P-ISSN 347 5161 017 INPRESSCO, All Rights Reserved Available at http://inpressco.com/category/ijcet Research Article Designing
More informationEND-OF-SUBCOURSE EXAMINATION
END-OF-SUBCOURSE EXAMINATION Circle the letter of the correct answer to each question. When you have answered all of the questions, use a Number 2 pencil to transfer your answers to the TSC Form 59. 1.
More informationAfter performing this experiment, you should be able to:
Objectives: After performing this experiment, you should be able to: Demonstrate the strengths and weaknesses of the two basic rectifier circuits. Draw the output waveforms for the two basic rectifier
More informationSINGLE PHASE CURRENT SOURCE INVERTER (C.S.I)
Power Electronics Laboratory SINGLE PHASE CURRENT SOURCE INVERTER (C.S.I) OBJECT: To study the gate firing pulses. To observe and measure the voltages across the Thyristors and across the Load for a current
More informationPower Electronics Laboratory-2 Uncontrolled Rectifiers
Roll. No: Checked By: Date: Grade: Power Electronics Laboratory-2 and Uncontrolled Rectifiers Objectives: 1. To analyze the working and performance of a and half wave uncontrolled rectifier. 2. To analyze
More informationDesigning buck chopper converter by sliding mode technique
International Research Journal of Applied and Basic Sciences 2014 Available online at www.irjabs.com ISSN 2251-838X / Vol, 8 (9): 1289-1296 Science Explorer Publications Designing buck chopper converter
More informationTENTATIVE PP800D120-V01
Description: The Powerex POW-R-PAK is a configurable IGBT based power assembly that may be used as a converter, chopper, half or full bridge, or three phase inverter for motor control, power supply, UPS
More informationECE 1750 Week ( part (part 1) Rectifiers
ECE 1750 Week 3 (part 1) Rectifiers 1 Rectifier Rectifiers convert ac into dc Some commercial rectifiers: (Used to charge batteries like those on the right) Example of Assumed State Analysis V ac R L Consider
More informationControl of buck-boost chopper type AC voltage regulator
International Journal of Research in Advanced Engineering and Technology ISSN: 2455-0876; Impact Factor: RJIF 5.44 www.engineeringresearchjournal.com Volume 2; Issue 3; May 2016; Page No. 52-56 Control
More informationDepartment of Electrical Engineering, DESCOET Dhamangaon Rly, India
IJESRT INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY FOUR QUADRANT SPEED CONTROL OF DC MOTOR USING CHOPPER Devika R. Yengalwar *, Samiksha S. Zade, Dinesh L. Mute * Department of
More informationSine-wave oscillator
Sine-wave oscillator In Fig. 1, an op-'amp can be made to oscillate by feeding a portion of the output back to the input via a frequency-selective network, and controlling the overall voltage gain. For
More informationELECTRONIC CONTROL OF A.C. MOTORS
CONTENTS C H A P T E R46 Learning Objectives es Classes of Electronic AC Drives Variable Frequency Speed Control of a SCIM Variable Voltage Speed Control of a SCIM Chopper Speed Control of a WRIM Electronic
More informationELECTRONICS LABORATORY PART 2 ISTANBUL COMMERCE UNIVERSITY. Assoc. Prof. Serhan Yarkan
ELECTRONICS LABORATORY PART 2 Assoc. Prof. Serhan Yarkan ISTANBUL COMMERCE UNIVERSITY Contents FILTER CIRCUITS... 2 3.1 INTRODUCTION... 2 3.2 CAPACITOR AND COIL IN FILTER CIRCUITS... 2 VOLTAGE MULTIPLIERS...
More informationPOWER ELECTRONICS LAB MANUAL
JIS College of Engineering (An Autonomous Institution) Department of Electrical Engineering POWER ELECTRONICS LAB MANUAL Exp-1. Study of characteristics of an SCR AIM: To obtain the V-I characteristics
More informationLinear Peak Current Mode Controlled Non-inverting Buck-Boost Power-Factor-Correction Converter
Linear Peak Current Mode Controlled Non-inverting Buck-Boost Power-Factor-Correction Converter Mr.S.Naganjaneyulu M-Tech Student Scholar Department of Electrical & Electronics Engineering, VRS&YRN College
More informationRenewable Energy Based Interleaved Boost Converter
Renewable Energy Based Interleaved Boost Converter Pradeepakumara V 1, Nagabhushan patil 2 PG Scholar 1, Professor 2 Department of EEE Poojya Doddappa Appa College of Engineering, Kalaburagi, Karnataka,
More informationDevelopment of a Single-Phase PWM AC Controller
Pertanika J. Sci. & Technol. 16 (2): 119-127 (2008) ISSN: 0128-7680 Universiti Putra Malaysia Press Development of a Single-Phase PWM AC Controller S.M. Bashi*, N.F. Mailah and W.B. Cheng Department of
More informationModule 1. Power Semiconductor Devices. Version 2 EE IIT, Kharagpur 1
Module 1 Power Semiconductor Devices Version EE IIT, Kharagpur 1 Lesson 8 Hard and Soft Switching of Power Semiconductors Version EE IIT, Kharagpur This lesson provides the reader the following (i) (ii)
More informationPP400B060-ND. H-Bridge POW-R-PAK IGBT Assembly 400 Amperes/600 Volts
Powerex, Inc., 173 Pavilion Lane, Youngwood, Pennsylvania 15697 (724) 925-7272 www.pwrx.com H-Bridge POW-R-PAK IGBT Assembly Q Q J P (8 PLACES) +DC C2E1 R (2 PLACES) PIN 1 N U B M N F DC L (6 PLACES) G
More informationz z" z v 2 ft = 2k ft. 328 Concepts of Physics The energy dissipated in 1000 s = P * 1000 s
38 Concepts of Physics. A series AC circuit contains an inductor ( mh), a capacitor ( (JF), a resistor ( ft) and an AC source of V, Hz. Find the energy dissipated in the circuit in s. Solution : The time
More information1N6097 1N Amp SCHOTTKY RECTIFIER. Bulletin PD rev. B 11/02. Description/ Features. Major Ratings and Characteristics
Bulletin PD-2.329 rev. B /02 N6097 N6098 SCHOTTKY ECTIFIE 50 Amp Major atings and Characteristics Description/ Features TO-203AB (DO-5) Characteristics N609. Units I F(AV) ectangular 50* A waveform V M
More information