* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download project sample format - Sathyabama University
Josephson voltage standard wikipedia , lookup
Valve RF amplifier wikipedia , lookup
Electrical engineering wikipedia , lookup
Molecular scale electronics wikipedia , lookup
Immunity-aware programming wikipedia , lookup
Operational amplifier wikipedia , lookup
Index of electronics articles wikipedia , lookup
Electronic engineering wikipedia , lookup
Resistive opto-isolator wikipedia , lookup
Schmitt trigger wikipedia , lookup
Analog-to-digital converter wikipedia , lookup
Surge protector wikipedia , lookup
Voltage regulator wikipedia , lookup
Opto-isolator wikipedia , lookup
Television standards conversion wikipedia , lookup
Current mirror wikipedia , lookup
Power MOSFET wikipedia , lookup
Coupon-eligible converter box wikipedia , lookup
Integrating ADC wikipedia , lookup
Power electronics wikipedia , lookup
BRIDGELESS BOOST RECTIFIER FOR LOW VOLTAGE APPLICATION Submitted in partial fulfillment of the requirements for the award of Bachelor of Engineering Degree in Electrical and Electronics Engineering by SRINATH.G (Reg. No. 3014220) SRINIVAS SAIPRASAD.S (Reg. No. 3014221) DEPARTMENT OF ELECTRICAL AND ELECTRONICS ENGINEERING SCHOOL OF ELECTRICAL AND ELECTRONICS SATHYABAMA UNIVERSITY JEPPIAAR NAGAR, RAJIV GANDHI SALAI, CHENNAI – 600119. TAMILNADU. MARCH 2017 i SATHYABAMA UNIVERSITY (Established under Section 3 of UGC Act, 1956) Jeppiaar Nagar, Rajiv Gandhi Salai, Chennai - 600 119 www.sathyabamauniversity.ac.in DEPARTMENT OF ELECTRICAL AND ELECTRONICS BONAFIDE CERTIFICATE This is to certify that this Project Report is the bonafide work of SRINATH.G (Reg. No. 3014220) and SRINIVAS SAIPRASAD (Reg. No.3014221) who carried out the project entitled “BRIDGELESS BOOST RECTIFIER FOR LOW VOLTAGE APPLICATION” under our supervision from September 2016 to March 2017. Internal Guide XXXXXX Head of the Department XXXXXX Submitted for Viva voce Examination held on_____________________ Internal Examiner External Examiner ii DECLARATION We SRINATH.G (Reg. No. 3014220) and SRINIVAS SAIPRASAD (Reg. No.3014221) hereby declare that the Project Report entitled “BRIDGELESS BOOST RECTIFIER FOR LOW VOLTAGE APPLICATION” done by us under the guidance of XXXXXX is submitted in partial fulfillment of the requirements for the award of Bachelor of Engineering degree in Electrical and Electronics. 1. 2. DATE: PLACE: SIGNATURE OF THE CANDIDATE iii ACKNOWLEDGEMENT The satisfaction and elation that accompany the successful completion of any task would be incomplete without the mention of the people who have made it possible. It is our great privilege to express our gratitude and respect to all those who have guided us and inspired us during the course of our project work. First and foremost, we would express our sincere gratitude to our beloved Founder Chancellor Col. Dr. JEPPIAAR, M.A., B.L., Ph.D., Chancellor Thirumathi. REMIBAI JEPPIAAR and also thank our Directors Dr. MarieJohnson, B.E., M.B.A., M.Phil., Ph.D and Dr. Mariazeena Johnson, B.E., M.B.A., M.Phil., Ph.D for providing us the necessary facilities for the completion of our project. We also acknowledge our Vice Chancellor Dr. B. Sheela Rani, M.S (By Research)., Ph.D. for her constant support and endorsement. We would like to express our gratitude to our Registrar Dr. S. S. Rau., Ph.D and Controller of Examinations Dr. K. V. Narayanan., Ph.D for providing us the necessary facilities for the completion of our project. We like to express our gratitude to XXXXXX Dean, School of Electrical and Electronics and XXXXXX Head of the Department of Electrical and Electronics Engineering, Sathyabama University for having been a constant source of support and encouragement for the completion of the project. We would also like to express our sincere thanks to our internal guide of the project XXXXXX, for her constant guidance and supervision during the period of our project work and for providing us the necessary technical inputs for the completion of our project. iv ABSTRACT In this project, a single-stage ac–dc power electronic converter is proposed to efficiently manage the energy harvested from electromagnetic microscale and mesoscale generators with low-voltage outputs. The proposed topology combines a boost converter and a buck-boost converter to condition the positive and negative half portions of the input ac voltage, respectively. Only one inductor and capacitor are used in both circuitries to reduce the size of the converter. v TABLE OF CONTENTS CHAPTER No. TITLE PAGE No. 1 2. 3 ABSTRACT v LIST OF TABLES ix LIST OF FIGURES ix LIST OF SYMBOLS AND ABBREVIATIONS xi INTRODUCTION 1 1.1 OUTLINE OF THE PROJECT 1 1.2 DC-DC CONVERTER 4 1.3 BUCK CONVERTER STEP-DOWN CONVERTER 4 1.4 TRANSITION BETWEEN CONTINUOUS AND DISCONTINUOUS 6 1.5 VOLTAGE RATOP OF BUCK CONVERTER 7 1.6 BOOST CONVERTER STEP-UP CONVERTER 10 1.7 BUCK-BOOST CONVERTER 11 1.8 CONVERTER COMPARISON 13 1.9 CUK CONVERTER 13 1.10 ISOLATED DC-DC Converters 15 1.10.1 Flyback Converter 16 1.10..2 Forward Converter 17 BRIDGELESS PFC BOOST RECTIFIERS 21 2.1 INTRODUCTION 20 2.2 PROPOSED CIRCUIT AND WORKING PRINCIPLE 28 2.3 MODES OF OPERATION 39 SIMULATION 32 3.1 32 GENERAL vi CHAPTER No. 3.1.1 4 TITLE PAGE No. purpose of simulation 32 3.1.2 MATlab 32 3.2 SIMULATION DIAGRAM 33 3.3 PULSE WIDTH MODULATION 35 3.3.1 35 Pluse width modulation inverter 3.3.2 Pwm generation technique 36 3.4 ADVANTAGES OF INVERTER 36 3.5 OBJECTIVE 37 HARDWARE BLOCK DESCRIPTION 38 4.1 GENERAL 38 4.2 BLOCK DIAGRAM 38 4.3 POWER SUPPLY 38 4.4 PERIPHERAL INTERFACE CONTROLLER 39 4.4.1 Driver unit 39 4.4.2 Pulse-width modulation 39 4.5 4.6 HARDWARE DISCRIPTION 40 4.5.1 Step down transformer 41 4.5.2 Rectifier unit 41 4.5.3 Filteration unit 42 4.5.4 Voltage regulators 42 PIC MICROCONTROLLER 43 4.6.1 High-performance risc cpu 43 4.6.2 Peripheral features 43 4.7 Analog Features 44 4.8 Special Microcontroller Features 44 4.9 CMOS Technology 44 4.10 VICE OVERVIEW 45 4.10.1 Vice overview 45 4.10.2 Memory organization 46 4.10.3 Program memory organization 46 vii CHAPTER No. PAGE No. 4.10.4 Data memory organization 47 I/O PORTS 48 4.11.1 Port a and the trisa Register 48 4.11.2 Port b and the trisa Register 48 4.11.3 Port c and the trisa Register 49 4.11.4 Port d and the trisa Register 50 4.11.5 Port e and the trisa Register 50 4.12 ALGORITHM 51 4.13 FLOW CHART 52 4.14 DRIVER CIRCUIT 53 4.14.1 Optocoupler 53 4.14.2 Darlington amplifier 55 MOSFET 56 4.15.1 Mosfet regions of operation 56 4.15.2 Diode 57 4.11 4.15 5 TITLE CONCLUSION 58 REFERENCES 69 APPENDICES 61 viii LIST OF TABLES TABLE No. 4.1 TITLE PORTD Functions PAGE No. 51 ix LIST OF FIGURES FIGURE No. TITLE PAGE No. 1.1 General diagram of an electromagnetic micro generator 2 1.2 Conventional two-stage diode-bridge ac-dc converters 2 boost rectifier ,Buck-boost rectifier 1.3 Buck Converter 5 1.4 Voltage and current changes 5 1.5 Buck Converter at Boundary 7 1.6 Buck Converter - Discontinuous Conduction 8 1.7 Output Voltage vs Current 10 1.8 Boost Converter Circuit 11 1.9 Voltage and current waveforms 12 1.10 schematic for buck-boost converter 12 1.11 Waveforms for buck-boost converter 13 1.12 Comparison of Voltage ratio 14 1.13 CUK Converter 15 1.14 CUK ON-STATE 15 1.15 CUK OFF-STATE 15 1.16.(a) Buck-Boost Converter 17 1.16.(b) Replacing inductor by transformer 17 1.16.(c) Fly back converter re-configured 18 1.17 Forward Converter 18 1.18 Forward converter with tertiary winding 19 2.1 basic bridgeless pfc boost rectifier 21 2.2 conventional pfc boost rectifier 22 2.3 Basic bridgeless pfc boost rectifier 23 3.1 simulation block diagram 34 3.2 Simulation circuit dig. and Simulation Output 35 3.3 PWN graph 37 4.1 Hardware Block diagram 39 4.2 POWER SUPPLU UNIT 41 4.3 pin diagram 46 x LIST OF SYMBOLS AND ABBREVIATIONS Lr - Resonant Inductor Ls - Series Resonant Inductor Cr - Resonant Capacitor Cs - Series Resonant Capacitor Cos - Power Factor R - Resistance Z - Impedance XL - Inductance Reactance Xc - Capacitive Reactance Vc - Voltage across capacitor Vin - Input voltage Vout - Output voltage Edc - Input DC voltage iR - Current through the resistor 0 - Resonant angular frequency BJT - Bipolar Junction Transistor BLDC - Brush Less Direct Current EMC - Electro Magnetic Component EMI - Electro Magnetic Interference FBSR - Full Bridge Series Resonant HBSR - Half Bridge Series Resonant HF - High Frequency IGBT - Insulated Gate Bipolar Transistor MOSFET - Metal Oxide Semiconductor Field Effect Transistor xi