bidirectional dc-dc isolated converter
TRANSCRIPT
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BIDIRECTIONAL ISOLATED DC-DC CONVERTER FOR 20KW APPLICATIONBY
P.VASUDEVA GUPTHA14MPE0044
INTERNAL Prof. N. Arun
(Assistant Professor) Power Electronics and Drives Dept., V.I.T UNIVERSITY, VELLORE .
EXTERNALSh. Rahul Verma
(Scientist G)IEG Group Head,
CSIR-CEERI,PILLANI.
Under the guidance of
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COMPANY DETAILS
• INDUSTRY NAME – CSIR-Central Electronics Engineering Research Institute• ADDRESS - CSIR-CEERI• CEERI Road,• Pilani,• Jhunjhunu District,• Rajasthan,• 333031.• GUIDE - Sh. Rahul Verma ( Scientist G)• EMAIL - [email protected]• WEBSITE - http://www.ceeri.res.in/• INTERNSHIP - Not Through PAT• STARTING DATE - 1-08-2015• ENDING DATE - 30-04-2016• DURATION - 9 Months• STIPEND - NO
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AIM/OBJECTIVES
To design Bi-directional isolated DC-DC converter for 20KW Application
OBJECTIVES:
1. To Provide Safety
2. To reduce power loss
3. To reduce size, weight and cost
4. To achieve Thermal considerations
5. To reduce Electro-magnetic interference
6. To implement Soft Switching Techniques
AIM:
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SPECIFICATIONS
1. Input voltage – 100V
2. Output voltage – 600V
3. Output power – 20KW
4. Switching frequency – 20KHz
ADDITIONAL REQUIREMENTS
1. Galvanic Isolation – For safety purpose
2. High Conversion Efficiency
3. Lower converter volume – obtained by high switching frequency
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INTRODUCTION1. Bidirectional convertor allows the power flow in both directions
2. Bidirectional convertor operates in two modes BOOST MODE BUCK MODE
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BOOST MODE
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OUTPUT VOLTAGE
OUTPUT CURRENT
OUTPUT VOLTAGE : 618.5 voltsOUTPUT CURRENT : 32.4 ampsOUTPUT POWER : 20,039.4 wattsOUTPUT RESISTANCE : 18.5 ohmsSWITCHING FREQUENCY:20KHZDUTY Ratio : 0.6
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ZCS SOFT SWITCHING OF PRIMARY SWITCHES
V1: switch voltageI1: switch current
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BUCK MODE
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INPUT VOLTAGE : 600OUTPUT VOLTAGE : 102.9 voltsOUTPUT CURRENT : 202 ampsOUTPUT POWER : 20,785wattsOUTPUT RESISTANCE : 0.5 ohmsSWITCHING FREQUENCY:20KHZDUTY RATIO : 0.5
OUTPUT VOLTAGE
OUTPUT CURRENT
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ZVS SOFT SWITCHING OF PRIMARY SWITCHES
V2: switch voltageI2: switch current
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TRANSFORMER DESIGN
REQUIREMENTS:
1. AMCC-400 CORE MATERIAL2. PRIMARI TURNS: 113. SECONDARY TURNS:274. TURNS RATIO :2.45. CURRENT DENSITY :6 A/mm2
CALCULATION RESULTS6. CORE LOSS : 40 WATTS7. COPPER LOSS : 76 WATTS8. TOTAL LOSS:116 WATTS
COPPER FOIL REQUIREMENT1.PRIMARY: 10mm * 1.8mm2. SECONDARY : 10mm * 0.8mm
Ip :96A
Is :41A
POWER: 10KWATTS
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DSP – TMS320F28027
FEAUTERS:
1. Frequency : 60MHz (16.67-ns Cycle Time)2. High-Efficiency 32-Bit CPU
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August 2015 Literature review
September Topology Selection
October Simulation
November Transformer Design
December Coding
January Hardware Implementation
February Testing
March Documentation
WORK PLAN
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1. Martin Pavlovsky, Sjoerd Walter Hero de Haan, and Jan Abraham Ferreira, “Reaching High Power Density in Multi kilowatt DC–DC Converters With Galvanic Isolation” I.E.E.E Power Electronics,2009
2. R. Y. Chen, R. L. Lin, T. J. Liang, J. F. Chen, and K. C. Tseng, ” Current-fed Full-bridge Boost Converter with Zero Current Switching for High Voltage Applications ” I.E.E.E Power Electronics,2005
3. Pan Xuewei, Student Member IEEE, Akshay K. Rathore, Senior Member IEEE,” Novel Bidirectional Snubberless Soft-switching Naturally Clamped Zero Current Commutated Current fed Dual Active Bridge (CFDAB) Converter for Fuel Cell Vehicles ” I.E.E.E Power Electronics,2013
4. Pan Xuewei, Student Member and Akshay K Rathore, Senior Member, IEEE,” Comparison of Bi-directional Voltage-fed and Current-fed Dual Active Bridge Isolated Dc/Dc Converters Low Voltage High Current Applications” I.E.E.E Power Electronics,2014
REFERENCES:
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5. Manu Jain, M. Daniele, and Praveen K. Jain, “A Bidirectional DC–DC Converter Topology for Low Power Application” I.E.E.E Power Electronics,2000
6. F. Krismer, S. Round, J. W. Kolar, ” Performance Optimization of a High Current Dual Active Bridgewith a Wide Operating Voltage Range” I.E.E.E Power Electronics,2006
7.Yao-Ching Hsieh, Yong-Nong Chang, Kun-Ying Lee Yu-Chun Chiu Wei-Ting Wu,” Bidirectional Softly Switched DC-to-DC Converter with Galvanic Isolation” I.E.E.E Power Electronics,2015
8. M. A. Bahmani and T. Thiringer, M. Kharezy” Design Methodology and Optimization of a Medium Frequency Transformer for High Power DC-DC Applications” I.E.E.E Power Electronics,2015
REFERENCES:
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THANK YOU