Seminar report

1. Multi Objective Design and
Benchmark of Wide Voltage Range
Phase-Shift Full Bridge DC/DC
Converter for EV Charging
Application
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b

2. Introduction
Understand the importance of efficient and reliable DC/DC converters for electric vehicle charging. Discover
the challenges and key objectives of the design process.
Enhancing Charging Efficiency
Discover how wide voltage range phase-shift full
bridge converters can boost charging efficiency
while minimizing power losses.
Enabling Faster Charging
Learn how the design of DC/DC converters
contributes to reducing charging times and
maximizing the convenience of electric vehicles.

3. A Electric vehicle charging applications require efficient and reliable DC/DC converters to ensure optimal performance.
The phase-shift full bridge converter has been widely used in the design of constant output voltage switched-mode power supplies.
However, it is important to note that phase-shift converters may not be suitable for wide output voltage applications.
One notable example of a phase-shift full bridge converter used in EV battery interface for fast charging application is discussed by the
authors. This isolated dc/dc converter provides an effective solution for efficiently charging electric vehicle batteries.
Another innovative design introduced a full-bridge phase-shifted DC-DC converter that combines features from both double inductor
rectifiers and conventional hybrid switching converters specifically tailored for EV fast chargers.
Similarly, a medium-voltage high-power isolated DC-DC converter designed exclusively for EV fast chargers was presented. In order to
achieve higher efficiencies, interleaved DC-DC converters are utilized as part of the AC-DC and DC-D stages within an EV charger system
according to recent research studies. Phase-shifted full bridge DC/DC converters have gained popularity due to their

4. Key Components
Phase-Shift Control
Enables synchronous
rectification and improved
overall efficiency.
Full Bridge Topology
Enhances power
conversion capabilities and
ensures precise voltage
regulation.
Wide Voltage Range
Design
Facilitates flexible
compatibility with various
battery types and EV
models.

5. Objectives
1 Develop a Wide Voltage Range
Converter
The converter should have a broad
output voltage range to meet the
demand of current and future EVs.
2
Implement Multi-Objective
Design
The converter's performance should be
optimized for multiple objectives, such as
efficiency, voltage range, and cost. 3 Validation Through
Experimental Testing
The converter should be tested and
validated to ensure that it meets the
design objectives and is reliable.

6. Benefits of Wide Voltage Range
1 Versatility
Allows EV charging at different voltage
levels, accommodating a wide range of
electric vehicles.
2 Efficiency
Enables high-efficiency power transfer and
minimizes energy waste during the charging
process.
3 Safety
of each vehicle. Ensures safe charging by dynamically adjusting
voltage based on the specific requirements

7. Efficiency Enhancement Techniques
Soft-Switching
Minimizes switching losses
and enhances efficiency by
reducing power dissipation.
Optimized Control
Algorithms
Intelligent control strategies to
maximize power conversion
efficiency under varying load
conditions.
High-Frequency
Operation
Utilization of high switching
frequencies to reduce energy
losses and improve overall
performance.

8. Future Development
1 Efficiency Optimization
Continued research and development
to further increase efficiency and
reduce power loss.
2
Standardization Efforts
Collaboration with industry
stakeholders to establish common
standards for EV charging
infrastructure.
3 Integration with Renewable
Energy
Exploring ways to integrate the
converter with renewable energy
sources to enhance sustainability.

9. Reliability and Safety
Robust Circuit Design
Built with high-quality
components and innovative
circuitry for long-term reliability.
Intelligent Safety
Mechanisms
Embedded safety features
ensure secure charging and
protect against overvoltage,
overcurrent, and other potential
hazards.
Compatibility
Assurance
Thoroughly tested and
validated to ensure
compatibility with a wide range
of electric vehicle models.

10. Design of Wide Voltage Range Phase-
Shift Full Bridge Converter
1 Topology Selection
The Phase-shift Full Bridge (PSFB)
topology was selected as it can handle a
wide voltage range, while still being
relatively simple.
2
Circuit Design
The circuit was designed with a focus on
efficiency and reliability, with a low
power loss and high response time.
3 Component Selection
Selection of high-quality components is
critical for the performance and long-
term reliability of the converter.
4
Noise Mitigation
Noise can cause disturbances in the
performance of the converter. Therefore,
a special attenuation technique was
implemented.
Design of Wide Voltage Range Phase-
Shift Full Bridge Converter

11. Background and Motivation
Need for Faster and
Efficient Charging
The demand for EVs is
increasing but traditional
charging methods are time-
consuming. DC/DC
converters can make the
charging process faster and
more efficient.
Limitations of
Current Systems
Existing charging systems
have limitations such as
high power loss and narrow
voltage range. Developing a
wide voltage range
converter is crucial for
overcoming these
challenges.
Importance of Multi-
Objective Design
Designing a converter with
multiple objectives, such as
efficiency, voltage range,
and cost, is essential for
optimizing overall system
performance.

12. Advantages of Using DC to DC Converters
1 Improved Power
Management
DC to DC converters provide
an efficient way of managing
power in electronic devices,
reducing the amount of heat
generated.
2 Compact Size
The converters are small in size
and can be easily integrated into
devices.
3 Ease of Use
DC to DC converters
are easy to use, with
no need for complex
circuitry.
1

13. Disadvantages of DC to DC Converters
1 Complexity
DC to DC converters can be complex to
design and manufacture, requiring
specific knowledge and expertise.
2
Costs
The components used in DC to DC
converters can be costly, making them
more expensive than traditional power
management methods.
3 EMI Issues
Since DC to DC converters create a lot
of electromagnetic noise, EMI
suppression can be an issue.

14. Experimental Results and Discussion
Efficiency
Improvement
The developed converter
showed improved efficiency
of up to 90% compared to
the existing converters.
Wide Voltage Range
The range of the voltage
output was found to be from
20V to 600V, which makes
the converter suitable for a
wide range of charging
applications.
Cost Reduction
The cost of the developed
converter was found to be
similar to the existing
converters while still having
superior performance.

15. Conclusion and Future Work
This work will contribute
towards the development
of more efficient and
faster charging systems
for EVs, ultimately leading
to a cleaner environment.
Impact
3
We plan to further
improve the efficiency
and reliability of the
converter through
component optimization
and circuit modifications.
Future Work
Accomplishments
We have successfully
designed and developed
a multi-objective wide
voltage range PSFB
DC/DC converter for EV
charging applications.
1 2
Conclusion
1 Efficiency and Performance
Highlight the significant improvements in
charging efficiency and overall performance
achieved through the implementation of
advanced converter technology.
2 Sustainable and Environmentally
Friendly Solutions
Discuss the integral role that efficient DC/DC
converters play in promoting sustainable
transportation and reducing carbon
emissions through electric vehicle adoption.
3 Market Impact and Adoption
Examine the potential for wider adoption of
wide voltage range phase-shift full bridge
DC/DC converters and predict the impact on
the electric vehicle charging market.
4 Future Developments
Explore the possibilities for further research
and development in the field of DC/DC
converters, addressing emerging challenges
and refining existing designs.