Bidirectional DC/DC converter for application in an electric vehicle for better battery management
(2020) In CODEN:LUTEDX/TEIE EIEL05 20201Industrial Electrical Engineering and Automation
- Abstract
- In each electric vehicle there is an energy storage part and a propulsion part to drive the vehicle in the desired direction. To make them compatible with each other and at the same time have a good efficiency, there is need for a system that transfers energy from the batteries to the motor. In electric drive systems this energy transfer is done with different converters and the converter that is studied in this thesis is one that sits between a battery pack and a common bus with a fixed voltage.
This thesis covers a proposed DC-DC converter topology as well as its components. The chosen topology will be explained in detail, how it works and its different stages of operation. The report contains investigations and argumentation to what... (More) - In each electric vehicle there is an energy storage part and a propulsion part to drive the vehicle in the desired direction. To make them compatible with each other and at the same time have a good efficiency, there is need for a system that transfers energy from the batteries to the motor. In electric drive systems this energy transfer is done with different converters and the converter that is studied in this thesis is one that sits between a battery pack and a common bus with a fixed voltage.
This thesis covers a proposed DC-DC converter topology as well as its components. The chosen topology will be explained in detail, how it works and its different stages of operation. The report contains investigations and argumentation to what components would be best suited for the proposed topology and why.
Important formulas and derivations concerning the converter is also shown and discussed in the report. The different power losses in the converter have been analysed and formulas for losses in each component is presented.
At the end of the result chapter, a test case is presented with values calculated using formulas from this report as well as a complete model of the topology created in LTspice.
This type of DC-DC converter is certainly possible to build but there are some concerns regarding how efficient it is. Since proposed converter have a wide range of battery voltage that it is compatible with, it is difficult to optimize components and reduce losses. (Less)
Please use this url to cite or link to this publication:
http://lup.lub.lu.se/student-papers/record/9024179
- author
- Järnfors, Erik LU and Johansson, Nils LU
- supervisor
-
- Mats Lilja LU
- Bengt Simonsson LU
- organization
- alternative title
- DC/DC omvandlare för applicering på elektriska fordon i syfte att förbättra batterihantering
- course
- EIEL05 20201
- year
- 2020
- type
- M2 - Bachelor Degree
- subject
- keywords
- Energy management, Electronics and Electrical technology, DC/DC converter, Vehicle electrification.
- publication/series
- CODEN:LUTEDX/TEIE
- report number
- 3090
- language
- English
- id
- 9024179
- date added to LUP
- 2025-02-05 17:05:59
- date last changed
- 2025-02-05 17:05:59
@misc{9024179,
abstract = {{In each electric vehicle there is an energy storage part and a propulsion part to drive the vehicle in the desired direction. To make them compatible with each other and at the same time have a good efficiency, there is need for a system that transfers energy from the batteries to the motor. In electric drive systems this energy transfer is done with different converters and the converter that is studied in this thesis is one that sits between a battery pack and a common bus with a fixed voltage.
This thesis covers a proposed DC-DC converter topology as well as its components. The chosen topology will be explained in detail, how it works and its different stages of operation. The report contains investigations and argumentation to what components would be best suited for the proposed topology and why.
Important formulas and derivations concerning the converter is also shown and discussed in the report. The different power losses in the converter have been analysed and formulas for losses in each component is presented.
At the end of the result chapter, a test case is presented with values calculated using formulas from this report as well as a complete model of the topology created in LTspice.
This type of DC-DC converter is certainly possible to build but there are some concerns regarding how efficient it is. Since proposed converter have a wide range of battery voltage that it is compatible with, it is difficult to optimize components and reduce losses.}},
author = {{Järnfors, Erik and Johansson, Nils}},
language = {{eng}},
note = {{Student Paper}},
series = {{CODEN:LUTEDX/TEIE}},
title = {{Bidirectional DC/DC converter for application in an electric vehicle for better battery management}},
year = {{2020}},
}