Study of a Bidirectional Power Converter Integrated with Battery/Ultracapacitor Dual-Energy Storage
A patented bidirectional power converter was studied as an interface to connect the DC-bus of driving inverter, battery energy storage (BES), and ultracapacitor (UC) to solve the problem that the driving motor damages the battery life during acceleration and deceleration in electric vehicles (EVs)....
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-03-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/13/5/1234 |
| _version_ | 1798026930305368064 |
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| author | Ching-Ming Lai Jiashen Teh Yuan-Chih Lin Yitao Liu |
| author_facet | Ching-Ming Lai Jiashen Teh Yuan-Chih Lin Yitao Liu |
| author_sort | Ching-Ming Lai |
| collection | DOAJ |
| description | A patented bidirectional power converter was studied as an interface to connect the DC-bus of driving inverter, battery energy storage (BES), and ultracapacitor (UC) to solve the problem that the driving motor damages the battery life during acceleration and deceleration in electric vehicles (EVs). The proposed concept was to adopt a multiport switch to control the power flow and achieve the different operating mode transitions for the better utilization of energy. In addition, in order to improve the conversion efficiency, the proposed converter used a coupled inductor and interleaved-pulse-width-modulation (IPWM) control to achieve a high voltage conversion ratio (i.e., bidirectional high step-up/down conversion characteristics). This study discussed the steady-state operation and characteristic analysis of the proposed converter. Finally, a 500 W power converter prototype with specifications of 72 V DC-bus, 24 V BES, and 48 V UC was built, and the feasibility was verified by simulation and experiment results. The highest efficiency points of the realized prototype were 97.4%, 95.5%, 97.2%, 97.1%, and 95.3% for the UC charge, battery charge, UC discharge, the dual-energy in series discharge, and battery discharge modes, respectively. |
| first_indexed | 2024-04-11T18:43:03Z |
| format | Article |
| id | doaj.art-85e3faeb3dab497eac9cb4783b1bdaad |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-11T18:43:03Z |
| publishDate | 2020-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-85e3faeb3dab497eac9cb4783b1bdaad2022-12-22T04:08:55ZengMDPI AGEnergies1996-10732020-03-01135123410.3390/en13051234en13051234Study of a Bidirectional Power Converter Integrated with Battery/Ultracapacitor Dual-Energy StorageChing-Ming Lai0Jiashen Teh1Yuan-Chih Lin2Yitao Liu3Department of Electrical Engineering, National Chung Hsing University, Taichung 420, TaiwanSchool of Electrical and Electronic Engineering, Engineering Campus, Universiti Sains Malaysia (USM), Nibong Tebal 14300, Penang, MalaysiaDepartment of Electrical Engineering, National Taiwan University, Taipei 106, TaiwanCollege of Mechatronics and Control Engineering, Shenzhen University, Shenzhen 518060, ChinaA patented bidirectional power converter was studied as an interface to connect the DC-bus of driving inverter, battery energy storage (BES), and ultracapacitor (UC) to solve the problem that the driving motor damages the battery life during acceleration and deceleration in electric vehicles (EVs). The proposed concept was to adopt a multiport switch to control the power flow and achieve the different operating mode transitions for the better utilization of energy. In addition, in order to improve the conversion efficiency, the proposed converter used a coupled inductor and interleaved-pulse-width-modulation (IPWM) control to achieve a high voltage conversion ratio (i.e., bidirectional high step-up/down conversion characteristics). This study discussed the steady-state operation and characteristic analysis of the proposed converter. Finally, a 500 W power converter prototype with specifications of 72 V DC-bus, 24 V BES, and 48 V UC was built, and the feasibility was verified by simulation and experiment results. The highest efficiency points of the realized prototype were 97.4%, 95.5%, 97.2%, 97.1%, and 95.3% for the UC charge, battery charge, UC discharge, the dual-energy in series discharge, and battery discharge modes, respectively.https://www.mdpi.com/1996-1073/13/5/1234battery/ultracapacitordual-energybidirectional power converterelectric vehicles |
| spellingShingle | Ching-Ming Lai Jiashen Teh Yuan-Chih Lin Yitao Liu Study of a Bidirectional Power Converter Integrated with Battery/Ultracapacitor Dual-Energy Storage Energies battery/ultracapacitor dual-energy bidirectional power converter electric vehicles |
| title | Study of a Bidirectional Power Converter Integrated with Battery/Ultracapacitor Dual-Energy Storage |
| title_full | Study of a Bidirectional Power Converter Integrated with Battery/Ultracapacitor Dual-Energy Storage |
| title_fullStr | Study of a Bidirectional Power Converter Integrated with Battery/Ultracapacitor Dual-Energy Storage |
| title_full_unstemmed | Study of a Bidirectional Power Converter Integrated with Battery/Ultracapacitor Dual-Energy Storage |
| title_short | Study of a Bidirectional Power Converter Integrated with Battery/Ultracapacitor Dual-Energy Storage |
| title_sort | study of a bidirectional power converter integrated with battery ultracapacitor dual energy storage |
| topic | battery/ultracapacitor dual-energy bidirectional power converter electric vehicles |
| url | https://www.mdpi.com/1996-1073/13/5/1234 |
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