Document Type : Original Research Paper

Authors

Department of Electrical Engineering, K.N.Toosi University of Technology, Tehran, Iran

Abstract

Background and Objectives: Power electronics infrastructures play an important role in charging different types of electric vehicles (EVs) especially Plug-in Hybrid EVs (PHEVs). Designing appropriate power converters is the topic of various studies.
Method: In this paper, a novel bidirectional buck-boost multifunctional integrated converter is presented which is capable of handling battery and fuel cell stack in plug-in hybrid electric vehicles.  The proposed converter has the ability to work in five different operating modes (Charging/Propulsion (only battery)/ Propulsion (battery and FC)/ Regenerative braking/ V2G). The introduced multifunctional two-stage converter has the ability to work in all the above-mentioned modes in buck- boost condition, the feature that does not exist in the previous works. It is possible to control active and reactive power by using the effective dual-loop PI control method which is introduced in this paper. Working as an on-board charger and DC-DC converter (which interfaced between power sources and motor drive system) causes a decrease in the counts of the total components and an increase in system efficiency.
Results: Operation principle and steady-state analysis of each stage of the proposed converter in all operating modes are provided in detail and in order to design an appropriate applicable converter, the design considerations and procedure are also explained for capacitive and inductive components. The proposed converter is simulated in MATLAB/SIMULAIN environment and results are provided. Voltage and current waveforms in all operating conditions are provided with their transient. FFT analysis of the input current (in the operating modes in which the converter absorb or deliver power from/to the grid) is also mentioned. A reduced-scale setup of the presented converter is built and tested and experimental results confirm simulation ones.
Conclusion: A bidirectional buck-boost integrated converter in PHEVs applications is introduced in this paper. The design procedure of the presented converter is provided and also an effective control method to control active and reactive power during charging and V2G modes is introduced. A comparison study of the proposed converter with other similar converters introduced in recent years in terms of the number of high-frequency switches in each mode is also done. Simulation and experimental results are also provided.


======================================================================================================
Copyrights
©2020 The author(s). This is an open access article distributed under the terms of the Creative Commons Attribution (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, as long as the original authors and source are cited. No permission is required from the authors or the publishers.
======================================================================================================

Keywords

Main Subjects

[1] A. Khaligh, M. D'Antonio, "Global trends in high-power on-board chargers for electric vehicles," IEEE Transactions on Vehicular Technology, 68(4): 3306-3324, 2019.

[2] H. V. Nguyen, D.-D. To, D.-C. Lee, "Onboard battery chargers for plug-in electric vehicles with dual functional circuit for low-voltage battery charging and active power decoupling," IEEE Access, 6: 70212-70222, 2018.

[3] S. M. Lukic, A. Emadi, "Charging ahead," IEEE Industrial Electronics Magazine, 2(4): 22-31, 2008.

[4] C. C. Chan, "The state of the art of electric, hybrid, and fuel cell vehicles," in Proceedings of the IEEE, 95(4): 704-718, 2007.

[5] I. Aharon, A. Kuperman, "Topological overview of powertrains for battery-powered vehicles with range extenders," IEEE Transactions on Power Electronics, 26(3): 868-876, 2011.

[6] W. Qian, H. Cha, F. Z. Peng, L. M. Tolbert, "55-kW variable 3X DC-DC converter for plug-in hybrid electric vehicles," IEEE Transactions on Power Electronics, 27(4): 1668-1678, 2011.

[7] T. Park, T. Kim, "Novel energy conversion system based on a multimode single-leg power converter," IEEE transactions on power electronics, 28(1): 213-220, 2012.

[8] H. Bai, Y. Zhang, C. Semanson, C. Luo, C. Mi, "Modelling, design and optimisation of a battery charger for plug-in hybrid electric vehicles," IET electrical systems in transportation, 1(1): 3-10, 2011.

[9] J.-S. Kim, G.-Y. Choe, H.-M. Jung, B.-K. Lee, Y.-J. Cho, K.-B. Han, "Design and implementation of a high-efficiency on-board battery charger for electric vehicles with frequency control strategy," in IEEE Vehicle Power and Propulsion Conference,:1-6, 2010.

[10] N. Elsayad, H. Moradisizkoohi, O. A. Mohammed, "A New Hybrid Structure of a Bidirectional DC-DC Converter With High Conversion Ratios for Electric Vehicles," IEEE Transactions on Vehicular Technology, 69(1): 194-206, 2019.

[11] Y. Zhang, Y. Gao, L. Zhou, M. Sumner, "A switched-capacitor bidirectional DC–DC converter with wide voltage gain range for electric vehicles with hybrid energy sources," IEEE Transactions on Power Electronics, 33(11): 9459-9469, 2018.

[12] R. R. Ahrabi, H. Ardi, M. Elmi, A. Ajami, "A novel step-up multiinput DC–DC converter for hybrid electric vehicles application," IEEE Transactions on Power Electronics, 32(5): 3549-3561, 2016.

[13] H. Moradisizkoohi, N. Elsayad, O. A. Mohammed, "Experimental Verification of a Double-Input Soft-Switched DC–DC Converter for Fuel Cell Electric Vehicle With Hybrid Energy Storage System," IEEE Transactions on Industry Applications, 55(6): 6451-6465, 2019.

[14] F. Akar, Y. Tavlasoglu, E. Ugur, B. Vural, I. Aksoy, "A bidirectional nonisolated multi-input DC–DC converter for hybrid energy storage systems in electric vehicles," IEEE Transactions on Vehicular Technology, 65(10): 7944-7955, 2015.

[15] C.-M. Lai, Y.-H. Cheng, M.-H. Hsieh, Y.-C. Lin, "Development of a bidirectional DC/DC converter with dual-battery energy storage for hybrid electric vehicle system," IEEE Transactions on Vehicular Technology, 67(2): 1036-1052, 2017.

[16] S. Dusmez, A. Khaligh, "A compact and integrated multifunctional power electronic interface for plug-in electric vehicles," IEEE Transactions on Power Electronics, 28(12): 5690-5701, 2012.

[17] S. Dusmez, A. Khaligh, "A charge-nonlinear-carrier-controlled reduced-part single-stage integrated power electronics interface for automotive applications," IEEE transactions on Vehicular Technology, 63(3): 1091-1103, 2013.

[18] Y. Tang, D. Zhu, C. Jin, P. Wang, F. Blaabjerg, "A three-level quasi-two-stage single-phase PFC converter with flexible output voltage and improved conversion efficiency," IEEE Transactions on Power Electronics, 30(2): 717-726, 2014.

[19] A. K. Singh, M. K. Pathak, "Single-stage ZETA-SEPIC-based multifunctional integrated converter for plug-in electric vehicles," IET Electrical Systems in Transportation, 8(2): 101-111, 2017.

[20] S. Liu, X. Xie, L. Yang, "Analysis, Modeling and Implementation of a Switching Bi-Directional Buck-Boost Converter Based on Electric Vehicle Hybrid Energy Storage for V2G System," IEEE Access, 8: 65868-65879, 2020.

[21] H. S. Gohari, K. Abbaszadeh, "A Novel Controllable Bidirectional switching-capacitor based Buck-Boost Charger for EVs," in 2020 11th Power Electronics, Drive Systems, and Technologies Conference (PEDSTC),:1-6, 2020.

[22] V. Bist, B. Singh, "PFC Cuk converter-fed BLDC motor drive," IEEE Transactions on Power Electronics, 30(2): 871-887, 2014.

[23] V. Vlatkovic, D. Borojevic, F. C. Lee, "Input filter design for power factor correction circuits," IEEE Transactions on Power Electronics, 11(1): 199-205, 1996.

[24] H. Akagi, Y. Kanazawa, A. Nabae, "Instantaneous reactive power compensators comprising switching devices without energy storage components," IEEE Transactions on industry applications(3): 625-630, 1984.


LETTERS TO EDITOR

Journal of Electrical and Computer Engineering Innovations (JECEI) welcomes letters to the editor for the post-publication discussions and corrections which allows debate post publication on its site, through the Letters to Editor. Letters pertaining to manuscript published in JECEI should be sent to the editorial office of JECEI within three months of either online publication or before printed publication, except for critiques of original research. Following points are to be considering before sending the letters (comments) to the editor.


[1] Letters that include statements of statistics, facts, research, or theories should include appropriate references, although more than three are discouraged.

[2] Letters that are personal attacks on an author rather than thoughtful criticism of the author’s ideas will not be considered for publication.

[3] Letters can be no more than 300 words in length.

[4] Letter writers should include a statement at the beginning of the letter stating that it is being submitted either for publication or not.

[5] Anonymous letters will not be considered.

[6] Letter writers must include their city and state of residence or work.

[7] Letters will be edited for clarity and length.

CAPTCHA Image