Working principle analysis and control algorithm for bidirectional DC/DC converter
Abstract
A bidirectional DC/DC converter is an important part of the DC micro grid system, playing a key role in the stable operationof the system and the coordinated distribution of power. To solve the problem of unstable busbar voltage when the energytransforms bidirectionally in the DC micro grid system, a control algorithm based on closed-loop proportion integral derivativewas proposed in this study. The hardware cinarcuit of the bidirectiol DC/DC converter was designed in the DC micro gridenergy storage system, and the characteristics of converter efficiency in charging mode and constant voltage output werestudied by small-signal modeling of the bidirectional DC/DC converter in charging and discharging systems. Experimentaldata were used to prove the correctness of the theoretical analysis. The results demonstrate that the current-controlledprecision changes steadily in the charging mode when the output voltage is constant and the charging current is adjustablein ranges between 1 A and 2 A. When the charging current is 2 A and the output voltage ranges from 24 V to 36 V, thechange rate of the charging current undergoes stable changes. In the discharge mode, when the output voltage is stable,the converter conversion rate changes steadily. When the output voltage changes in the range between 32 V and 38 V, thebidirectional DC/DC circuit automatically switches over the work patterns and maintains the stability of the output voltage.This study achieves bidirectional transmission of energy by rational hardware design of a bidirectional DC/DC converter andimproves the reliability of the DC micro grid energy storage system. The proposed method provides a good prospect ofa control scheme for the bidirectional DC/DC converter to optimize practical engineering design.References
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power users, Journal of Electric Power Systems and Automation 20 (6)
(2008) 102–106.
[2] R. Shao, J. Han, Zhengwei nad Lin, Power quality index analysis, Journal
of Power System and Its Automation 19 (3) (2007) 118–121.
[3] Y. Liu, C. Huang, L. Ou, et al., Three-phase unbalanced voltage sag
detection method based on dq transform, Journal of Power System
and Automation 19 (3) (2007) 72–76.
[4] Y. Zhou, W. Luo, Design and simulation of bidirectional DC/DC converter
topology, Automation Expo 10 (2012) 102–105.
[5] X. Liang, Simulation and design of dc/dc converter control, Ph.D. thesis,
Qingdao University of Science and Technology, Qingdao (2016).
[6] D. M. Xu, X. Wu, J. Zhang, Z. Qian, High power high frequency halfwave-
mode ZCT-PWM full bridge DC/DC converter, in: Applied Power
Electronics Conference and Exposition, 2000. APEC 2000. Fifteenth
Annual IEEE, Vol. 1, IEEE, 2000, pp. 99–103.
[7] K. Ramya, V. Jegathesan, Comparison of pi and pid controlled bidirectional
dc-dc converter systems, International Journal of Power Electronics
and Drive Systems 7 (1) (2016) 56.
[8] N. Jabbour, C. Mademlis, I. Kioskeridis, Improved performance in a
supercapacitor-based energy storage control system with bidirectional
dc-dc converter for elevator motor drives, in: International Conference
on Power Electronics, Machines and Drives (PEMD’14), IET, Manchester,
UK, 2014.
[9] G. Borocci, F. G. Capponi, G. De Donato, F. Caricchi, Closed-loop fluxweakening
control of hybrid-excitation synchronous machine drives,
IEEE Transactions on Industry Applications 53 (2) (2017) 1116–1126.
[10] Z. Yu, L. Nie, H. Lv, et al., A review of DC access technology for electric
vehicle charging station, Journal of Electrical and Mechanical Engineering
32 (2) (2015) 279–284.
[11] D. Jiang, F. Liu, R. Mao, X. Yuan, Buck-boost integrated three-port
DC-DC converter with coupling inductor, Automation of Electric Power
System 38 (3) (2014) 7–13.
[12] Y. Cai, C.Wang, Y.Wang, Study on dab lcc resonant bidirectional dc/dc
converter, Journal of Coal Engineering 47 (2) (2015) 92–94.
[13] P. Lin, Bidirectional DC/DC converter designing based on microcomputer,
Computer Knowledge and Technology 13 (13) (2017) 210–211.
[14] X. Wei, D. Dai, New type bi-directional DC/DC converter PID control
based on arranging transient process, Journal of Electric Power Science
and Engineering 33 (8) (2017) 6–12.
[15] L. Zhao, J. Li, W. Fan, Y. Zhang, X. Zhang, Design of bidirectional
DC/DC converter based on STC89C51, Journal of Electrical Design
5A (2017) 56–57.
[16] F. Z. Peng, H. Li, G.-J. Su, J. S. Lawler, A new ZVS bidirectional DCDC
converter for fuel cell and battery application, IEEE Transactions
on power electronics 19 (1) (2004) 54–65.
[17] C. Shi, X. Tang, N. Li, G. Sun, Y. Sun, Dc conversion technology based
on full bridge isolation bidirectional converter, Journal of Electrotechnical
Society 31 (2) (2016) 121–127.
[18] Y. Tong, G. Wu, X. Jin, et al., Topological study of bidirectional dc/dc
converters, Proceeding of the CSEE 27 (13) (2017) 81–86.
[19] 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) (2016) 7944–7955.
[20] G. Waltrich, M. A. Hendrix, J. L. Duarte, Three-phase bidirectional
dc/dc converter with six inverter legs in parallel for ev applications,
IEEE Transactions on Industrial Electronics 63 (3) (2016) 1372–1384.
[21] K. Lang,W. Lin, Y. Xu, Current status of two-way dc/dc converter circuit
topology, in: China Electrotechnical Society of Electric Power Society
Academic Conference, China, Beijing, 2008, pp. 1–5.
[22] Y. Zhang, Y. Gao, J. Li, M. Sumner, Interleaved switched-capacitor
bidirectional DC-DC converter with wide voltage-gain range for energy
storage systems, IEEE Transactions on Power Electronics 99 (2017)
1–16.
[23] L. Huang, X. Dong, C. Xie, S. Quan, Y. Gao, Research and modeling
of the bidirectional half-bridge current-doubler DC/DC converter, International
Journal of Rotating Machinery 2017.
[24] R. Anand, P. M. Mary, Improved dynamic response of dc to dc converter
using hybrid pso tuned fuzzy sliding mode controller, Circuits
and Systems 7 (06) (2016) 946–955.
[25] R. S. Balog, P. T. Krein, Bus selection in multibus dc microgrids, IEEE
Transactions on Power Electronics 26 (3) (2011) 860–867.
[26] G. Lu, L. Zhang, Y. Bu, Y. Zhou, Study on front-end bidirectional dc/dc
converter of photovoltaic grid-connected inverter, International Journal
of Mechatronics and Applied Mechanics 1 (2017) 45–52.
[27] F. Zhang, Two-way DC/DC converter, Master’s thesis, Nanjing University
of Aeronautics and Astronautics, Nanjing (2005).
[28] F. Zhang, C. Zhu, Y. Yan, Control model of bidirectional DC/DC converter,
Proceeding of the CSEE 25 (11) (2015) 46–49.
Published
2018-01-23
How to Cite
LI, B.Y. et al.
Working principle analysis and control algorithm for bidirectional DC/DC converter.
Journal of Power Technologies, [S.l.], v. 97, n. 4, p. 327–335, jan. 2018.
ISSN 2083-4195.
Available at: <https://papers.itc.pw.edu.pl/index.php/JPT/article/view/1214>. Date accessed: 27 dec. 2024.
Issue
Section
Energy Engineering and Technology
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