A T-type LLC Resonant DC-DC-AC Three Port Converter
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Keywords:
Three-port converters (TPC), Photovoltaic (PV), Control degrees of freedom (CDF), Dual active Bridge (DAB), Inductor-inductor-capacitor (LLC)Abstract
Three-port converters (TPC) have become a popular study issue over the past few years due to
their potential uses in from renewable sources and battery backup with great power efficiency. This article
proposes a bi-directional three-port T-type LLC resonant DC-DC-AC converter to perform soft switching
on light loads and in a wide voltage ratio range, to reduce reactive circulating current. This research analyzes
the Grid-Connected Photovoltaic (PV) system and battery backup system with the use of a Three-port DC
DC-AC converter (TPC). The purpose of this research is to propose a high-efficiency isolated DC-DC-AC
three-port converter (TPC) for home photovoltaic battery systems. The TPC is developed from a DC-AC
DAB converter. Its DC-side shares the full-bridge design that offers two bi-directional dc ports, but its AC
side permits direct AC-load connection through a T-type half-bridge arrangement. The suggested TPC
enables single-stage power conversion and a significant amount of control degrees of freedom (CDF) while
having a smaller number of components due to shared branch design and T-type architecture. The TPC can
retain high efficiency. The MATLAB/SIMULINK simulation validates the effectiveness of the proposed
topology.
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References
Z. Qian, O. Abdel-Rahman, H. Hu and I. Batarseh, “An integrated threeport inverter for stand-alone PV applications,” in Proc. IEEE Energy Convers. Congr. Expo., Atlanta, GA, USA, 2010, pp. 1471-1478.
J. Zeng, W. Qiao, C. Wei and L. Qu, “A soft-switched three-port singlestage inverter for photovoltaic-battery systems,” in Proc. IEEE Energy Convers. Congr. Expo., Montreal, QC, Canada, 2015, pp. 4568-4573.
M. Hadi Zare, M. Mohamadian and R. Beiranvand, “A single-phase gridconnected photovoltaic inverter based on a three-switch three-port flyback with series power decoupling circuit,” IEEE Trans. Ind. Electron., vol. 64, no. 3, pp. 2062-2071, March 2017.
J. Andrade, D. S. y Rosas, D. Frey and J. -P. Ferrieux, “Modified triple active bridge DC/AC three-phase converter with a series-resonant LC circuit on the AC-side,” in Proc. IEEE South. Power Electron. Conf., Puerto Varas, Chile, 2017, pp. 1-6.
J. U. Ugwuanyi, Y. P. Chan, K. H. Loo and Y. M. Lai, “Three-port ac-dc bidirectional converter with V2G reactive power support,” in Proc. IEEE Power Energy Conf. Illinois, Champaign, IL, USA, 2017, pp. 1-7.
A. K. Bhattacharjee and I. Batarseh, “Sinusoidally modulated ac-link microinverter based on dual-active-bridge topology,” IEEE Trans. Ind. Appl., vol. 56, no. 1, pp. 422-435, Jan.-Feb. 2020.
Y. Shi, R. Li, Y. Xue and H. Li, “Optimized operation of current-fed dual active bridge dc–dc converter for PV applications,” IEEE Trans. Ind. Electron., vol. 62, no. 11, pp. 6986-6995, Nov. 2015.
G. -R. Chen, H. -L. Jou, Kuen-Der Wu and J. -C. Wu, “Single-phase threewire fuel-cell generation system for micro-grid,” in Proc. IEEE Conf. Ind. Electron. Appl., Hangzhou, China, 2014, pp. 610-615.
A. K. Bhattacharjee and I. Batarseh, “An interleaved boost and dual active bridge-based single-stage three-port dc–dc–ac converter with sine PWM modulation,” IEEE Trans. Ind. Electron., vol. 68, no. 6, pp. 4790-4800, June 2021.
S. Kurm and V. Agarwal, “Dual active bridge based reduced stage multiport dc/ac converter for PV-battery systems,” IEEE Trans. Ind. Appl., vol. 58, no. 2, pp. 2341-2351, March-April 2022.
B. Zhao, Q. Song, W. Liu and Y. Sun, “Overview of dual-active-bridge isolated bidirectional dc–dc converter for high-frequency-link powerconversion system,” IEEE Trans. Power Electron., vol. 29, no. 8, pp. 4091-4106, Aug. 2014.
X. Sun, Y. Shen, Y. Zhu and X. Guo, “Interleaved boost-integrated LLC resonant converter with fixed-frequency PWM control for renewable energy generation applications,” IEEE Trans. Power Electron., vol. 30, no. 8, pp. 4312-4326, Aug. 2015.
H. Wu, J. Zhang, X. Qin, T. Mu and Y. Xing, “Secondary-side-regulated soft-switching full-bridge three-port converter based on bridgeless boost rectifier and bidirectional converter for multiple energy interface,” IEEE Trans. Power Electron., vol. 30, vol. 31, no. 7, pp. 4847-4860, July 2016.
Y. Shi, R. Li, Y. Xue and H. Li, “Optimized operation of current-fed dual active bridge dc–dc converter for PV applications,” IEEE Trans. Ind. Electron., vol. 62, no. 11, pp. 6986-6995, Nov. 2015.
