Journal of Power Electronics

  • 제21권12호
  • /
  • Pages.1780-1792
  • /
  • 2021
  • /
  • 1598-2092(pISSN)
  • /
  • 2093-4718(eISSN)
전력전자학회 (The Korean Institute of Power Electronics)
권호 표지
DOI QR코드

DOI QR Code

Optimal modulation strategy based on fundamental reactive power for dual-active-bridge converters

  • Zhu, Zhichao (National Key Laboratory of Science and Technology on Vessel Integrated Power System, Naval University of Engineering) ;
  • Xiao, Fei (National Key Laboratory of Science and Technology on Vessel Integrated Power System, Naval University of Engineering) ;
  • Liu, Jilong (National Key Laboratory of Science and Technology on Vessel Integrated Power System, Naval University of Engineering) ;
  • Chen, Peng (School of Electrical Engineering, Southeast University) ;
  • Huang, Zhaojie (National Key Laboratory of Science and Technology on Vessel Integrated Power System, Naval University of Engineering) ;
  • Ren, Qiang (National Key Laboratory of Science and Technology on Vessel Integrated Power System, Naval University of Engineering)
  • 투고 : 2021.06.08
  • 심사 : 2021.09.27
  • 발행 : 2021.12.20
⟨ 이전 논문 다음 논문 ⟩

초록

Dual-active-bridge (DAB) converters are widely used in bidirectional power transmission and voltage conversion. At present, phase-shift (PS) control is one of the most common and mature control methods for DAB converters. To improve the efficiency and performance of DAB converters, the soft switching and current stress are optimized by increasing the inner phase-shift ratio. However, under different PS controls, it is difficult to establish a unified mathematical model using the traditional instantaneous integral method. To solve this problem, based on the approximate equivalence of the fundamental component of a high-frequency link decomposed by Fourier series, an optimal fundamental modulation strategy is proposed, which takes the fundamental reactive power as the objective of optimization. The trajectories for each of the electrical parameters are analyzed intuitively through a vector diagram of the phasor. A practical optimal control strategy scheme for engineering is obtained. Finally, the effectiveness of the theoretical analysis and the proposed method are verified by experimental results.

키워드

과제정보

This work was supported by the National Natural Science Foundation of China under Grant (51807200).

참고문헌

  1. Zhao, B., Song, Q., Liu, W.: Efficiency characterization and optimization of isolated bidirectional DC-DC converter based on dual-phase-shift Control for DC distribution application. IEEE Trans. Power Electron. 28(04), 1711-1727 (2013) https://doi.org/10.1109/TPEL.2012.2210563
  2. Zhao, B., Yu, Q., Sun, W.: Extended-phase-shift control of isolated bidirectional DC-DC converter for power distribution in microgrid. IEEE Trans. Power Electron. 27(11), 4667-4680 (2012) https://doi.org/10.1109/TPEL.2011.2180928
  3. Krismer, F., Kolar, J.W.: Efficiency-optimized high-current dual active bridge converter for automotive applications. IEEE Trans. Ind. Electron. 59(07), 2745-2760 (2012) https://doi.org/10.1109/TIE.2011.2112312
  4. Xue, F., Yu, R., Huang, A.Q.: A 98.3% efficient GaN isolated bidirectional DC-DC converter for DC microgrid energy storage system applications. IEEE Trans. Ind. Electron. 64(11), 9094-9103 (2017) https://doi.org/10.1109/TIE.2017.2686307
  5. Chen, L., Tarisciotti, L., Costabeber, A., Guan, Q., Wheeler, P., Zanchetta, P.: Phase-shift modulation for a current-fed isolated DC-DC converter in more electric aircrafts. IEEE Trans. Power Electron. 34(09), 8528-8543 (2019) https://doi.org/10.1109/TPEL.2018.2889861
  6. Sun, Z., Xiao, L., Wang, Q.: Review research on control technology of output parallel dual-active-bridge-converters. Proc. CSEE. 41(05), 1811-1831 (2021)
  7. Wang, Y., Song, Q., Sun, Q., Zhao, B., Li, J., Liu, W.: Multilevel MVDC link strategy of high-frequency-link DC transformer based on switched capacitor for MVDC power distribution. IEEE Trans. Industr. Electron. 64(04), 2829-2835 (2017) https://doi.org/10.1109/TIE.2016.2643622
  8. Sun, Q., Li, Y., Liu, G., Wang, Y., Meng, J., Mu, Q.: Multiple-modular high-frequency DC transformer with parallel clamping switched capacitor for flexible MVDC and HVDC system applications. IEEE J. Emerg. Sel. Top. Power Electron. 8(4), 4130-4143 (2020) https://doi.org/10.1109/jestpe.2019.2954039
  9. Li, J., Zhao, B., Song, Q., Huang, Y., Sun, Q., Wang, Y., Liu, W.: DC solid state transformer based on multilevel DC link for medium-voltage DC distribution application. Proc. CSEE. 36(14), 3717-3725 (2016)
  10. Tong, A., Hang, L., Li, G., Jiang, X., Gao, S.: Modeling and analysis of a dual-active-bridge-isolated bidirectional DC/DC converter to minimize RMS current with whole operating range. IEEE Trans. Power Electron. 33(06), 5302-5316 (2018) https://doi.org/10.1109/TPEL.2017.2692276
  11. Sha, D., Zhang, J., Liu, K.: Leakage inductor current peak optimization for dual-transformer current-fed dual active bridge DC-DC converter with wide input and output voltage range. IEEE Trans. Power Electron. 35(06), 6012-6024 (2020) https://doi.org/10.1109/TPEL.2019.2952650
  12. Bai, H., Mi, C.: Eliminate reactive power and increase system efficiency of isolated bidirectional dual-active-bridge DC-DC converters using novel dual-phase-shift control. IEEE Trans. Power Electron. 23(06), 2905-2914 (2008) https://doi.org/10.1109/TPEL.2008.2005103
  13. An, F., Song, W., Yang, K.: Multi-objective optimization control scheme based on extended phase-shift of dual-active-bridge DC-DC converters. Proc. CSEE. 39(03), 822-831 (2019)
  14. Zhao, B., Song, Q., Liu, W., Sun, W.: Current-stress-optimized switching strategy of isolated bidirectional DC-DC converter with dual-phase-shift control. IEEE Trans. Ind. Electron. 60(10), 4458-4467 (2013) https://doi.org/10.1109/TIE.2012.2210374
  15. Ren, Q., Ai, S.: A three degree freedom optimal control strategy of dual-active-bridge converters for full range operations. Proc. CSEE. 40(11), 3613-3621 (2020)
  16. Segaran, D., Holmes, D.G., McGrath, B.P.: Enhanced load step response for a bidirectional DC-DC converter. IEEE Trans. Power Electron. 28(01), 371-379 (2013) https://doi.org/10.1109/TPEL.2012.2200505
  17. Sha, G., Wang, C., Cheng, H., Deng, J., Wang, J.: Unified phasor analytical method for bi-directional dual-active-bridge DC-DC converter under phase-shift control. Trans. China Electrotech. Soc. 32(18), 176-185 (2017)
  18. Cheng, H., Ma, Z., Wang, C., Sha, G.: Analysis of the RMS current of dual active bridge DC-DC converters based on fourier series modeling. Electr. Power Autom. Equip. 37(05), 14-20 (2017)
  19. Zhao, B., Song, Q., Liu, W., Liu, G., Zhao, Y.: Universal high-frequency-link characterization and practical fundamental-optimal strategy for dual-active-bridge DC-DC converter under PWM plus phase-shift control. IEEE Trans. Power Electron. 30(12), 6488-6494 (2015) https://doi.org/10.1109/TPEL.2015.2430934
  20. Choi, W., Rho, K., Cho, B.: Fundamental duty modulation of dual-active-bridge converter for wide-range operation. IEEE Trans. Power Electron. 31(06), 4048-4064 (2016) https://doi.org/10.1109/TPEL.2015.2474135
  21. Li, J., Luo, Q., Mou, D., Wei, Y., Sun, P., Du, X.: A hybrid five-variable modulation scheme for dual active bridge converter with minimal RMS current. IEEE Trans. Ind. Electron. 69(01), 336-346 (2022) https://doi.org/10.1109/TIE.2020.3048278