Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
권호 표지
DOI QR코드

DOI QR Code

CAN bus based current sharing control of high-power switching converters

  • Ye, Qiujin (School of Mechanical and Automotive Engineering, South China University of Technology) ;
  • Zeng, Min (School of Mechanical and Automotive Engineering, South China University of Technology) ;
  • Zhang, Yingxian (School of Mechanical and Automotive Engineering, South China University of Technology) ;
  • Wu, Kaiyuan (School of Mechanical and Automotive Engineering, South China University of Technology)
  • Received : 2020.06.26
  • Accepted : 2020.12.07
  • Published : 2021.03.20
⟨ Previous Next ⟩

Abstract

A digital current sharing control method leveraging a CAN bus is developed to inhibit the fluctuating current distributions of parallel converters in high-output oxidation power systems. When compared to conventional current sharing strategies, the proposed design significantly reduces circuit complexity without resorting to an analog current sharing bus, and is extremely robust in maintaining system functionality against one or multiple module failures. The digital control design also features anti-interference among high-power switching converters. In addition to detailing the operation principles and mathematical deductions of the state-space average model, the design of a current sharing controller and a current sharing scheme based on a CAN bus are presented to analyze the steady-state operation of parallel converters and dynamic-state operation. Based on these observations, a proof-of-concept prototype was developed that offers a maximum output power of nearly 400 kW with a current sharing error (CSE) below 2.1%. In addition, this system features outstanding anti-interference capability in intense electromagnetic fields.

Keywords

Acknowledgement

This work was supported by the National Key Research and Development Program of China (2018YFD0400903) and Light Alloy Processing Science and Technology National Defense Key Discipline Laboratory Open Fund (EG201780504).

References

  1. Zhang, W., Liu, W., Zang, C., Liu, L.: Multiagent system-based integrated solution for topology identification and state estimation. IEEE Trans. Ind. Inf. 13(2), 714-724 (2017) https://doi.org/10.1109/TII.2016.2543200
  2. Chen, W., Wang, G.: Decentralized voltage-sharing control strategy for fully modular input-series-output-series system with improved voltage regulation. IEEE Trans. Ind. Electron. 62(5), 2777-2787 (2015) https://doi.org/10.1109/TIE.2014.2365433
  3. Jiang, C., Du, H., Wen, G.: Current sharing control for parallel DC-DC buck converters based on consensus theory. In: Proceedings of the 13th IEEE International Conference on Control and Automations, pp. 536-540, 2017.
  4. Rabkowski, J., Peftitsis, D., Nee, H.P.: Parallel-operation of discrete SiC BJTs in a 6-kW/250-kHz dc/dc boost converter. IEEE Trans. Power Electron. 29(5), 2482-2491 (2014) https://doi.org/10.1109/TPEL.2013.2283083
  5. Peftitsis, D., Baburske, R., Rabkowski, J., Lutz, J., Tolstoy, G., Nee, H.P.: Challenges regarding parallel connection of SiC JFETs. IEEE Trans. Power Electron. 28(3), 1449-1463 (2013) https://doi.org/10.1109/TPEL.2012.2206611
  6. Khalil, A., Mohamed, O., Wang, J.: Networked control of parallel DC/DC buck converters. In: Proceedings of the IEEE Jordan Conference in Application Electrical Engineering and Computer Technology, pp. 1-6. 2015.
  7. Liu, H., Yang, Y., Wang, X., Loh, P.C., Blaabjerg, F., Wang, W., Xu, D.: An enhanced dual droop control scheme for resilient active power sharing among paralleled two-stage converters. IEEE Trans. Power Electron. 32(8), 6091-6104 (2017) https://doi.org/10.1109/TPEL.2016.2614324
  8. Wang, J.B.: Parallel DC/DC converters system with a novel primary droop current sharing control. IET Power Electron. 5(8), 1569-1580 (2012) https://doi.org/10.1049/iet-pel.2012.0216
  9. Qu, L., Zhang, D., Bao, Z.: Output current-differential control scheme for input-series-output-parallel-connected modular DC-DC converters. IEEE Trans. Power Electron. 32(7), 5699-5711 (2017) https://doi.org/10.1109/TPEL.2016.2607459
  10. Abramov, E., Vekslender, T., Kirshenboim, O., Peretz, M.M.: Fully-integrated digital average current-mode control voltage regulator module IC. IEEE J. Emerg. Sel. Topics Power Electron. 6(2), 485-499 (2018) https://doi.org/10.1109/jestpe.2017.2771949
  11. Li, Q., Liu, S., Xu, H., Wang, X.: Research on the maximum current automatic current-sharing control based on DSP. In: Proceedings of the 13th IEEE International Conference on Control Automations, pp. 1044-1049, 2017.
  12. Tahim, A.P.N., Pagano, D.J., Lenz, E., Stramosk, V.: Modeling and stability analysis of islanded DC Microgrids under droop control. IEEE Trans. Power Electron. 30(8), 4597-4607 (2015) https://doi.org/10.1109/TPEL.2014.2360171
  13. Chen, S.Y., Yang, B.C., Pu, T.A., Chang, C.H., Lin, R.C.: Active current sharing of a parallel DC-DC converters system using bat algorithm optimized two-DOF PID control. IEEE Access 7, 84757-84769 (2019) https://doi.org/10.1109/access.2019.2925064
  14. Genc, N., Iskender, I.: DSP-based current sharing of average current controlled two-cell interleaved boost power factor correction converter. IET Power Electron. 4(9), 1015-1022 (2011) https://doi.org/10.1049/iet-pel.2010.0349
  15. Yan, H., Xu, Y.X., Zou, J.B., Wang, B.C., Jiang, S.L.: A maximum current sharing method for dual-redundancy brushless DC Motor control. In: Proceedings of the 17th International Conference on Electrical, Machines and Systems, pp. 1057-1061, 2015.
  16. Effler, S., Halton, M., Rinne, K.: Efficiency-based current distribution scheme for scalable digital power converters. IEEE Trans. Power Electron. 26(4), 1261-1269 (2011) https://doi.org/10.1109/TPEL.2010.2071883
  17. Fang, W., Liu, X.D., Liu, S.C., Liu, Y.F.: A digital parallel current-mode control algorithm for DC-DC converters. IEEE Trans. Ind. Inf. 10(4), 2146-2153 (2014) https://doi.org/10.1109/TII.2014.2358455
  18. Ashiebi, A., Khalil, A., Wang, J.: Networked control of parallel DC/DC converters over CAN bus. In: Proceedings of the IEEE International Conference on Power System Technology, pp. 1-6, 2016.
  19. Chae, S., Song, Y., Park, S., et al.: Digital current sharing method for parallel interleaved DC-DC converters using input ripple voltage. IEEE Trans. Ind. Inf. 8(3), 536-5441 (2012) https://doi.org/10.1109/TII.2012.2193405
  20. Saggini, S., Ghioni, M., Geraci, A.: An innovative digital control architecture for low-voltage high-current dc-dc converters with tight voltage regulation. IEEE Trans. Power Electron. 19, 210-218 (2004) https://doi.org/10.1109/TPEL.2003.820543
  21. Fugiglando, U., Massaro, E., Santi, P., Milardo, S., Abida, K., Stahlmann, R., Netter, F., Ratti, C.: Driving behavior analysis through CAN bus data in an uncontrolled environment. IEEE Trans. Intell. Transport Syst. 20(2), 737-748 (2019) https://doi.org/10.1109/tits.2018.2836308
  22. De Andrade, R., Hodel, K.N., Justo, J.F., Lagana, A.M., Santos, M.M., Gu, Z.H.: Analytical and experimental performance evaluations of CAN-FD bus. IEEE Access 6, 21287-21295 (2018) https://doi.org/10.1109/access.2018.2826522
  23. Yao, W., Hong, X., Lu, Z.: A novel current-sharing scheme based on magamp. J. Zhejiang Univ. Sci. A 9(8), 1150-1156 (2008) https://doi.org/10.1631/jzus.A0720112
  24. Mao, Z.: Research on Current Sharing of Electroplate Power Supply Based on Magnetic Switching Control. Zhejiang University, Hangzhou (2006)