Research on protection and control technology of power electronic transformers

Research Article
Open access

Research on protection and control technology of power electronic transformers

Xianghao Sun 1*
  • 1 North China Electric Power University    
  • *corresponding author 1811000316@mail.sit.edu.cn
Published on 25 September 2023 | https://doi.org/10.54254/2755-2721/11/20230260
ACE Vol.11
ISSN (Print): 2755-273X
ISSN (Online): 2755-2721
ISBN (Print): 978-1-83558-011-0
ISBN (Online): 978-1-83558-012-7

Abstract

As the key equipment in the modern power system, the power electronic transformer's performance and reliability play a vital role in the stable operation of the power system. This paper studies the soft switching technology, control technology and fault protection method of power electronic transformer. First, the soft switching technology of power electronic transformers is introduced, including zero voltage switching, zero current switching and so on. These soft switching technologies can effectively reduce the switching loss of the transformer, improve efficiency, and reduce electromagnetic interference and harmonic generation. Secondly, the control technology of power electronic transformer is introduced, including traditional proportional, integral, and derivative control (PID) control, model predictive control and direct power control. These control technologies can realize the precise control of the output voltage and current of the power electronic transformer, to meet the requirements of the power system for power quality and stability. In addition, this paper also introduces the fault protection methods of power electronic transformers, including short-circuit protection, over-voltage protection and over-medium current protection. These fault protection methods can effectively protect power electronic transformers from various faults and ensure their normal operation and safety.

Keywords:

soft switching, control technology, fault protection.

Sun,X. (2023). Research on protection and control technology of power electronic transformers. Applied and Computational Engineering,11,257-262.
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References

[1]. Kim, D., Choi, D. H., & Choi, S. S. (2016). A model-based protection scheme for power electronic transformers. IEEE Transactions on Power Delivery, 31(5), 2082-2090.

[2]. Liu, Y., Chen, C., Sun, Y., Li, J., & Wang, J. (2017). Overcurrent protection for power electronic transformer based on artificial neural network. Journal of Power Electronics, 17(1), 220-231.

[3]. Nakamura, K., Ise, T., & Kondo, K. (2015). Model predictive control of a power electronic transformer with high efficiency and stability. IEEE Transactions on Power Electronics, 30(2), 822-831.

[4]. Zhang, Q., Wang, X., & Yang, X. (2014). Adaptive fuzzy control of a power electronic transformer for renewable energy integration. IEEE Transactions on Industrial Electronics, 61(1), 222-231.

[5]. Rodriguez, Jih-Sheng Lai, and Fang Zheng Peng, “Multilevel inverters: a survey of topologies, controls, and applications,” IEEE Trans. Ind. Electron., vol. 49, no. 4, pp. 724-738, Aug. 2002, doi: 10.1109/TIE.2002.801052.

[6]. L. Zhang, X. Wang, F. Blaabjerg, andS. Munk-Nielsen, "Power electronic transformer for solid-state transformers: topologies, modeling, and control." IEEE Transactions on Power Electronics, Vol. 38, No. 7, pp. 1600-1617, July 2023.

[7]. X. She, A. Q. Huang, and G. Wang, “3-D Space Modulation with Voltage Balancing Capability for a Cascaded Seven-Level Converter in a Solid-State Transformer,” IEEE Trans. Power Electron., vol. 26, no. 12, pp. 3778-3789, Dec. 2011, doi: 10.1109/TPEL.2011.2142422.

[8]. T. Zhao, G. Wang, S. Bhattacharya, and A. Q. Huang, “Voltage and Power Balance Control for a Cascaded H-Bridge Converter-Based Solid-State Transformer,” IEEE Trans. Power Electron., vol. 28, no. 4, pp. 1523-1532, Apr. 2013, doi: 10.1109/TPEL.2012.2216549.

[9]. Z. Li, P. Wang, Z. Chu, ‘‘Research on power Electronic Transformer for medium and high voltage intelligent distribution network’’ [J]. Power grid technology, vol. 32, pp.223-224

[10]. D. Lu, Y. Xing, Liu. Z, X. Chen, and F. Wang, “A Soft-Switching Dual-Active-Bridge Converter with DC Fault Protection for Medium-Frequency Transformer-Isolated Bidirectional Dual Active Bridge DC-DC Converters", vol. 13, pp.112-118

[11]. Z. Ji, D. Li, Y. Sun, ‘‘Research on a three-phase cascade electric power electronic transformer and its control strategy’’ [J]. Journal of Electric Motor and Control, 2016, 20 (8): 32-39, 47.

[12]. Bifaretti, P. Zanchetta, A. Watson, L. Tarisciotti, and J. C. Clare, “Advanced Power Electronic Conversion and Control System for Universal and Flexible Power Management,” IEEE Trans. Smart Grid, vol. 2, no. 2, pp. 231-243, Jun. 2011, doi: 10.1109/TSG.2011.2115260.

[13]. J. M. Cuartas, A. de la Cruz, F. Briz, and M. Lopez, “Start-up, functionalities and protection issues for CHB-based solid state transformers,” in 2017 IEEE International Conference on Environment and Electrical Engineering and 2017 IEEE Industrial and Commercial Power Systems Europe (EEEIC/I&CPS Europe), Milan, Italy: IEEE, Jun. 2017, pp. 1-5. doi: 10.1109/EEEIC.2017.7977840.

[14]. Z. Lei, G. Fei, B. Frede, C. Zhe "Fault Detection and Diagnosis for Modular Multilevel Converters in Power Electronic Transformer", IEEE Trans. Power Electron., vol. 24, pp.265-270

[15]. T. Guillod, F. Krismer and J. W. Kolar, "Protection of MV Converters in the Grid: The Case of MV/LV Solid-State Transformers," in IEEE Journal of Emerging and Selected Topics in Power Electronics, vol. 5, no. 1, pp. 393-408, March 2017, doi: 10.1109/JESTPE.2016.2617620.

[16]. F. Ali; Ge, Y. Covic, G. A. Fault Protection Strategies for High-Frequency Transformers in Power Electronics Applications", IEEE Trans. Power Electron., vol. 34, pp.275-278

Cite this article

Sun,X. (2023). Research on protection and control technology of power electronic transformers. Applied and Computational Engineering,11,257-262.

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About volume

Volume title: Proceedings of the 2023 International Conference on Mechatronics and Smart Systems

ISBN：978-1-83558-011-0(Print) / 978-1-83558-012-7(Online)
Editor：Alan Wang, Seyed Ghaffar
Conference website: https://2023.confmss.org/
Conference date: 24 June 2023
Series: Applied and Computational Engineering
Volume number: Vol.11
ISSN：2755-2721(Print) / 2755-273X(Online)

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References

[1]. Kim, D., Choi, D. H., & Choi, S. S. (2016). A model-based protection scheme for power electronic transformers. IEEE Transactions on Power Delivery, 31(5), 2082-2090.

[2]. Liu, Y., Chen, C., Sun, Y., Li, J., & Wang, J. (2017). Overcurrent protection for power electronic transformer based on artificial neural network. Journal of Power Electronics, 17(1), 220-231.

[3]. Nakamura, K., Ise, T., & Kondo, K. (2015). Model predictive control of a power electronic transformer with high efficiency and stability. IEEE Transactions on Power Electronics, 30(2), 822-831.

[4]. Zhang, Q., Wang, X., & Yang, X. (2014). Adaptive fuzzy control of a power electronic transformer for renewable energy integration. IEEE Transactions on Industrial Electronics, 61(1), 222-231.

[5]. Rodriguez, Jih-Sheng Lai, and Fang Zheng Peng, “Multilevel inverters: a survey of topologies, controls, and applications,” IEEE Trans. Ind. Electron., vol. 49, no. 4, pp. 724-738, Aug. 2002, doi: 10.1109/TIE.2002.801052.

[6]. L. Zhang, X. Wang, F. Blaabjerg, andS. Munk-Nielsen, "Power electronic transformer for solid-state transformers: topologies, modeling, and control." IEEE Transactions on Power Electronics, Vol. 38, No. 7, pp. 1600-1617, July 2023.

[7]. X. She, A. Q. Huang, and G. Wang, “3-D Space Modulation with Voltage Balancing Capability for a Cascaded Seven-Level Converter in a Solid-State Transformer,” IEEE Trans. Power Electron., vol. 26, no. 12, pp. 3778-3789, Dec. 2011, doi: 10.1109/TPEL.2011.2142422.

[8]. T. Zhao, G. Wang, S. Bhattacharya, and A. Q. Huang, “Voltage and Power Balance Control for a Cascaded H-Bridge Converter-Based Solid-State Transformer,” IEEE Trans. Power Electron., vol. 28, no. 4, pp. 1523-1532, Apr. 2013, doi: 10.1109/TPEL.2012.2216549.

[9]. Z. Li, P. Wang, Z. Chu, ‘‘Research on power Electronic Transformer for medium and high voltage intelligent distribution network’’ [J]. Power grid technology, vol. 32, pp.223-224

[10]. D. Lu, Y. Xing, Liu. Z, X. Chen, and F. Wang, “A Soft-Switching Dual-Active-Bridge Converter with DC Fault Protection for Medium-Frequency Transformer-Isolated Bidirectional Dual Active Bridge DC-DC Converters", vol. 13, pp.112-118

[11]. Z. Ji, D. Li, Y. Sun, ‘‘Research on a three-phase cascade electric power electronic transformer and its control strategy’’ [J]. Journal of Electric Motor and Control, 2016, 20 (8): 32-39, 47.

[12]. Bifaretti, P. Zanchetta, A. Watson, L. Tarisciotti, and J. C. Clare, “Advanced Power Electronic Conversion and Control System for Universal and Flexible Power Management,” IEEE Trans. Smart Grid, vol. 2, no. 2, pp. 231-243, Jun. 2011, doi: 10.1109/TSG.2011.2115260.

[13]. J. M. Cuartas, A. de la Cruz, F. Briz, and M. Lopez, “Start-up, functionalities and protection issues for CHB-based solid state transformers,” in 2017 IEEE International Conference on Environment and Electrical Engineering and 2017 IEEE Industrial and Commercial Power Systems Europe (EEEIC/I&CPS Europe), Milan, Italy: IEEE, Jun. 2017, pp. 1-5. doi: 10.1109/EEEIC.2017.7977840.

[14]. Z. Lei, G. Fei, B. Frede, C. Zhe "Fault Detection and Diagnosis for Modular Multilevel Converters in Power Electronic Transformer", IEEE Trans. Power Electron., vol. 24, pp.265-270

[15]. T. Guillod, F. Krismer and J. W. Kolar, "Protection of MV Converters in the Grid: The Case of MV/LV Solid-State Transformers," in IEEE Journal of Emerging and Selected Topics in Power Electronics, vol. 5, no. 1, pp. 393-408, March 2017, doi: 10.1109/JESTPE.2016.2617620.

[16]. F. Ali; Ge, Y. Covic, G. A. Fault Protection Strategies for High-Frequency Transformers in Power Electronics Applications", IEEE Trans. Power Electron., vol. 34, pp.275-278

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