The Transactions of the Korean Institute of Power Electronics (전력전자학회논문지)

The Korean Institute of Power Electronics (전력전자학회)
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Suppression of Zero Sequence Current Caused by Dead-time for Dual Inverter With Single Source

단전원 듀얼 인버터의 데드타임으로 인한 영상전류 억제 방법

  • Yoon, Bum-Ryeol (Dept. of Electronic & Electrical Engineering, University of Dankook) ;
  • Kim, Tae-Hyeong (Dept. of Electronic & Electrical Engineering, University of Dankook) ;
  • Lee, June-Hee (Propulsion System Lab, Korea Railroad Research Institute) ;
  • Lee, June-Seok (Dept of Electronic & Electrical Engineering, University of Dankook)
  • Received : 2021.11.30
  • Accepted : 2021.12.14
  • Published : 2022.04.20
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Abstract

This study proposes a suppression of zero sequence current (ZSC), which is caused by zero sequence voltage (ZSV) for a dual two-level inverter with single DC bus. Large output voltages enable the dual inverter with single DC bus to improve a system efficiency compared with single inverter. However, the structure of dual inverter with single DC bus inevitably generates ZSC, which reduces the system efficiency and causes a current ripple. ZSV is also produced by dead time, and its magnitude is determined by the DC bus and current direction. This study presents a novel space vector modulation method that allows the instantaneous suppression of ZSC. Based on a condition where a switching period is twice a sampling (control) period, the proposed control method is implemented by injecting the offset voltage at the primary inverter. This offset voltage is injected in half of the switching period to suppress the ZSC. Simulation and experiments are used to compare the proposed and conventional methods to determine the ZSC suppression performance.

Keywords

Acknowledgement

본 연구는 국토교통부 및 국토교통과학기술진흥원에서 지원하는 철도기술연구사업(과제번호: 22RTRP-C146008-05)과 정부(과학기술정보통신부)의 재원(과제번호: 2020R1G1A1100297)으로 한국연구재단의 지원을 받아 수행되었습니다.

References

  1. B. A. Welchko and J. M. Nagashima, "The influence of topology selection on the design of EV/HEV propulsion systems," IEEE Power Electronics Letters, Vol. 1, No. 2, pp. 36-40, Jun. 2003. https://doi.org/10.1109/LPEL.2003.821033
  2. D. Pan, K. Huh, and T. A. Lipo, "Efficiency improvement and evaluation of floating capacitor open-winding PM motor drive for EV application," in 2014 IEEE Energy Conversion Congress and Exposition (ECCE), pp. 837-844, 2014.
  3. K. R. Sekhar and S. Srinivas, "Discontinuous decoupled PWMs for reduced current ripple in a dual two-level inverter fed open-end winding induction motor drive," IEEE Transactions on Power Electronics, Vol. 28, No. 5, pp. 2493-2502, May, 2013. https://doi.org/10.1109/TPEL.2012.2215344
  4. M. H. V. Reddy, T. B. Reddy, B. R. Reddy, and M. Suryakalavathi, "Reduction of common mode voltage in asymmetrical dual inverter configuration using discontinuous modulating signal based PWM technique," Journal of Power Electronics, Vol. 15, No. 6, pp. 1524-1532, Nov. 2015. https://doi.org/10.6113/JPE.2015.15.6.1524
  5. Y. W. Geng, C. X. Wei, R. C. Chen, L. Wang, J. B. Xu, and S. C. Hao, "A new method for elimination of zero-sequence voltage in dual three-level inverter fed open-end winding induction motors," Journal of Power Electronics, Vol. 17, No. 1, pp. 67-75, Jan, 2017. https://doi.org/10.6113/JPE.2017.17.1.67
  6. Y. J. Lee and J. I. Ha, "Hybrid modulation of dual inverter for open-end permanent magnet synchronous motor," IEEE Transactions on Power Electronics, Vol. 30, No. 6, pp. 3286-3299, Jun. 2015. https://doi.org/10.1109/TPEL.2014.2325738
  7. S. Lakhimsetty, N. Surulivel, and V. T. Somasekhar, "Improvised svpwm strategies for an enhanced performance for a four-level open-end winding induction motor drive," IEEE Transactions on Industrial Electronics, Vol. 64, No. 4, pp. 2750-2759, Apr. 2017. https://doi.org/10.1109/TIE.2016.2632059
  8. B. V. Reddy, V. T. Somasekhar, and Y. Kalyan, "Decoupled space-vector PWM strategies for a four-level asymmetrical open-end winding induction motor drive with waveform symmetries," IEEE Transactions on Industrial Electronics, Vol. 58, No. 11, pp. 5130-5141, Nov. 2011. https://doi.org/10.1109/TIE.2011.2116759
  9. J. H. Kim, J. H. Jung, and K. H. Nam, "Dual-inverter control strategy for high-speed operation of EV induction motors," IEEE Transactions on Industrial Electronics, Vol. 51, No. 2, pp. 312-320, Apr. 2004. https://doi.org/10.1109/TIE.2004.825232
  10. J. S. Hong, H. K. Lee, and K. H. Nam, "Charging method for the secondary battery in dual-inverter drive systems for electric vehicles," IEEE Transactions on Power Electronics, Vol. 30, No. 2, pp. 909-921, Feb. 2015. https://doi.org/10.1109/TPEL.2014.2312194
  11. Q. An, J. Liu, Z. Peng, L. Sun, and L. Sun, "Dual-space vector control ofopen-end winding permanent magnet synchronous motor drive fed by dual inverter," IEEE Transactions on Power Electronics, Vol. 31, No. 12, pp. 8329-8342, Dec. 2016. https://doi.org/10.1109/TPEL.2016.2520999
  12. K. S. Anusha and P. P. Rajeevan, "A carrier based PWM scheme for dual inverter-fed open-end winding induction motor with single DC source," in IEEE India International Conference on Power Electronics (IICPE), pp. 1-5, Dec. 2018.
  13. H. Lu, W. Qu, X. Cheng, Y. Fan, and X. Zhang, "A novel PWM technique with two-phase modulation," IEEE Trans. Power Electron., Vol. 22, No. 6, pp. 2403-2409, Nov. 2007. https://doi.org/10.1109/TPEL.2007.909250