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

The Korean Institute of Power Electronics (전력전자학회)
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Implementation Method of Overmodulation Technique With High Linearity in DSP

선형성이 우수한 과변조 기법의 DSP 구현 방법

  • Kim, Joon-Seok (Dept. of Electronic & Electrical Engineering, University of Dankook) ;
  • Kim, Do-Hyen (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 : 2021.11.29
  • Accepted : 2021.12.01
  • Published : 2022.04.20
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Abstract

With the aim to maximize the use of a given voltage source in the field of railway and electric vehicles, this study applies a technique for controlling the overmodulation region between the linear and the six-step regions. High linearity overmodulation techniques that do not use look-up table (LUT) to digital signal processor (DSP) using carrier based pulse width modulation (PWM) are proposed. Such technique requires the phase of the voltage vector at the point where the circular trajectory of the voltage command vector and hexagonal cross each other. Therefore, a method is proposed to obtain a phase of a voltage vector that is derived through an equation and applied to a carrier-based PWM. Validity of the proposed implementation method is confirmed through simulation and experiment.

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. A. M. Hava, R. J. Kerkman, and T. A. Lipo, "Carrier-based PWM-VSI overmodulation strategies: analysis, comparison, and design," IEEE Transactions on Power Electronics, Vol. 13, No. 4, pp. 674-689, Jul. 1998. https://doi.org/10.1109/63.704136
  2. J. Chen, R. Ni, T. Li, R. Qiu, and Z. Liu, "The harmonic characteristic of the advanced synchronous SVPWM overmodulation strategy," IEEE Access, Vol. 7, pp. 148934-148949, 2019. https://doi.org/10.1109/access.2019.2946654
  3. T. H. Nguyen and D. Lee, "Extension of the operating speed for vector-controlled induction machine drives in the overmodulation range," Journal of Power Electronics, Vol. 12, No. 3, pp. 477-486, 2012. https://doi.org/10.6113/JPE.2012.12.3.477
  4. A. M. Hava, S. K. Sul, R. J. Kerkman, and T. A. Lipo, "Dynamic overmodulation characteristics of triangle intersection PWM methods," IEEE Transactions on Industry Applications, Vol. 35, No. 4, pp. 896-907, Jul./Aug. 1999. https://doi.org/10.1109/28.777199
  5. J. W. Yoo and S. K. Sul, "Dynamic overmodulation for improved current regulation of PMSM," in 2020 IEEE Energy Conversion Congress and Exposition (ECCE), pp. 5368-5374, 2020.
  6. H. K. Lee, S. M. Hong, J. W. Choi, K. H. Nam, and J. H. Kim, "Sector-based analytic overmodulation method," IEEE Transactions on Industrial Electronics, Vol. 66, No. 10, pp. 7624-7632, Oct. 2019. https://doi.org/10.1109/tie.2018.2883270
  7. S. Li, W. Chen, Y. Yan, T. Shi, and C. Xia, "A multimode space vector overmodulation strategy for ultrasparse matrix converter with improved fundamental voltage transfer ratio," IEEE Transactions on Power Electronics, Vol. 33, No. 8, pp. 6782-6793, Aug. 2018. https://doi.org/10.1109/TPEL.2017.2752748
  8. T. G. Habetler, F. Profumo, M. Pastorelli, and L. M. Tolbert, "Direct torque control of induction machines using space vector modulation," in Conference Record of the 1991 IEEE Industry Applications Society Annual Meeting, Vol. 1, pp. 428-436, 1991.
  9. H. K. Lee, S. M. Hong, J. W. Choi, K. H. Nam, and J. H. Kim, "Sector-based analytic overmodulation method," IEEE Transactions on Industrial Electronics, Vol. 66, No. 10, pp. 7624-7632, Oct. 2019. https://doi.org/10.1109/tie.2018.2883270
  10. S. Bolognani and M. Zigliotto, "Novel digital continuous control of SVM inverters in the overmodulation range," IEEE Transactions on Industry Applications, Vol. 33, No. 2, pp. 525-530, Mar./Apr. 1997. https://doi.org/10.1109/28.568019
  11. V. Kaura and V. Blasko, "A new method to extend linearity of a sinusoidal PWM in the overmodulation region," IEEE Transactions on Industry Applications, Vol. 32, No. 5, pp. 1115-1121, Sep./Oct. 1996. https://doi.org/10.1109/28.536873
  12. Y. C. Kwon, S. K. Kim, and S. K. Sul, "Six-step operation of PMSM with instantaneous current control," IEEE Transactions on Industry Applications, Vol. 50, No. 4, Jul./Aug. 2014.