Journal of the Korean Society of Marine Environment & Safety (해양환경안전학회지)

The Korean Society of Marine Environment and safety (해양환경안전학회)
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Harmonic Reduction Scheme By the Advanced Auxiliary Voltage Supply

개선된 보조전원장치에 의한 고조파 저감대책

  • Yoon, Doo-O (Proposal&Engineering Team1, Samsung Heavy Industries Co., LTD.) ;
  • Yoon, Kyoung-Kuk (R&D Center, Seanet Co., LTD.) ;
  • Kim, Sung-Hwan (Marine System Engineering, Korea Marine Engineering University)
  • Received : 2015.11.12
  • Accepted : 2015.12.28
  • Published : 2015.12.31
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Abstract

Diode rectifiers are very popular in industry. However, they include large low-order harmonics in the input current and do not satisfy harmonic current content restrictions. To reduce the harmonics to the power system, several methods have been introduced. It is heavy and expensive solution to use passive filters as the solution for high power application. Another solution for the harmonic filter is utilization of active filter, but it is too expensive solution. Diode rectifiers with configurations using switching device have been introduced, but they are very complicated. The combined 12-pulse diode rectifier with the square auxiliary voltage supply has been introduced. It has the advantages that auxiliary circuit is simple and inexpensive compared to other strategies. The advanced auxiliary voltage supply in this thesis is presented as a new solution. When the square auxiliary voltage supply applied, the improvement of THD is 6~60[%] in whole load range. But when the advanced auxiliary voltage supply applied, it shows stable and excellent reduction effect of THD as 57~71[%]. Especially, for the case with 10[%] load factor, reduction effect of THD has little effect as 6[%] in the case of inserting a square auxiliary voltage supply. But when the proposed new solution applied, reduction effect has excellent effect as 71[%]. Theoretical analysis of the combined 12-pulse diode rectifier with the advanced auxiliary voltage supply is presented and control methods of the auxiliary supply is proposed. The reduction in the input current harmonics is verified by simulation using software PSIM.

본 논문에서는 12펄스 정류기의 커패시터 중앙 DC버스에 개선된 보조전원장치를 설치하는 방법을 제안하였다. 11차 및 13차 고조파가 감소하는 이론적인 배경을 다루었으며 부하전류의 크기, 전원전압의 위상 및 크기, 커패시터 전압에 따라 개선된 보조전원의 파형 및 크기가 어떻게 제어되어야 하는지를 제시하였다. 기존의 구형파 보조전원장치를 적용한 경우는 전 영역에서 고조파 왜형률이 6~60[%]로 큰 편차를 보이지만 본 눈문에서 제안하는 개선된 보조전원장치를 적용한 경우 저 부하에서 고 부하에 이르는 전 영역에서 57~71[%] 라는 안정되고 뛰어난 고조파 왜형율 저감 효과를 보인다. 특히 10[%] 부하상태에서 기존방식은 고조파 왜형율 저감 효과가 6[%]로 효과가 거의 없지만 제안된 방식은 71[%]라는 놀라운 저감성능을 보여주고 있다. 소프트웨어 PSIM을 활용하여 컴퓨터 시뮬레이션을 통해 제안된 방식의 유효성을 입증하였다.

Keywords

References

  1. Choi, S., P. Enjeti, H. Lee and I. Pitel(1996), A new active interphase reactor for 12-pulse rectifiers provides clean power utility interface, IEEE Trans. Ind. Appl., Vol. 32, No. 6, pp. 1304-1311. https://doi.org/10.1109/28.556632
  2. Fujita, H. and H. Akagi(1996), An approach to harmonicfree AC/DC power conversion for large industrial loads: The integration of a series active filter with a double-series diode rectifier, in Proc. IEEE IAS Annu. Meeting, pp. 1040-1047.
  3. Lee, H. B.(2013), A study on harmonic reduction scheme for 12-pulse diode rectifiers by auxiliary voltage supply, Busan, Master Thesis, Graduate school of Korea Marine Engineering University.
  4. Masukawa, S., and S. Iida(1994), A method for reducing harmonics in output voltages of a double connected inverter, IEEE Trans. Power Electron., Vol. 9, No. 5, pp. 543-550. https://doi.org/10.1109/63.321039
  5. Miyairi, S., S. Iida and K. Nakata(1986), New method for reducing harmonics improved in input and output of rectifier with interphase transformer, IEEE Trans. Ind. Appl., Vol. IA-22, No. 5, pp. 790-797. https://doi.org/10.1109/TIA.1986.4504795
  6. Nishida, Y. and M. Nakaoka(1998), A new harmonic reducing diode rectifier of capacitor input Type for industrial high-voltage and high-power applications, in Proc. 33rd IEEE IAS Annu. Meeting, pp. 1286-1293.
  7. Tangtheerajaroonwong, W., T. Hatada, K. Wada and H. Akagi(2007), Design and performance of a transformerless shunt hybrid filter integrated into a three-phase diode rectifier, IEEE Trans. Power Electron., Vol. 22, No. 5, pp. 1882-1889. https://doi.org/10.1109/TPEL.2007.904166
  8. Villablanca, M., J. Nadal and M. Bravo(2007), A12-pulse ac-dc rectifier with high-quality input/output waveforms, IEEE Trans. Power Electron., Vol.22, No. 5, pp. 1875-1881. https://doi.org/10.1109/TPEL.2007.904185