The Transactions of the Korean Institute of Electrical Engineers P (전기학회논문지P)

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

Magnetic Flux Saturation Analysis of Matching Transformer Considering Characteristic of Dynamic Voltage Restorer(DVR)

DVR의 특성을 고려한 매칭변압기의 자속포화 해석

  • 손진근 (경원대학교 전기공학과) ;
  • 김동준 (숭실대학교 전기공학부) ;
  • 강민구 (숭실대학교 전기공학부) ;
  • 전희종 (숭실대학교 전기공학부)
  • Published : 2008.09.01
Download PDF
⟨ Previous Next ⟩

Abstract

This paper analyses magnetic flux saturation of matching transformer considering characteristic of dynamic voltage restorer(DVR) system to solve voltage sags which are considered the dominant disturbances affecting power quality. This DVR consist of PWM inverter to inject arbitrary voltage, LC low pass filter and matching transformer for isolation and grid connection. However, the matching transformer has an excess of inrush current by magnetic flux saturation in the core of transformer. Due to this inrush current, the rating of matching transformers is double for needed nominal rating for protection of DVR. Therefore, in this paper, an advanced modeling method of magnetic flux saturation is used to analyze a magnitude and characteristic of magnetizing current. Simulation and experimental results considering characteristic of DVR system are provided to demonstrate the validity of the proposed analysis method.

Keywords

References

  1. D. Mahinda Vilathgamuwa et al, "Voltage Sag Compensation With Energy Optimized Dynamic Voltage Restorer", IEEE Trans., POWER DELIVERY, Vol.18, NO.3, pp.928-936, July 2003 https://doi.org/10.1109/TPWRD.2003.813880
  2. P.B.Steciuk and J.R.Redmon, "Voltage sag analysis peaks customer service", IEEE Computer Applications in Power, Vol.9, No.4, pp.48-51, October 1996
  3. D. Mahinda Vilathgamuwa, H. M. Wijekoon, "Control and Analysis of a New Dynamic Voltage Resotrer Circuit Topology for Mitigating Long Duration Voltage Sags," Industry Applications Conference, 2002, 37th ISA Annual Meeting. Conference Record of the , Volume: 2, 13-18 Oct. 2002, pp.1105-1112
  4. Eric John, "Experience with a Static Series Compensation Device(DVR) at a Semiconductor Facility", ABB Power T&D Company Inc., April 1999
  5. Trutt, F. C, Erdelyi, E. A., and Hopkins, R. E., "Representation of the Magnetization Characteristic of DC Machines for Computer Use," IEEE Trans, on Power Apparatus and System, vol. 87, No. 3, 1968, pp.665-669 https://doi.org/10.1109/TPAS.1968.292178
  6. S. Nilsson, "Special application considerations for custom power systems," in Proc. IEEE PES Winter Meeting, New York, Jan-Feb. 31-04, 1999, pp.1127-1130
  7. Prusty, S. and Rao, M. V. S., "A Direct Piecewise Linearized Approach to Convert RMS Saturation Characteristic to Instantaneous Saturation Curve," IEEE Trans. on Magnetics, Vol.16, No.1, 1980, pp.156-160 https://doi.org/10.1109/TMAG.1980.1060567
  8. Fitzer, C., Arulampalam, A., Barnes, M., Zurowski, R., "Mitigation of saturation in dynamic voltage restorer connection transformers," Power Electronics, IEEE Trans. Vol. 17 , No.6 , pp. 1058-1066, Nov. 2002 https://doi.org/10.1109/TPEL.2002.805584
  9. Math H. J. Bollen, Understanding Power Quality Problems - Voltage Sags and Interrruptions, IEEE Press The Institute of Electrical and Electronics Engineers, Inc, New York, 2000