순환 DFT에 기초한 동기 위상 측정 장치의 ASIC 구현

An ASIC Implementation of Synchronized Phasor Measurement Unit based on Sliding-DFT

  • 김종윤 (중앙대 전자전기공학부) ;
  • 장태규 (중앙대 전자전기공학부) ;
  • 김재화 (삼성전자(주) 디지털미디어 총괄 중앙연구소)
  • 발행 : 2001.12.01

초록

This paper presents an implementation method of multi-channel synchronized phasor measurement device, which is based on the ASIC implementation of the sliding-DFT. A time-shared multiplier structure is proposed to minimize the number of gates required for the implementation. The design is verified by the timing simulation of its operation. The effect of coefficient approximation in the recursive implementation of the sliding-DFT is analytically derived and verified with the computer simulations.

키워드

참고문헌

  1. Y.C. Lim, Bede Liu, 'Pipelined Recursive Filter with Minimum Order Augmentation,' IEEE Trans. on Signal Processing, vol. 40, no. 7, pp. 1643-1650, July 1992 https://doi.org/10.1109/78.143436
  2. K. J. R. Liu, C.T. Chiu, K.K. Kolagotla, and J.F. Ja'Ja', 'Optimal unified architectures for the real-time computation of time-recursive discrete sinusoidal transforms,' IEEE Trans. on Circuits Syst. Video Technol., vol. 4, pp. 168-180, Apr. 1994 https://doi.org/10.1109/76.285623
  3. N. R. Murthy and M. N. S. Swamy, 'On the computation of running discrete cosine and sine transforms,' IEEE Trans. on Signal Processing, vol. 40, no. 6, pp. 1430-1437, June 1992 https://doi.org/10.1109/78.139246
  4. Gabor Peceli, 'A Common Structure for recursive Discrete Transforms,' IEEE Trans. on Circuits and Systems, Vol. CAS-33, No. 10, pp. 1035-1036, Oct. 1986
  5. Frabcoise Beaufays, Bernard Widrow, 'On the Advantages of the LMS Spectrum Analyzer Over Nonadaptive Implementation of the Sliding-DFT,' IEEE Tran. on Circuits and Systems-Part I : Fundamental Theory and Applications, Vol. 42, No. 4, pp. 218-220, April 1995 https://doi.org/10.1109/81.382476
  6. A. V. Oppenheim and C. J. Weinsten, 'Effects of finite register length in digital filtering and the Fast Fourier Transform,' Proceedings of IEEE, vol.60, no.8, pp. 957-976, Aug. 1972
  7. Jae-Hwa Kim, and Tae-Gyu Chang, 'Analytic Derivation of Finite Wordlength Effect of the Twiddle factors in Recursive Implementation of the Sliding-DFT,' IEEE Transactions on Signal Processing, No. 5, Vol. 48, pp. 1485-1488, May 2000 https://doi.org/10.1109/78.839998