| Title |
Orthogonal Filter Design Using Improved Fast Wash Transform Algorithm |
| Authors |
신승권(Shin, Seung-Kwon) ; 조영호(Cho, Young-Ho) ; 김태훈(Kim, Tai-Hoon) ; 정제욱(Jung, Je-Wook) ; 이한석(Lee, Han-Seok) ; 안두수(Ahn, Doo-Soo) |
| Keywords |
fast Walsh transform ; digital filtering ; harmonics |
| Abstract |
This paper developed improved fast Walsh transform based on dyadic-ordered fast Walsh transform, then regenerated signal flow graph of improved fast Walsh transform, and used it for digital filtering, and then measured fundamental frequency and harmonics for current and voltage signals of power system. Using the improved fast Walsh transform, we present a new algorithm which reduces the computational amount, and it can consequently calculate the real and imaginary components for current and voltage signals of power system in sampling intervals. The calculation amount is reduced to 2(N-1) at N samples to measure full harmonics using developed algorithm. When, in single harmonic measuring, it needs only 2(log2N-1) additions and subtractions. |