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3상 불평형 전압 시스템에서의 전압원 active power filter
김갑동(K.D.Kim),이완수(Y.S.Lee),김민태(M.T.Kim),오성업(S.U.Oh),주형준(H.J.Ju),이진(J.Lee),성세진(S.J.Seong) 전력전자학회 1999 전력전자학술대회 논문집 Vol.1999 No.7
An active power filter is used to eliminate harmonic currents. This paper applied the extension pq theory to harmonic currents compensation. An active power filter based on extension pq theory is more effective than pq theory in 3-phase unsymmetrical voltage system. When extension pq theory is used, the result of simulation present source current is not distorted. Pulse-width modulation method is CRPWM(Current-Regulated PWM).
노이즈 성분을 고려한 SRM 센서리스 알고리즘의 강인성
김갑동(K. D. Kim),최재동(J. D. Choi),김진영(J. Y. Kim),안재황(J. H. Ahn),성세진(S. J. Seong) 전력전자학회 2000 전력전자학술대회 논문집 Vol.2000 No.11
The sensorless scheme for Switched Reluctance Motor(SRM) dives must have the robustness and reliability because the noise and error are sensitive. These elements make electrically noisy environments due to the proximity of high current power circuits with small signal electronic circuits when SRM drives. Also, the leakage inductances and finite coupling capacitances, these can cause the noise on any low voltage current and voltage measurement The error can occur because the current and voltage including the noise are used as the inputs of sensorless algorithm.<br/> In this paper the high robustness and resistance of input noise are described and the fuzzy logic based rotor estimation algonthm is used to reduce the tolerance of input data.