| Title |
The Method for Harmonics Elimination of a Single Phase Current by the Analog Relay Control Circuit and Passive Filters |
| Authors |
박종연(Park, Jong-Yeon) ; 이후찬(Lee, Hu-Chan) ; 이봉진(Lee, Bong-Jin) ; 최원호(Choi, Won-Ho) |
| Keywords |
Passive Filter ; Harmonic ; Analog Circuit ; GIC ; Flip-Flop |
| Abstract |
Because of the high cost for the active power filter, passive filters have been widly used to eliminate harmonic currents of nonlinear load and can also improve the power factor. They are not often optimal filters because the passive filters are designed under the fixed load conditions. In this paper we proposed the method which only the necessary harmonic filters are operated by detecting the various harmonic current components. We presents the new control method of passive filter selection type with the relay control circuit which is consist of analog GIC, comparater, flip-flop and etc. By the experimental results using the proposed system for the rectifier load, we concluded that the researched method is cost effective and the performance is better than the passive filter. |