| Title |
A Method of PLL(Phase-Locked Loop) using FFT |
| Authors |
Kang-Ryul Ryu ; Jong-Pil Lee ; Tae-Jin Kim ; Dong-Wook Yoo ; Eui-Ho Song ; Byung-Duk Min |
| Keywords |
Fast Fourier Transform algorithm; Phase Lock Loop; Grid-connected inverter; PV PCS |
| Abstract |
When the magnetic levitation system(MAGLEV) initially rise, The MAGLEV has a weak point that is very large variation of the electric current. In this paper, The author applied the multi-loop-control to stably control the magnetic levitation system(MAGLEV). The gains of the control algorithm were selected based on pole locations formulated from a prototype Bessel transfer function model. The design incorporate tradeoffs in DC-to-DC converter hard-ware para -meters and pole locations. In order to confirm the superiority of the proposed pole selection and controller, MATLAB simulation and experiment results are presented. |