| Title |
Dynamic Characteristics Improvement of a Step-Down Chopper Using Load Current Feed-Forward Compensator |
| Authors |
Ji-Young Chun ; Kee-Young Jeon ; Choon-Byeong Chung ; Kyung-Hee Han |
| Keywords |
Feed-Forward ; Resonanoe Frequency |
| Abstract |
In this paper, The author present a load current feed-forward compensator by method that improve voltage controller of Step-down Chopper to get stable output voltage to sudden change of load current. To confirm the characteristicsof a presented load current feed-forward compensator compared each transfer function of whole system that load cunent feed-forward compensator is added with transfer function of whole system that existent voltage controller is included using Mason gains formula in Root locus and Bode diagram. As a result the pole of system is improved, extreme point of the wave and system improves, and size of peak value and phase margin of break frequency in resonance frequency confirmed that is good. Therefore, presented control technique could confirm that reduce influence by perturbation and improves stationary state and dynamic characteristics in output of Step-down Chopper. |