| Title |
The Operating System of High-power LED module with Back-Boost Mode |
| Authors |
Ji-Hyun Chung ; Sung-Geun Song ; Sung-Jun Park ; Young-Hak Chang ; Chae-Joo Moon |
| Keywords |
back-boost mode; high-power LED; light source; wind and solar energy; reactor; PWM Controller |
| Abstract |
This paper presents an improved sensorless vector control system for high performance induction motor drives fed by a matrix converter with non-linearity compensation. The nonlinear voltage distortion that is caused by commutation delay and on-state voltage drop in switching devices is corrected by a new matrix converter model. A Reduced Order Extended Luenberger Observer (ROELO) is employed to bring better response in the whole speed operation range and a method to select the observer gain is presented. Experimental results are shown to illustrate the performance of the proposed system. |