| Title |
Dynamic Voltage Restorer Control Using H_∞ Algorithm |
| Authors |
전영환(Chun, Yeong-Han) ; 김지원(Kim, Ji-Won) ; 전진홍(Jeon, Jin-Hong) |
| Keywords |
DVR ; Voltage ; Robust Control ; Inverter |
| Abstract |
Recent trend of increasing automated factories needs supply of high quality power from the utilities. Among the items of the power quality, voltage sag can be compensated by Dynamic Voltage Restorer(DVR). The key feature of the DVR is high response with less transient period to recover from the voltage sag due to the lightning or line-to-ground faults. In this paper we report that H_∞ controller is very promising for the practical application to the controller of DVR. Experimental results shown in this paper was obtained by applying the control algorithm to 20 kVA DVR system. The experimental set consists of IGBT-based three phase inverter and the TMS320C32-60 DSP used for main processor of the control board. To simulate the 50% voltage sag, the SCR-based experimental set was constructed. |