| Title |
Direct Torque Control of Induction Motor by Torque Slope and Reference Voltage Control |
| Authors |
김평호(Kim Pyoung-Ho) ; 최연옥(Choi Youn-Ok) ; 조금배(Cho Geum-Bae) ; 백형래(Baek Hyung-Lae) ; 이상일(Lee Sang-Il) |
| Keywords |
DTC(Direct Torque Control) ; Induction Motor ; Torque Slope ; Reference Voltage ; Torque Ripple |
| Abstract |
The conventional hysterysis band DTC(Direct Torque Control) strategy have relatively high torque ripple at low speed and variable switching frequency according to motor speed even though it provides a fast torque response with very simple scheme consisted with only two hysteresis band comparators and a switching table for torque and flux control. In this paper, author proposed a new DTC scheme based on the torque slope and reference voltage control. The new scheme can maintain the minimized torque ripple and constant switching frequency. Experimental tests carried out with an 1.5kW induction motor drive system show improved dynamic characteristics and prove the feasibility of proposed strategy. |