A torque ripple reduction technique of direct torque control (DTC) for high power induction motors driven by 3-level inverters with
the inverter switching frequency limited around 0.5-1 kHz level is presented. It is noted that conventional DTC algorithms to reduce
torque ripple are devised for applications with relatively high switching frequency above 2-3 MHz. Such conventional algorithms
cannot accomplish satisfactory torque ripple reduction for 3-level inverter systems with lower switching frequency. A new DTC
algorithm, especially for low switching frequency inverter system, illustrates relatively reduced torque ripple characteristics all over
the operating speed region. Simulation and experimental results show effectiveness of the proposed control algorithm.
- 2.pdf (477.9K) 9회 다운로드 | DATE : 2019-06-29 15:31:12