Design of Experimental Learning Module on Passive Harmonic Filter for Variable Speed Drive

摘要

To make understanding for young electrical technologist who has to solve the harmonic current problems and design solution in the future, the power harmonic solution contents should be set to power electronics course for undergraduate electrical engineering study. This paper, design of experimental learning module on passive harmonic filter for variable speed drive was proposed. The proposed learning module was consisted of experimental module and laboratory sheets and they were designed for using as experimental learning module on harmonic current filtering method by passive filter that designed for installing at the front end of variable speed drive (VSD). T connected Inductor - Capacitor -Inductor (LCL) Filter was selected and designed to set as experimental module based on experimental topic, and objective analysis. With and without filter for VSD conditions were set up in the proposed learning module. Two laboratory sheets were designed following learning objectives. Circuit experimentation of 1 kW of VSD typed passive filter were applied to verify the proposed module. As results, input current behaviors of filter installed system were clearly following theory, implying the proposed module can make understanding for undergraduate students.