Performance evaluation of adjustable speed drives with distribution static compensator

Adjustable speed drives (ASD) employing induction motors are widely used in the industrials and process control in the form of varied applications such as fans, compressors, pumps etc. They are energy efficient and can result in substantial energy saving when properly installed. However, they inject high harmonic content into current drawn from the ac system. This paper deals with the application of a DSTATCOM for compensation of such loads. The MATLAB / Simulink based models are developed for adjustable speed drive loads. The analysis is carried out with and without DSTATCOM. The results shown in the paper prove that DSTATCOM can be used as a good harmonic filter.