SRF Based Cascaded Multilevel Active Filter
|International Journal of Engineering Trends and Technology (IJETT)||
|© 2013 by IJETT Journal|
|Year of Publication : 2013|
|Authors : Narisetti Sai Lakshmi , B.N. Kartheek|
Narisetti Sai Lakshmi , B.N. Kartheek. "SRF Based Cascaded Multilevel Active Filter ". International Journal of Engineering Trends and Technology (IJETT). V4(4):1257-1263 Apr 2013. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group.
In this paper a power line conditioner using a cascaded multilevel inverter based shunt active filter using synchronous reference frame (SRF) controller is developed to improve the power quality in the distribution system . The cascaded multilevel inverter consists of two H - bridges in which each bridge has separate dc source. Gati ng signals to the cascaded multilevel voltage source inverter are generated from proposed triangular - carrier current controller. Here control strategy is different from conventional methods and provides superior performance. Using Reference Frame Transform ation, the current is transformed from a ? b ? c stationery frame to rotating 0 ? d ? q frame. Using the PI controller, the current in the 0 ? d ? q frame is controlled to get the desired reference signal. This proposed cascaded five level active power fil ter system is validated through MATLAB/SIMULINK Platform. From simulation results observed that the cascaded multilevel inverter based shunt active filter effectively compensates the current harmonics
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Power line conditioner, Synchronous referenc e frame controller, triangular carrier current controller, power quality.