Shunt active filter using transistor clamped multilevel inverter

Inverter is a power electronic circuit that converts DC supply into AC supply of desired frequency and voltage. Based on the voltage levels at the output, inverters are classified as two level voltage source inverter and multilevel inverter. Advantages of multilevel inverters over two level inverters are less harmonic distortion and reduced electromagnetic interference. Because of these advantages, multilevel inverters are widely employed for active power filtering, reactive power compensation and speed control of electrical machine drives. Apart from this multilevel inverters are also used to interface renewable energy sources with the electrical energy source. Active power filters are generally used for reactive power compensation to improve power quality. By reactive power compensation losses are reduced which results in energy saving. In this work a shunt active filter using transistor clamped multilevel inverter is proposed. The proposed shunt active filter is simulated using MATLAB/SIMULINK. The results are compared with the shunt active filter using two level inverter which shows the superiority of the proposed method.