17. PV-Based Multilevel Inverter-Fed Three-Phase Induction Motor with Improved Time and Speed of Response

In the present power scenario, the power quality is most significant in the field of grid-connected and load-connected inverter. A number of techniques were proposed in the field of renewable energy for improving the efficiency and quality of the power. In this article, the time response of the controller was analysed and verified for load-connected multilevel inverter. There are different types of controllers in use, such as Proportional (P), Proportional Integral (PI), Proportional Integral Derivative (PID), Integer Order PID (IOPID), etc. Out of those controllers classic PI controller is most efficient in the speed of response, that’s why the classic PI controller is compared with proposed Fractional Order Proportional Integral Derivative controller (FOPID). Based on the results, FOPID has more speed of response. The outputs of the multilevel inverter are to be improved by minimizing the rise time, settling time and steady-state error of the inverter. The Simulink model was built to control the motor speed and it will going to be applied for grid in the future.