Robust Active Power Filter Controller Design for Microgrid and Electric Vehicle Application

Abstract

e integration of renewable energy sources (RES) like solar and wind-based distributed newlinegeneration systems (DGs) introduces many technical challenges related to the power system newlineoperation, stability, and control despite its number of economy, availability, and newlineenvironmental benefits. The change in the environmental condition also affects the system newlineperformances like the voltage, current, power, and torque. To achieve the desired linear newlineoutput, it is necessary to regulate the voltage and current of the RES nearer to its optimum newlinepoint. Any sudden deviation in the voltage, current, torque, also affects the system power newlinequality and stability of the system. Therefore, to offer better performances, it is required to newlinecontrol the voltage and current flow of the designed model at its prescribed limit of IEEE. newlineRecently, the excess application of non-linear load and power electronic-based devices, the newlinepower quality (PQ), and power reliability (PR) of the modeled system is considerably newlineaffected. Looking at the present need, this research work stresses on the improvement of PQ, newlinePR, and stability of DGs by properly designing and controlling the shunt active filter (SHAF) newlineperformances during both steady-state and dynamic state conditions. newlineTo circumvent the above problems and provide better PQ and stability, different cascaded newlineH-bridge reduced switch multi-level inverters (RSMLI) such as 7-level, 11-level,13-level, newlineand 31-level based SHAFs is designed and integrated with RES based microgrid system. In newlinethis thesis, a detailed modeling and comparative study about the different SHAF newlineperformances are presented looking at real-time microgrid (MG) applications. To show the newlineadvantages of the proposed RSMLI application, the literature review regarding the traditional newlineinverter and its limitations are discussed. Due to the advancement of RSMLI application and newlineto reduce the cost, complexity, and size, this thesis is more focused on single-stage grid newlineintegrated microgrid operation. To circumvent the PQ and PR problems of the microgrid newlinesystem, the performance of RSMLI applications are tested through different testing scenarios newlinesuch as steady-state and dynamic conditions. During the starting period of the thesis, by newlinereplacing the proportional and integral (PI) controller, the repetitive controller (RC) is used newlineto regulate the dc-link voltage and generate appropriate pulses for the RSMLI switching newlineoperation. Furthermore, the MATLAB/Simulink-based proposed RSMLI result is compared newlinewith the traditional inverter result during RES-based MG application. newlineWith the motivation to find a better solution, this study enhances the system performance newlinethrough a detailed mathematical modeling and performance newline