Development of improved controllers for custom power devices to enhance the power quality in distribution systems with renewable energy sources

Abstract

With the development of sensitive equipment for industrial newlineapplications, the emphasis on the quality of power supplied will be a challenging newlineissue in the distribution system. The severe and most frequent power quality newlinedisturbances in the distribution system are voltage sag, swell, and harmonics. newlineThese issues create a loss of production, manufacturing interruptions, major newlineeconomic loss, product damage, wasted energy, and decreased equipment life. newlineTo improve the power MPPT based solar panels advanced PI controlling newlinetechniques have been implemented recently to improve the power quality in newlinedistribution systems with renewable energy source techniques should be newlineimplemented such that at power quality disturbance conditions, the action of PI newlinecontrollers should be optimized, which will reduce the operation cost and newlinelifetime of the controllers also. This thesis proposes an Enhanced Whale newlineOptimization (EWO) based PID controller in the first stage of the research work newlineand the power quality parameters are analyzed through simulation of different newlineline fault conditions. Custom power devices DSTATCOM and DVR are included newlinein the load side to eliminate the oscillation and the results are observed in terms newlineof grid voltage, grid current, load current, load voltage, Total Harmonic newlineDistortion (THD), and Integral Time Absolute Error (ITAE). In the second stage, newlinea DC to AC inverter using a FUZZY controller PWM generation is implemented newlineand a thorough review of the primary control of interfacing converters for power newlinequality compensation is presented, with Hybrid Renewable Energy Sources. newlineThe secondary control with system-level coordination and optimization for newlineharmonics and unbalanced compensation are also presented for multiple newlineinterfacing converters. In the third stage, a DC to AC inverter using an ANFIS newlinecontroller-based pulse-generating process was implemented newline