A Novel Hybrid DC–CC–Based Reactive Power Compensation Scheme to Improve Power Quality of A Electric Grid Considering the Efficiency of Asynchronous Induction Motors

Electric motors, especially large-capacity Induction Motors (IMs), are the main load components and consume most electricity output from industrial zones and factories. As a result, optimizing the efficiency and operation of such loads will significantly improve the power quality and reduce power losses on the grid. A crucial control scheme is to propose an effective way to decline Power Loss (PL) against an overtime-changing network voltage. The present paper introduces a new optimal solution to reduce the PL of industrial production lines embedded in many three-phase asynchronous motors. This study evaluates the influence of voltage fluctuations on three-phase AC motors to propose and design a new-generation voltage regulation system. Such a system consists of distributed reactive power compensation (DC) devices located at the load nodes, and they are monitored and regulated by a common Central Controller (CC). This novel hybrid integration can optimize the production lines’ operation mode and the power transmission’s efficiency. This work also presents a specific series of steps to address an adequate compensation of reactive power for each induction machine, thereby enhancing the quality of voltage and power at the loads, reducing the loss of active power, and extending the lifespan of the equipment. Furthermore, this work implemented and represented several simulations in Matlab/Simulink and experiments on a practical power system to verify the feasibility of the studied hybrid DC-CC approach. © 2023, Seventh Sense Research Group. All rights reserved.