Analysis And Optimization Of A Single-Phase Full-Wave Uncontrolled Rectifier For Driving A Three-Phase AC Motor In Engineering Applications

Abstract

Electric motors, as key electromagnetic devices, play a pivotal role in converting electrical energy into mechanical energy, enabling diverse industrial and domestic applications. They are integral components in powering pump impellers, fans, blowers, compressors, material handling systems, and household appliances such as mixers, electric drills, and fans. In industrial contexts, electric motors are often termed the "workhorse of industry," consuming approximately 70% of total electrical loads. This study focuses on the performance analysis and optimization of a three-phase electric motor to derive power, torque, and efficiency characteristics. The experimental setup includes a three-phase electric motor connected to a lamp-based generator load of up to 2500 watts, regulated incrementally from 0 watts to 250 watts. The primary objective is to evaluate variations in torque, power, and speed under controlled conditions. The methodology involves systematically preparing the testing equipment, conducting a five-minute engine warm-up, gradually increasing the regulator load, recording experimental data, and processing the results for performance analysis. Experimental findings reveal that the maximum power of 1032.08 watts is achieved at 2846 RPM, maximum torque of 3.464 Nm at 2846 RPM, and maximum efficiency of 72.68% at 2941 RPM. Achieving high motor efficiency necessitates ensuring that input voltage aligns with the motor's maximum voltage capacity. These insights contribute significantly to enhancing motor performance and optimizing its operation in both industrial and domestic applications, emphasizing the importance of efficient energy utilization in engineering systems.