Performance Comparison Study Between DC Shunt Motor No. 110 and Three-Phase Asynchronous Slip Ring Motor No. 520

Electric motors come in various types, including AC and DC motors. Each type of electric motor exhibits different performance characteristics, which significantly impact their application. This study aims to examine the performances of the DC Shunt motor and the three-phase asynchronous motor with slip rings by calculating parameters such as power, torque, and efficiency under loaded conditions. These calculations serve as a reference for selecting the appropriate motor to drive a Bow Thruster. In the DC shunt motor experiments, a DC voltage of 220 V was utilized, while for the three-phase asynchronous motor with slip rings, an AC voltage of 380 V was used. The results showed that the DC shunt motor produced a maximum output power of 297 W with an input power of 354.4 W, achieving a torque of 1.045 Nm and an efficiency of 86% at a motor rotation speed of 2715 rpm. On the other hand, the three-phase asynchronous motor exhibited an output power of 296 W with an input power of 318 W, generating a torque of 1.041 Nm and an efficiency of 93% at a motor rotation speed of 2720 rpm. The analysis revealed a relationship between several parameters and the motor load's impact on efficiency. It was observed that the three-phase asynchronous motor with slip rings demonstrated the highest efficiency and torque under the same load. Therefore, for the selection of the thruster drive, the recommended choice is the three-phase asynchronous motor with slip rings due to its higher torque value and greater efficiency compared to the DC shunt motor under equivalent loads.