Analisis Performa Motor BLDC 250 dan 350 Watt Menggunakan Prony Brake Dynamometer

Abstract

One promising solution to address the energy crisis is the use of electric vehicles, as they do not require fossil fuels to operate. Current research on electric vehicles focuses on increasing travel range and achieving high efficiency. One of the main components that significantly affects the efficiency level of electric vehicles is the electric motor, which serves as the primary drive unit. In this study, we analyze the performance of two types of electric motors 250 Watt and 350 Watt BLDC in-wheel motors used in energy efficient urban electric cars developed by the TITEN electric vehicle research team at the University of Jember, using a Prony Brake Dynamometer test apparatus. This comparison aims to examine how variations in loading and motor speed affect power output and efficiency differences between the two motors. We conducted tests using three variations of load (turnbuckle adjustment) and motor speeds ranging from 50 to 290 RPM. Under load 1, the 250 Watt motor reaches a maximum efficiency of 56.91%, while the 350 Watt motor reaches 62.45%. Under load 2, the 250 Watt motor achieves a peak efficiency of 49.80%, compared to 55.05% for the 350 Watt motor. Under load 3, the 250 Watt motor records a maximum efficiency of 44.12%, while the 350 Watt motor reaches 48.75%. The 350 Watt BLDC motor generally demonstrates higher efficiency compared to the 250 Watt BLDC motor across nearly the entire range of RPM and loading conditions, reaching a maximum efficiency of 62.45% at 190 RPM under load 1. However, the 250 Watt BLDC motor outperforms the 350 Watt motor in terms of efficiency under load 1 at 70 RPM, achieving an efficiency of 50.19%