Experimental Study of a PMDC Motor by dynamic response testing

This paper studies and investigates of the performance of permanent magnet D.C motors (PMDC motor) as well as determining the parameters of this type of motors at steady state. The study was carried out in two stages. The first stage involved the practical experimental to determine the parameters and characteristics of PMDC motor at steady state while the second stage centered on the simulation of mathematical modeling of this system using Simulink environment in MATLAB. The best significant results show that the computer simulations provide results closely to values of experimental measurements, therefore it can be used to investigate the performance of PMDC motors and their characteristics. In addition, the efficiency of PMDC motor is higher than Electromagnetic D.C motors, also the damping coefficient has a negative effect on characteristics of motor especially at no-load steady state in spite of smallness value. The paper includes the development of a lithium-ion battery pack and a static setup for simulating variable load cases on a PMDC motor.