Brushless Direct Current Motor Design and Analysis

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Yaz M., Çetin E.

COJ Electronics & Communications, vol.2, no.2, 2021 (Peer-Reviewed Journal)


Direct current motors are machines that convert direct current electrical energy into mechanical energy. It is based on the principle of moving with the effect of the magnetic force that occurs in the opposite direction to the permanent magnets in the motor when electric current is applied to the windings inside the motor. Special driver circuits called ESC are used for their operation. It is used in applications where high performance is required thanks to its advantages, low friction, very high efficiency and no wearing parts such as brushes. The disadvantages are that it has to be driven by the driver. Electric vehicles, electrical appliances etc. in this study. It is about the design of the Brushless Direct Current Motor (BLDC), which is frequently used in the fields, and the analysis of the designed system. Brushless direct current motor was designed and implemented, and analysis of brushless direct current motor was made. General features of BLDC motor; the supply voltage is 72 volts, the number of slots is 45, the number of poles is 50, and the windings are star-connected. The analysis of the engine was created to estimate the performance of the engine and generator accurately and completely to be designed, and the design software was made with Motor Solve BLDC. Due to the analysis results, the designed motor is convenient for the production. There are pure-like back EMF, ignorable cogging torque and enough flux linkage to produce torque. Also, three starting angle is researched for the starting torque. Maximum torque is obtained at the 90 degree shift of the magnet angle.