Accepted Papers

Reduction of Energy Waste by Reducing Ripple Flux & Torque in BLDC Motors

Amirhossein Khosravipour, Phd Electrical Engineering, Head of SRU Electrical Maintenance, Ilam Petrochemical Complex Co, Ilam, 69361-17189, Iran, Department of Electrical Engineering, Islamic Azad University Kermanshah Branch, Kermanshah, Iran


As the name implies, BL motors do not use any coal for commutation. In order to achieve a fast torque response, the direct torque control (DTC) method can be used for BL motors, but in this method, due to the presence of hysteresis controllers and a limited number of vectors and control zones, torque and flux ripple are very high. It is a lot. One solution to these problems is to use more areas to control the flux and torque of BLDC motors. The purpose of this paper is to provide a solution to reduce energy loss and improve the performance of this type of motor with a 4-switch inverter. Reducing the complexity of the control algorithm, reducing the interface circuits and pulse generation circuits are some of the advantages of using 4-switch inverters. The use of BLDC motors in the industry is very popular due to outstanding features such as high speed control, high efficiency, etc. These engines are used in applications such as home appliances, spacecraft, vehicles, the pharmaceutical industry and industrial automation.


BL motor efficiency, improved DTC control, flux and torque.