TY - JOUR ID - 743 TI - Optimal Sensorless Four Switch Direct Power Control of BLDC Motor JO - Journal of Operation and Automation in Power Engineering JA - JOAPE LA - en SN - 2322-4576 AU - Hajiaghasi, S. AU - Rafiee, Z. AU - Salemnia, A. AU - Aghamohammadi, M. R. AD - Department of Electrical Engineering, Shahid Beheshti University, Tehran, Iran. Y1 - 2019 PY - 2019 VL - 7 IS - 1 SP - 78 EP - 89 KW - Brushless DC motor KW - Direct power control KW - Four-switch inverter KW - Sensorless KW - Torque ripple DO - 10.22098/joape.2019.4859.1374 N2 - Brushless DC (BLDC) motors are used in a wide range of applications due to their high efficiency and high power density. In this paper, sensorless four-switch direct power control (DPC) method with the sector to sector commutations ripple minimization for BLDC motor control is proposed. The main features of the proposed DPC method are: (1) fast dynamic response (2) easy implementation (3) use of power feedback for motor control that is much easy to implement (4) eliminating the torque dips during sector-to sector commutations. For controlling the motor speed, a position sensorless method is used enhancing drive reliability. For reference speed tracking, a PI control is also designed and tuned based on imperialist competition algorithm (ICA) that reduces reference tracking error. The feasibility of the proposed control method is developed and analyzed by MATLAB/SIMULINK®. Simulation results prove high performance exhibited by the proposed DPC strategy. UR - https://joape.uma.ac.ir/article_743.html L1 - https://joape.uma.ac.ir/article_743_217f220d7d098f0c4504c065ce78cfd8.pdf ER -