Electronic Battery Switch for UAV BLDC Motor
Carev V. Alloyarov K. Kaychenov A. Kaliaskarov N.
2024Praise Worthy Prize S.r.l
International Review of Aerospace Engineering
2024#17Issue 112 - 18 pp.
The development of Unmanned Aerial Vehicles (UAV) is impossible without optimizing Brushless Direct Current (BLDC) systems and increasing their specific power. To enhance power, it is logical to raise the operating voltage while reducing the current and heat dissipation of the stator. However, the impedance of the stator windings and their inductance restrict the use of higher operating voltage. High-voltage BLDC motors struggle to operate efficiently at low speeds due to excessively short Pulse-Width Modulation (PWM) pulses resulting in significant thermal losses on the output FET transistors. Current solutions, such as electromechanical switches designed for low operating current or based on a single cascade, have low efficiency in practice. This article presents the design of a new high power electronic battery switch that enables the efficient utilization of high voltage BLDC motors at any speed in dynamic mode. This leads to a notable increase in the operating time of the BLDC motor from a single battery charge without the need for extra batteries or recharging existing ones. Given that modern Li-Pol batteries are costly and have a limited charge-discharge cycle lifespan, electronic battery switches allow for their integration into finished products to extend battery life and reduce the final cost of BLDC systems. Specifically, it allows the UAV to stay airborne for much longer or the use of batteries with lower capacity and weight.
Batteries , BEMF , BLDC , Brushless DC , Electronic Switch , Motor
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Department of Measurement, Faculty of Electrical Engineering, Czech Technical University in Prague, Prague, 166 27, Czech Republic
Department of Automatic Equipment and Computer Science, Murmansk Arctic University, Kapitana Egorova str., 15, Murmansk, 183038, Russian Federation
Department of Technology of Communication Systems, Abylkas Saginov Karaganda Technical University, 10002, Kazakhstan
Department of Telecommunication, VSB-Technical University Ostrava, Ostrava, 708 00, Czech Republic
Department of Measurement
Department of Automatic Equipment and Computer Science
Department of Technology of Communication Systems
Department of Telecommunication
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