Abstract
Received:11 november 2020; Accepted: 27 December 2020; Published online: 05 April 2021
 Abstract: Drones are used in agriculture and external control, utilizing cameras, various sensors, and autonomous flight functions. However, it is difficult to fly for a long time because of flying with heavy equipment. Therefore, it is necessary to increase the flight time through lightening of the drone itself and efficient control of the BLDC motor. That is, it is necessary to improve the motor itself, which accounts for most of the energy consumption in drone flight. Stator fabrication of existing BLDC motors is done by winding copper wires through individual processes on the stator core through an automated process. However, in the case of an ultra-small BLDC motor, the stator core has a small size and is manufactured using a thin-diameter copper conductor, and thus has a lot of problems in the automation process. Therefore, in this paper, the multi-division coupling structure method of individual teeth of the stator was applied through a new type of BLDC motor stator design. That is, the cartridge type BLDC motor stator was applied to improve and reduce the BLDC motor stator method. Through this, the performance limit of the BLDC motor was improved by combining individual teeth with multiple cartridges. The cartridge type BLDC motor is manufactured by stacking several cartridges on each tooth. Therefore, various performances can be produced according to the connection state of the cartridges
Highlights
Mission drones used for agriculture and external control are increasing, utilizing cameras, various sensors, and autonomous flight functions
If a drone crashes due to motor damage that occurs during a drone flight, financial damages occur enormously, so there is an urgent need to prepare countermeasures and develop related technologies[2,3]
Stator fabrication of existing BLDC motors is done by winding copper wires through individual processes on the stator core through an automated process
Summary
Mission drones used for agriculture and external control are increasing, utilizing cameras, various sensors, and autonomous flight functions. Technology development has been applied to increase the flight time as much as possible through lightening of the drone itself and efficient control of the BLDC motor. The stator core material and the copper conductor are materials that do not change in most motor manufactures, and must be solved to improve motor performance. By applying the method designed and developed in this paper, it is possible to conveniently create a cartridge-coupled stator manufacturing method like assembling a LEGO block. Since the cartridge is variously combined, it is easy to change the number of poles of a motor and the number of copper windings of a single tooth, so it can be applied to various products using a single platform
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
