Abstract
This paper describes the concept of a multilayer brushless DC motor which is suitable for use on unmanned aerial vehicles (UAVs) and capable of carrying a heavy payload. The paper deals with a unique multilayer structure, using three standard stators placed in parallel with a single rotor body, to increase the torque even under low-speed conditions. In this solution, nine inner windings can use different star/delta interconnections to optimize the performance of the BLDC motor on demand. The proposed multilayer BLDC motor solution utilizes the main advantages of BLDC motors, ensuring highly reliable operation, and thus enabling a BLDC motor to be applied to UAVs. This paper gives an overview of the design, assumes an extension with an electronic inner winding switching capability, and provides practical details about realization, testing, and experimental verification. Practical measurements and obtained data are utilized to confirm the approach.
Highlights
Brushless direct current (BLDC) motors have become popular in a wide range of applications [1], including unmanned aerial vehicles (UAVs)
Since the experimental setup suffered from an initial inertial load in the form of the rotor and clutch of results the dynamometer, while the BLDC motor control was performed on
Since the experimental setup suffered from an initial inertial load in the form of the rotor and clutch of the dynamometer, while the BLDC motor control was performed on
Summary
Brushless direct current (BLDC) motors have become popular in a wide range of applications [1], including unmanned aerial vehicles (UAVs). The proposed solution is unlikely to increase the number of slots/magnets without increasing the diameter of the motor, but it uses three standard single-layer stators with their original size placed in parallel with a single three-layer rotor that is a common body of all of them This approach increases the motor power N times for N-layer construction while keeping the moment of inertia low. The functional design of the proposed solution uses three layers of stator/rotor parts placed above each other, enabling the performance of the motor based on different winding interconnections to be studied closely.
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