Electric motor-generators for unmanned aerial vehicles

Abstract

Permanent magnets (PM) are used in the new multi-pole electric generators. Direct connection without a reducer greatly simplifies the design and provides a long life and low weight. To improve the technical parameters of electric generators, are used PM based on rare-earth Nd-Fe-B magnets. The absence of sliding electrical contacts significantly increases life and reliability in comparison with electric generators of direct current and synchronous generators. Special attention is given to high specific indicators for the developed power per unit of weight. Additional computer simulation has been made. The results of calculating the magnetic field and moments for models of electric motors with permanent magnets are considered. It is shown that the configuration of the magnetic system has a significant effect on the electrical characteristics of the electric generator.

Gallium Nitride Power Electronics for Aerospace - Modelling and Simulation

“…Parameters for GaN transistors and circuit solution are chosen and verified by simulations. The author has a serial works for primary power supplies; power supply efficiency; GaN power devices, switching power supply design, power supply efficiency [19,20].…”

Converting a Fixed-Wing Internal Combustion Engine RPAS into an Electric Lithium-Ion Battery-Driven RPAS

“…After this review of the state-of-the-art of electric UAVs, it is realized that one of the solutions, that the literature shows as the most promising in terms of flight autonomy, is the use of hydrogen and fuel cells in electric RPASs [62][63][64][65]. As a first step for this ambitious ultimate goal, a fixed-wing electric RPA was developed.…”