With the development of reliability theory, people realized that “absolutely reliable” machines could not be made. its incomparable advantages, high-speed permanent-magnet brushless DC motor is usually used in symmetrical structure operation working systems, which at present are widely aerospace and other fields. The manufacturing process involves a strict processing, but work failure still occ...

In this paper a fast analytical algorithm for design a surface-mounted PM Brushless DC motor (SMPM-BLDC) for variable-speed application based on electromagnetic field analysis and RSM optimization algorithm is discussed. To achieve the desired performance, the physical dimensions of the proposed SMPM-BLDC motor subject to minimal ripple torque utilizing RSM optimization algorithm were optimized...

Abstract The permanent magnet brushless DC propulsion motor is highly efficient and energy-saving can be widely used in the electric system of ships. Therefore, taking marine seven-phase as main research object, basic structure analyzed, states conduction, six-phase five-phase conduction modes are listed, mathematical models three different studied. Finally, current fluctuation mode smaller thr...

This paper presents a subharmonic-based brushless wound rotor synchronous machine (BL-WRSM) topology with permanent magnet-assisted (PMA) and consequent-pole (CP) structures to achieve better torque characteristics as compared the conventional WRSM. The proposed topologies use high-efficient subharmonic field excitation technique operation lower volume of magnet (PM) average, starting, maximum,...

Various electric machines can be the candidate for electric vehicles applications, including induction machines, permanent magnet synchronous machines, switched reluctance machines, etc. Another class of machine, which has been relatively ignored, is synchronous reluctance machines. In order to enhance and increase torque density of pure synchronous reluctance machines, the low cost permanent m...

This paper presents a two-dimensional analytical model for brushless double-rotor flux-switching permanent magnet machines (BDRPFSPMM) with yokeless stator recognized as type of partitioned-structure that is an appropriate machine to be employed the electric motor in industry. The most salient advantages proposed are low iron loss due volume and high space slot winding. radial tangential compon...