Investigation of a three-phase flux-switching permanent magnet machine for downhole applications

Optimal design of permanent magnet flux switching generator for wind applications via artificial neural network and multi-objective particle swarm optimization hybrid approach

“…Every objective function, in agreement with the formalization of the sizing equations, is assumed depending on these design variables. The particular choice of these parameters as design variables is motivated by their influence on the electromagnetic performance of the PMFS machines, as proved in the literature [24][25][26][27][28][29][30]. In our problem Y & R 4 and f is a vectorial multi-objective function having 4 components (the weight and the cost of the generator, the amplitude of the induced voltage and its THD).…”

“…Moreover a solution for improving PMFSM performance for high speed applications is proposed in [24]. At last in [25] PMFSM for downhole use is presented. Recently, because of its outstanding features, PM flux switching generator is introduced also as a proper candidate for direct drive wind turbine systems.…”

Investigation of start-up conditions on electric submersible pump driven with flux switching motor

“…Therefore, recently, interior permanent magnet motors (IPMs) are used in ESPs for some wells. 1 Also, some studies recommended using flux switching motors on ESPs [10,11].…”

“…The flux switching permanent magnet (FSPM) motors have many advantages. PMs and armature coils are placed on the stator in flux switching motors, which leads to the robustness of the rotor, no need to protect PMs again centrifugal force, reduction in the operation temperature of PMs, and reduction in the armature effect on PMs since the fields of coils are perpendicular to PM fields [11]. Nevertheless, a significant concern is about starting and reaching nominal rotational speed in ESP applications.…”

A novel permanent magnet motor with large axial channels for downhole applications with high-torque requirements

“…Permanent magnet (PM) motors are known for compactness and, therefore, they nowadays are regarded as a viable candidate for downhole applications, especially for the direct-driven systems. Several PM machine topologies have been presented for use in the downhole applications [1]- [4].…”