Investigation of the dq-Equivalent Model for Performance Prediction of Flux-Switching Synchronous Motors With Segmented Rotors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A. Zulu, B. C. Mecrow, and M. Armstrong 2393 Modeling and Parametric Design of Permanent-Magnet AC Machines Using Computationally Efficient Finite-Element Analysis . . . . . . . . . . . . . . . . ...

Abstract This paper describes various rotor geometries for the axial end region of permanent magnet synchronous machines (PMSMs) with aim reducing magnetic stator flux component. is achieved by considering degrees freedom three-dimensional geometry provided state-of-the-art manufacturing technologies. The comparison approaches against conventional arrangements discussed based on effects in and ...

Using the method of separate variables, the three-dimensional magnet field solution expressed in Fourier’s expansion for permanent magnet (PM) machines with finite axial magnet length is presented in this paper. From the analytic results obtained, much useful and interesting design information for PM machines in three dimensions may be quantitatively deduced. Design curves of the leakage factor...

In this paper, one of the main cogging torque minimization methods, magnet skew, is examined in detail for Axial Flux Permanent Magnet (AFPM) disc motor. Various magnet skewing methods, types, and effects on the machine performance are also investigated using 3D Finite Element Analysis. The results are compared with a reference AFPM motor, and the improvements on cogging torque component are de...

Axial flux permanent-magnet synchronous machines (PMSMs) are very suitable candidates for the power train of electric vehicles (EVs) due to high power density and high efficiency. This paper researches an axial flux PMSM with radially sliding permanent magnets (PMs) to fulfill field-weakening control. The field weakening principle and the structure of this kind of axial flux PMSM by mechanical ...

Soft magnetic composites (SMCs) have opened up new possibilities for the design of both DC and AC machines. Since SMCs are isotropic, machine topologies such as claw pole machines, transverse flux machines and the like, which have three dimensional flux density patterns have attracted the most attention. Very little effort has gone into improving the performance of conventional AC machines such...

Lifting capacities greater than 41 N/cm2 (60 psi) at 77 K have been achieved using a combination of permanent magnets and high quality melt-textured YBa,Cu,O,-s (YBCO). The key concept of this hybrid superconducting magnetic bearing (HSMB) is the use of strong magnetic repulsion and attraction from permanent magnets to support high loads in conjunction with flux pinning in a type II superconduc...

A category of permanent-magnet-shield (PM-shield) axial-field dual-rotor segmented switched reluctance machines (ADS-SRMs) are presented in this paper. These topologies featured by using the magnetic material to shield flux leakage stator and rotor parts. Besides, deployed magnets weaken saturation iron core, thus increasing main flux. Hence, torque-production capability can be increased effect...