This study investigates how to improve the fault tolerance or availability of an electrical drive containing a three‐phase 12 stator teeth/10 rotor poles (12/10) the flux‐switching permanent magnet machine. In this respect, space‐vector modulation and space‐phasor modulation will be analysed in this type of machine for control scheme design under three‐phase operation. While for safety critical applications, availability requires that during faults, such as loss of one inverter phase leg or open circuit of one machine phase winding, the electrical drive system remains partly operational. Therefore, initial research is given in this study on the implementation of control algorithms that drives the machine under normal condition and preserves the electromagnetic torque under phase open‐circuit faults.

An essential requirement for a long-stroke linear motion system is a low-cost and robust track. To allow the implementation of a linear motor topology in such application, passive tracks, consisting no rare-earth material, are recommended to reduce the price. This paper presents a comparison between two linear motor topologies with permanent magnet (PM)-less tracks: e.g., linear induction motor (LIM) and linear flux-switching permanent magnet motor (LFSM). These motors are benchmarked to a linear permanent magnet synchronous motor (LSM), which merits itself for high force density. The LIM and the LFSM are optimized for maximized continuous force while considering the same footprint as the LSM. The optimization is based on a multiphysical model containing an analytical representation of the magnetic field distribution, force production, power losses, and thermal the behavior of both structures. The obtained parameters are used to compare different configurations of both motors to the LSM. The results of the comparison show that at the price of higher losses, both topologies have comparable thrust force to the LSM.

Variable flux reluctance machines (VFRMs) are viable candidates for automotive applications. This paper investigates the field weakening capability of a 12/10 VFRM. Starting with voltage and toque equations, the paper reveals the relationship between torque-speed characteristics and the current arrangement (slot division) of both DC-field and armature windings. The method for expanding the working envelope by tuning DC or AC currents is discussed for different slot divisions. The results are validated by 2D finite element analysis.

In this paper, an extended hybrid analytical modelling (HAM) technique is presented and applied to a variable flux reluctance machine (VFRM). The saturation phenomena in this machine is accounted by an iterative algorithm, while motion-integrated boundary conditions allow the torque estimation at different positions. The obtained results are further verified and have good agreement with finite element analysis.

In this paper, a Linear Flux-Switching Permanent Magnet Machine (LFSPMM) and Rotating six-phases Flux-Switching Permanent Magnet Machine (RFSPMM) are modeled and compared using FEM. The results from these models are discussed and compared with measurements, regarding shape and amplitude of the resulting back-EMF waveforms. Furthermore, by using current decoupling control algorithm, the second order current harmonics are regulated to reduce torque or force ripples for rotating or linear machines, respectively.