... magnetomotive force (MMF), air gap permeance and PM excitation (McFarland et al., 2015). The fixed parameters in the FSPM machine design are given in Table 1 , whose parameters are taken from the reference (Du, 2016). If these parameters are fixed, the differences in electromagnetic torque...

... permanent magnet machines Lorentz force Electromagnetic torque Permanent magnet Fictitious current loops PM surface-mounted arrangement PM flux concentrating arrangement PM axial magnetization arrangement In recent years, other classification criteria have been adopted...

... the harmonic contents of the electromagnetic torque. Finally, the validity of the analytical method will be verified by developing three-dimensional finite element models. Findings It is demonstrated that by using the proposed rotor structure, the torque ripple has been reduced to a satisfactory level...

... electromagnetic torque value. The sensitivity of the cogging torque profile because of changes of the stator pole design inside the prescribed constraints is apparent. The stator poles of the reference motor have an arc length of 85° and pole shoe thickness of 6 mm. The newly shaped stator poles have an arc...

... and to estimate the electromagnetic torque for both machines. Finally, the AFSRM was thoroughly examined by analyzing the impact of some geometric parameters on its performance. Findings The comparison of the RFSRM and AFSRM at equivalent active surfaces showed that the obtained axial machine is more compact...

...@gmail.com 06 01 2017 20 04 2017 13 06 2017 © Emerald Publishing Limited 2018 Emerald Publishing Limited Licensed re-use rights only Permanent magnet machine Cogging torque Conformal mapping (CM) Electromagnetic torque Halbach magnetization Parallel magnetization...

... Electromagnetic torque Finite element analysis Von Mises strain/stress Comparative study Torque Magnetic measurement Permanent magnet machines are inherently efficient and hence suitable candidates to electric and hybrid propulsion systems. However, with their armature distributed windings...

... machine operation, there has to be a rotating magnetic field, which can be represented as following: Equation 1 with w angular speed of the energy source. © Emerald Group Publishing Limited 2012 Cogging torque Electromagnetic torque Parallel flux switching Superposition...

... (Demenko, 2000). Electromagnetic torque is calculated on the basis of the virtual work principle. According to this principle, electromagnetic torque is equal to the magnetic energy derivative versus the virtual moving, i.e.: Equation 6 Substituting , becomes: Equation 7 The matrix S...

...Dariusz Spalek Deals with the problem of the electromagnetic torque calculation in the case of either nonuniformity of the air‐gap or eccentricity of the rotor. The electromagnetic field distributions have been evaluated for drag‐cup motors. An analytical model has been introduced for linear motor...