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This paper compares the electromagnetic performance of stator DC current excited vernier reluctance machines (DC-VRMs) with different Field winding configurations. Using the theoretical analysis and finite element analysis (FEA), the back-EMF, and torque capability, etc. are compared. The results show that the field winding arrangement has a great and various effect on the machine torque capability,...
The recent novel DC biased sinusoidal current reluctance machines (DC-biased VRMs) are similar to switched reluctance machines (SRMs) in terms of structure, as they both adopt the doubly salient structure and concentrated windings. However, the special characteristic of DC-biased VRMs is that their phase currents have both DC current and AC current. Therefore, it can be inferred that the vibration...
DC-biased sinusoidal current vernier reluctance machines (DC-biased-VRMs) are with a doubly salient structure, and their phase currents contain an alternating current (AC) component and a direct current (DC) component. Hence, their main features are one set of concentrated windings compared with variable flux reluctance machines (VFRMs), low vibration and noise due to smooth current, compared with...
This paper proposes vernier reluctance dual-stator machines with semi-closed slot. The structure of vernier reluctance dual-stator machines with semi-closed slot is firstly given, followed by a comprehensive comparison with the conventional structure in aspects of no load flux linkage, cogging torque and torque. The effect of inner stator shift on the performance of vernier reluctance dual-stator...
This paper analyzes the conventional windings, detached windings and alternative windings for vernier reluctance dual-stator axial flux machines. The connection of winding configurations is firstly given, followed by a comprehensive comparison in aspects of no load flux linkage, cogging torque, rotor unbalanced axial force, torque, torque ripple and iron loss.
Stator DC-excited vernier reluctance machines (DC-VRMs) are vernier reluctance machines equiped with additional DC field winding in stator to generate the exciting field, a rotating field similar to synchronous reluctance machines (SynRMs). This paper compares the electromagnetic performance of two non-PM reluctacne machines including DC-VRMs and SynRMs. First, the basic operation principle of DC-VRMs...
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