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Zero-volt loop (ZVL) algorithms are known to be able to reduce peak flux linkages and resulting iron losses while keeping the same average torque in average torque control (ATC) of switched reluctance motors (SRMs). However, exploiting ZVLs to minimize the losses has been challenging due to the strongly nonlinear correlations between the torque and the control parameters of ATC caused by extensive...
High-speed machines require structurally robust rotor to withstand high centrifugal forces. Flux switching permanent magnet (FSPM) machines are ideal for high speeds since they have a simple and robust rotor structure. They also utilize permanent magnet (PM) in the stator enabling them to achieve high power density. It is desirable to keep the operating frequency minimized to reduce core losses and...
Among electrical machines with permanent magnets, the class of flux-switching permanent magnet machines has especially good properties with regard to mechanical robustness and cooling. It is a relatively new class of machines with only few industrial applications so far. The design of such machines is thus not well established and known publications on the topic focused on optimizing single objectives...
With the aid of genetic algorithm (GA), global optimization with multiple geometry parameters are feasible in the design of switched flux permanent magnet (SFPM) machine. To investigate the advantages of global optimization over individual one, which has been used extensively for the design of SFPM machines, the comparisons between two approaches are carried out at the fixed copper loss and volume...
A compound-structure permanent-magnet synchronous machine (CS-PMSM) is a solution to realize both the torque and speed control of the internal combustion engine (ICE) for hybrid electric vehicles (HEVs). This article investigates a CS-PMSM that is integrated by two axial flux permanent-magnet synchronous machines (one stator machine (SM) and one double-rotor machine (DRM)). The magnetic coupling between...
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