The paper proposes a methodology for reliable design and maintenance of wind turbine rotor blades using a condition monitoring approach and a damage tolerance index coupling the material and structure. By improving the understanding of material properties that control damage propagation it will be possible to combine damage tolerant structural design, monitoring systems, inspection techniques a...

Electric machines with hybrid excitation have increased torque density while maintaining a wide range of speed control. This article presents the results optimal design synchronous homopolar generator (SHG) ferrite magnets on rotor and winding stator for passenger cars. The use makes it possible to surface more efficiently, which in turn increases energy efficiency reduces dimensions generator....

In this thesis focus is on the electromagnetic design of a synchronous machine suited for a belt driven alternator and starter (BAS) in a micro hybridisation of a mid size passenger car. The BAS needs to provide a high cranking torque to start the combustion engine, especially in a cool condition where the requirements is highest. Beside the high cranking torque is it desirable to have a high p...

Synchronous reluctance motors, despite their cost-effective types and wide range of speed, generally have a considerable torque ripple due to changes in magnetic resistance between the flux barriers stator teeth. Given numerous possible rotor combinations with different forms barriers, designing an optimal synchronous motor without use mathematical equations clear algorithm will be very time-co...

By applying the halbach arrangement, an integrated magnetic bearing structure can be designed that secures space inside rotor core as a for inserting bearing. In this case, since is present rotor, flux controlling position affected by field of permanent magnet and rotating phase winding stator. At time, in specific combination number pole slots, arrangement windings stator facing teeth appears ...

This paper proposes a sub-harmonic-based brushless wound rotor synchronous machine (WRSM) topology. The proposed topology involves two three-phase stator windings with different number of turns. Both are linked in parallel and provided current from single inverter. One these is four-pole winding while the second two-pole winding. arrangement generates magneto-motive force (MMF) air-gap comprisi...

<p>Condition monitoring and on-line detection have attracted several researchers in order to carry out an efficient diagnosis of machine failures. Therefore, the early stage avoids system breakdown reduce maintenance cost. This paper presents a new diagnosic approach detect broken bars end ring faults for squirrel cage induction based on fast Fourier transform analysis applied signature a...

The design and analysis of synchronous reluctance motor (SynRM) with a distributed type winding is an alternative to replace the permanent magnet motors (PMSM), which commonly used in electric vehicle applications. use SynRM eliminates need for magnets (PMs), reducing dependence on rare earth materials potentially lowering costs. In this paper, there are two approaches: new approach step-skewin...

This article presents a novel doubly salient permanent magnet (DSPM) machine with enhanced torque performance. The key is that an assistive magnetic flux produced by using two sets of slot PMs inserted into the openings, which can effectively improve production. Besides, complementary path built dual rotors 180° angle shift to reduce leakage flux, suppress ripple. In this article, proposed desi...

This paper proposes a novel brushless synchronous machine topology that utilizes stator sub-harmonic magnetomotive force (MMF) for desirable operation. The MMF component is used in this one fourth of the fundamental component, whereas, previous practices, it was half. To achieve operation, uses unique winding configuration two sets balanced 3-phase wound 3 layers. For rotor, additional placed t...