Abstract-This paper presents design and analysis performed for a dual winding electric machine. Windings of the machine are concentrated type so that electrical and magnetic isolation is maintained. For this reason, the proposed structure could be a reasonable candidate for fault tolerant applications. As required by some applications (electric accessory drive system (EADS) for hybrid electric vehicles), simultaneous motoring and generating operations can be implemented in a single housing of electric machine. Design considerations of the proposed electric machine are outlined in the paper. Also a comparison between distributed winding topology and concentrated winding topologies is performed. Finally experimental results discussed.
In this study, modeling MCS RM (Mutually Couple S witched Reluctance Machine) which is produced through modifications in wrap around structure of S RM with Feed Forward Back Propagation ANN (Artificial Neural Network) is performed. Data obtained from angle, current, flux and torque components obtained through FEM analysis of MCS RM has been used in ANN training.In the course of literature research, no use of ANN in MCSRM modeling is detected and it is seen that algorithms consisting of analytical methods are preferred. It is established that, in modeling studies which are based on such algorithms, the structure consists of thousands of loops and that these loops extend time needed for simulation; besides, it is seen that installation of loops in modeling become rather di fficult. The data obtained from dynamic analysis of the model are compared with the data obtained from motor tests in the literature and it is witnessed that the model produces similar torques in similar voltage and current forms.
This paper presents a new accessory drive system for hybrid electric vehicles (HEVs). This new concept involves a dual winding electric machine with simultaneous motor and generator functions. The electric machine provides power for all accessory loads such as the steering pump, compressors and 12 V loads. When the engine is off, the electric machine starts its motoring action and provides mechanical power to the accessory loads. Simultaneously, the generator windings provide power for the 12 V loads. The proposed structure could be a viable choice for fault-tolerant applications because of the concentrated winding type that maintains electrical and magnetic isolation. Design considerations of the proposed electric machine are outlined in the paper. The distributed winding topology and concentrated winding topologies are also compared. Analytical proof of magnetic decoupling is presented and experimentally verified.
E. Mese et al.
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