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Switched reluctance machine (SRM) and flux-switching machine (FSM) with segmental rotors are different in winding patterns and control strategies. The electromagnetic characteristics of the two machines, including magnetic field, static torque, torque ripple, iron loss and efficiency, are compared by means of analytical calculation and finite element method in this paper. The analytical results of...
In this paper, two kinds of control strategies applied to a switched reluctance motor (SRM) with 12/8 teeth configuration have been analyzed based on a three-phase bridge converter. The first strategy is that the three phase SRM windings have to be connected in delta, with a separate diode connected in series with each phase, which is possible to control the voltage and current of each phase independently...
This paper provides a brief summary on various superconducting air-core transformers. The structural optimizations of the high temperature superconducting (HTS) air-core windings and relevant electromagnetic analysis have also been presented to achieve practical prototype design.
As switched reluctance motors (SRM) generally offer a simple and robust design, they are very suitable for an aircraft main engine fuel pump drive which needs to be actuated by fault tolerant drives. Based on analytical comparison the merits and demerits of some different machine topologies including redundancies, a six phase 12/8 fault-tolerant SRM is proposed and designed for fuel pump drive application...
This paper investigates effects of rotor eccentric radial displacements on magnetic field distribution, winding inductances, radial force and torque of BSRM. Magnetic field distributions of BSRM with different displacements of rotor eccentricity are calculated by 2-D finite element analysis. Then inductances of main and radial force windings, radial force and torque can be obtained, respectively....
With the improvement of high temperature superconductor (HTS) practical performance, research and development concerning the applications of HTS transformers have been progressed actively in the world. This work presents a single-phase 10 kVA (220 V/24 V) HTS transformer prototype design to validate HTS for practical transformer applications.
With the improvement of high temperature superconductor (HTS) practical performance, research and development with regard to practical applications of HTS transformers have been progressed actively in the world. The current focus on the applied superconducting technology for HTS transformers has been moving to the industrial preparations from the laboratory research stage, and the technology has been...
With the improvement of high temperature superconductor (HTS) practical performance, research and development concerning the applications of HTS transformers have been progressed actively in the world. This work presents a single-phase 10 kVA (220 V/24 V) HTS transformer prototype design to validate HTS for practical transformer applications. The physical designs of the HTS transformer and 2-D electromagnetic...
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