This study presents a novel switched reluctance machine (SRM) with modular E-core stators and multi-layer common rotors for high reliability applications. The stator is composed of six independent modular E-cores with the windings wound around the yoke of the E-cores. The rotor consists of three magnetically independent common rotors which are place in the same shaft without any angular shift. The equivalent magnetic circuit (EMC) models of this new SRM at the aligned and unaligned positions are described. To evaluate the motor performance, two types of analysis, namely, approximate simplified two-dimensional (2D) model and 3D model finite-element analysis (FEA) have been utilised. The 2D FEA static and dynamic results are compared with 3D FEA results. Furthermore, comparisons between the novel modular SRM and a conventional 6/4 SRM are made. Finally, a prototype of this modular SRM has been fabricated and tested in the laboratory. Comparison between FEA and EMC analysis for flux linkage are made and compared with measured characteristics. The simulated and measured phase currents and average torque are also presented and compared to verify the analytical and simulation results.
This study proposes an improved decoupled model of mutually coupled dual-channel switched reluctance machine (DCSRM) based on the equivalent inductance and flux linkage characteristics that consider magnetic saturation in dualchannel operation (DCO) mode. A three-dimensional finite-element analysis (FEA) is used to calculate the static phase equivalent inductance of DCSRM for the simultaneous two-phase excitation with consideration of saturation. And an indirect experimental test is performed to measure the equivalent flux linkage under the simultaneous two-phase excitation and compared with the FEA results. In this improved decoupled model, the phase equivalent inductances and flux linkages in each channel are independent to each other and separately expressed as a function of rotor position and their own phase current. The static magnetic characteristics, details of modelling procedure and performances prediction for the DCSRM under DCO mode without and with consideration of saturation are compared. Finally, an experimental setup for a 12/8 DCSRM drive system based on dSPACE is built and the simulation and experimental results are compared, which verifies high accuracy of this improved modelling method.
The following article published in IET Electric Power Applications, Ding, Wen; Liu, Ling: Lou, Jianyong: 'Design and control of a high‐speed switched reluctance machine with conical magnetic bearings for aircraft application', IET IET Electric Power Applications, 2013, Volume 7, Issue 3, doi: 10.1049/iet‐epa.2012.0319 has been retracted. Following a rigorous and considered review of this content, this paper has been found to be in violation of the IET’s Policy in Relation to Plagiarism, Infringement of Copyright and Infringement of Moral Rights and Submission to Multiple Publications.
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