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This paper proposes and analyzes a new three-phase primary permanent-magnet fault-tolerant vernier (PPMFTV) linear machine. The key of this new machine topology is to adopt the concept of fault-tolerant teeth (FTT) to provide the desired decoupling among phases. The electromagnetic performances of the newly designed machine are analyzed including the flux, configuration, back-EMF, inductance, fault...
This paper proposes a new fault-tolerant linear permanent-magnet (PM) motor, termed as fault-tolerant primary PM (FT-PPM) motor. The proposed motor offers high power density, high efficiency, high fault tolerance and low cost, suitable for maglev transportation applications. Both PMs and windings are set at the steering device of the train, while the only iron stator is fixed between two rails along...
The redundant flux-switching permanent-magnet (R-FSPM) motor is a new class of stator-PM brushless machines with redundancy, incorporating the merits of simple rotor structure, high reliability and high power density. Firstly, its structure characteristic and electromagnetic performance is investigated. Secondly, in order to operate the R-FSPM motor in single-channel (SC) mode for post-fault operation,...
A novel control method is presented for improving the reliability of transformerless cascade STATCOMs operating under various faults. A modified H bridge circuit is proposed, and it could be totally bypassed under various faults while the STATCOM keep working. During the fault transient, by controlling the phase of a STATCOMpsilas output voltage, the DC capacitors could be charged or discharged to...
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