The flux switching motor, a DC motor without magnets or brushes

Pollock, C.; Wallace, Mark A.

doi:10.1109/ias.1999.806009

Cited by 113 publications

(55 citation statements)

References 5 publications

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“…A DC EXCITED flux-switching machine (DCEFSM) is a type of double-salient structured brushless machine with two sets of windings in the stator: the armature winding and the field winding [1], [2], as shown in Fig. 1(a).…”

Section: Introductionmentioning

confidence: 99%

Energy Conversion in DC Excited Flux-Switching Machines

2014

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This paper initiates a study on energy conversion in dc excited flux-switching machines (DCEFSMs) to reveal the torque production mechanism of this type of machines. The flux linkage components and self-and mutual inductances of a single-phase two-rotor-tooth DCEFSM are investigated. Based on the understanding of the relation between these variables and the rotor position, two different switching strategies are implemented to the armature current of this machine. Current-flux linkage loops are sketched for each switching strategy, resulting in different torque expressions. These torque expressions, validated using finite element analysis, show that the DCEFSM is a reluctance machine in which torque is generated due to variation of self-and mutual inductances. In addition, the torque component related to the mutual inductance can be dominant with certain current commutation in the armature winding.

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Section: Introductionmentioning

confidence: 99%

Energy Conversion in DC Excited Flux-Switching Machines

2014

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“…In order to reduce the cost, one of the possible solutions is to replace the PM by FEC. For this reason, some wound field SFMs are proposed for low cost applications [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Design and Characteristic Investigations of 12Slot-8Pole and 12Slot-10Pole Wound Field Three-Phase Switched-Flux Machines

Khan¹,

Sulaiman²,

Omar³

2014

3rd IET International Conference on Clean Energy and Technology (CEAT) 2014

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In this paper, a new wound field salient rotor (WFSalR) switched-flux machine (SFM) with 12 stator poles and 10 rotor poles is designed, investigated, and compared with the same stator but 8 rotor poles WFSalR SFM. The main advantage of these SFMs when compared with induction machines, direct current (DC) machines etc is that, all the active parts such that armature coil and field excitation coil (FEC) are located on the stator while the rotor part consists of only single piece iron. This makes the machine more robust, simple structure and more suitable to be used for high speed applications. Concentrated windings at the stator reduce the copper consumption and also the copper losses. Initially, the general construction of WFSalR SFMs and design specifications are outlined. Then, finite element analysis (FEA) is used to investigate and compare the flux linkage, induced emf, cogging torque, average torque and torque speed characteristics of proposed WFSalR SFMs.

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“…1(a) [10]. It is obvious that both armature coil and DC FEC windings are placed in the stator which overlapped each other.…”

Section: Introductionmentioning

confidence: 99%