Research

Parallel and flux forced windings in discontinuous machines


Reference:

Proverbs, J., Cox, T. and Eastham, J. F., 2011. Parallel and flux forced windings in discontinuous machines. In: 2011 IEEE International Electric Machines and Drives Conference, IEMDC 2011. Piscataway, NJ: IEEE Computer Society, pp. 527-532.

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Official URL:

http://dx.doi.org/10.1109/IEMDC.2011.5994653

Abstract

Linear Induction Motors commonly have the coils of each phase connected in series. The effect of this connection type is that equal currents flow throughout the phase winding, whilst the voltage across coil groups connected in series may vary significantly. As flux is proportional to voltage, the air gap flux may also significantly vary over the length of the machine. This can be an issue particularly where a conductive plate is traveling between a series of discontinuous machines at high speed, for example in electromagnetic launch systems. The plate entry into each discontinuous machine can cause significant drops in flux with a consequent large variation in thrust. With a machine using phase groups connected in parallel, the voltage is now forced whilst the current is variant. This has the effect of maintaining the air gap flux on entry and so producing a more consistent force profile, a significant benefit for high speed launch applications.

Details

Item Type Book Sections
CreatorsProverbs, J., Cox, T. and Eastham, J. F.
DOI10.1109/IEMDC.2011.5994653
DepartmentsFaculty of Engineering & Design > Electronic & Electrical Engineering
RefereedNo
StatusPublished
ID Code26167
Additional Information2011 IEEE International Electric Machines and Drives Conference, IEMDC 2011. 15-18 May 2011. Niagara Falls, ON, Canada.

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