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By A. B Barzam

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G. A. Viorel, Variable reluctance electric machines, Shaker Verlag, Aachen, 2001, Chapter 6. © 2006 by Taylor & Francis Group, LLC Principles of Electric Generators 2-29 19. L. Luo, S. Huang, S. A. Lipo, Design and experiments of novel axial flux circumferentially current PM (AFCC) machine with radial airgap, Record of IEEE-IAS-2001. 20. I. A. Nasar, Linear Electric Actuators and Generators, Cambridge University Press, London; New York, 1997. 21. J. Wang, W. W. Jewell, and D. Howe, Design and experimental characterisation of a linear reciprocating generator, Proc.

7), and TRH and TCH are notably smaller. As TCH is largest, reheat turbines tend to be slower than nonreheat turbines. 10 clearly shows that the steam turbine has a straightforward response to GV opening. 3, and TCH = TCO = 0. In enhanced steam turbine models involving various details, such as IV, more rigorous representation counting for the (fast) pressure difference across the valve may be required to better model various intricate transient phenomena. 11 Speed relay: (a) configuration and (b) transfer function.

So, it is only the back-to-back voltage PWM multilevel converter or the matrix converter that is suitable for full exploitation of motoring/generating at sub- and supersynchronous speeds, so typical in pump storage applications. 7 Parametric Generators Parametric generators exploit the magnetic anisotropy of both stator and rotor. PMs may be added on the stator or on the rotor. Single magnetic saliency with PMs on the rotor is also used in some configurations. 20 Switched reluctance generators (SRGs): (a) single-phase: 4/4 (4 × 4 poles) and (b) three-phase: 6/4 (6 × 4 poles).

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