Effectiveness of generator control strategies on meeting pulsed load requirements in ship electric systems

Vilar, Z.W.; Dougal, Roger A.

doi:10.1109/ests.2005.1524715

Cited by 6 publications

(1 citation statement)

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“…Beno et al reported that one 5MW motor used to supply charging power to pulsed loads has no significant effect on a power generation system rated at 80MW [11]. Previous published literature studied the performance of generator controls when a large pulsed load is imposed on a system powered by 60Hz generators [12] [13]. However, no publication has yet described use of a high-speed turbo-generator unit.…”

Section: Introductionmentioning

confidence: 98%

Load Following Ability of a Ship Generating Plant Comprising a Mixed Set of High-Speed and Synchronous Turbo-Generators

Vilar

Dougal

2007

2007 IEEE Electric Ship Technologies Symposium

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A ship power system comprising a mixed set of large line-connected 60 Hz turbo generators and lower-powered high speed electronically-matched permanent magnet turbogenerators is potentially unstable against large, abrupt changes of the load power demand. Concerns include whether the high speed turbine could stall or overspeed. We show that suitable control algorithms can fully protect the high-speed generator. Yet with that protection of the high speed turbine, the stability of the AC-bus voltage and the 60Hz generator frequency become the critical limiting factors. Following rapid increases of load, up to 15 MW/s, the high-speed generator always operates safely because of the control design and the energy stored on the DC bus. System stability is potentially threatened, however, by abrupt decreases of load. Limits on the rate of decrease depend on the initial and final load powers.

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Section: Introductionmentioning

confidence: 98%