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248 Renewable Energy Devices and Systems with Simulations in MATLAB and ANSYS ®
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capable of being used for power in excess of the around 2.5 MW range unit, because of its
higher robustness and moderate total system costs.
• The PMSG and DCE-SG have been given even more space for an optimal design, based
on a single-composite cost (objective) function and advanced analytical machine models
with only trial key FEM validations. The case studies on a 480 rpm 8 MW PMSG and an
11 rpm, 7.6 MW DCE-SG (similar to the largest power systems installed recently) showed
good overall performance. However, a multiobjective FEM-only modeling optimal design
based on DE algorithm is the next logic step for a finalized design.
• New topologies of wind generators are also mentioned in the chapter, introduced recently
in the literature, but they are not treated in detail for lack of space. The interested reader is
urged to follow, as a start, the suggested selected literatures [1–3].

REFERENCES
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and Control for Wind Energy Generation, Wiley, Oxford, U.K., 2011.
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Generators, CRC Press/Taylor & Francis Group, New York, 2004.
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