| Summary: | 碩士 === 國立成功大學 === 電機工程學系碩博士班 === 97 === This thesis presents stability analysis, steady-state results, and dynamic performance of ocean thermal energy conversion (OTEC) system and solar-concentrated OTEC system under two configurations, i.e., OTEC system directly connecting to a utility grid through a transmission line and a solar-concentrated OTEC system connecting to a utility grid through a transmission line and connecting to a local load. The q-d axis equivalent-circuit model is employed to establish the models for solar-concentrated device, heat exchanger, governor, turbine, and synchronous generator to derive the complete dynamic equations of the studied system under three-phase balanced loading conditions. Steady-state characteristics of the studied system under different synchronous generator operating conditions are examined. Dynamic simulations of the studied system subject to different disturbances are also carried out. Also, an excitation controller is employed to improve the dynamic response of the studied system under the configuration of solar-concentrated OTEC system connecting to a utility grid through a transmission line and connecting to a local load.
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