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This paper proposes a variable speed control scheme for a tidal in-stream power generation system. The generator used in the study is a Squirrel Cage Induction Generator (SCIG) deliberately selected due to its robustness to boisterous conditions and ease of maintenance which makes it suitable for undersea application. An in indirect vector control mode, where the d-axis stator current controls the...
This paper presents a microfabricated electro-quasi-static (EQS) induction turbine generator that has generated net electric power. A maximum power output of 192 muW was achieved under driven excitation. We believe that this is the first report of net-electric-power generation by an EQS induction machine of any scale found in the open literature. This paper also presents self-excited operation in...
Mathematical modelling, design and development of ldquoa variable speed constant frequency self-excited induction generator (IG)rdquo using field-oriented techniques for its voltage and frequency control is described. A space-phasor model for the generator is developed to implement Indirect Field Oriented Control. To study the generator dynamic response the machine was driven by a separately-excited...
Special features of ultrahigh-speed induction generators are analyzed, that are applied in a system developed to generate electric energy by utilizing renewable and waste energy resources. The solution is based on a system that consists of a high-speed turbine, coupled to a three-phase induction generator, an AC/AC converter and a supervisory control unit. The function of the system is to utilize...
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