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Grid compliance is a crucial feature for modern wind turbine systems in power generation. The generator is one of the key components in a WTS. However, in order to predict the response of a directly grid connected wind generator to grid code requirements, an optimisation-based design over a large design space is needed. In this research, an analytical design model is developed for a grid compliant...
Grid-compliant wind-turbine systems require compensation of reactive power into the grid to maintain voltages and increase power system stability under variable load levels. To provide a solution a conventional PM synchronous generator of a slip synchronous wind generator system is upgraded to a hybrid-PM synchronous generator (hybrid-PMSG) by introducing slots in the rotor that are wound with field...
In this paper a grid compliant variable-flux PM generator topology for wind turbine applications is proposed. An analytical comparative study of a series-double excited synchronous generator and an electrically excited synchronous generator (SG) is carried out with particular focus on the amount of MMF required to satisfy grid codes. A finite element based design optimization of the proposed generator...
In this paper a hybrid-PM synchronous generator (hybrid PMSG) to be used in small-scale wind turbine systems is described. PMSGs are known for their high efficiency and high torque density. However they produce a constant flux which inhibits their direct grid connection. For grid compliance, power electronic converters are usually used. In this paper another possibility for the direct grid-connected...
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