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SUMMARYA new wind turbine generating system that employs a current-source thyristor inverter is proposed, and the steady-state and dynamic performances for a practical system are discussed. The proposed system is essentially based on the shaft generator system that is widely used in large ships, and it has many features such as high reliability and generation of output power of high quality. It is shown that electric power with constant frequency and voltage with low distortion can be obtained by using this novel system despite the changes in the velocity of natural wind. A dynamic model of the system is also developed, and a good agreement between simulated and experimental performances is obtained, thereby confirming the validity of the model.

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SUMMARYA practical-scale hybrid wind turbine generating system is developed for generating a constant output power even when the wind velocity fluctuates. The system consists of a wind turbine synchronous generator (SG), a rectifier, a current-source thyristor inverter, an SG driven by a prime mover, and a duplex reactor. A high-quality output voltage waveform is always obtained from the system, which has a very simple configuration. Experimental results show the feasibility of the system. A model of the system is also developed to predict the dynamic performance when the system conditions such as the wind velocity and load are changed, and good agreement between the simulated and experimental performance is observed, confirming the validity of the dynamic model. C⃝ 2014 Wiley Periodicals, Inc. Electr Eng Jpn, 188(1): 60-69, 2014; Published online in Wiley Online Library (wileyonlinelibrary.com).

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