2010 Twenty-Fifth Annual IEEE Applied Power Electronics Conference and Exposition (APEC) 2010
DOI: 10.1109/apec.2010.5433526
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Cited by 14 publications
(10 citation statements)
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“…The current zero-crossing distortion is an intrinsic problem associated with the single-switch boost-type PFC circuit, since the polarity of the rectifier voltage [ in Fig. 1(b)] is determined by the coil current direction (which two diodes conduct) [16]. In theory, larger inductance will reduce the current ripple while causing larger current zero-crossing distortion.…”
Section: A Converter Cell Topology and Design Considerationsmentioning
confidence: 99%
“…The current zero-crossing distortion is an intrinsic problem associated with the single-switch boost-type PFC circuit, since the polarity of the rectifier voltage [ in Fig. 1(b)] is determined by the coil current direction (which two diodes conduct) [16]. In theory, larger inductance will reduce the current ripple while causing larger current zero-crossing distortion.…”
Section: A Converter Cell Topology and Design Considerationsmentioning
confidence: 99%
“…Taking into account this aspect, the mathematical model proposed above can be validated and will be further used in order to determine the optimum operational speed, as to extract the maximum power from the rotor turbine. C. Mathematical model of the permanent magnet synchronous generator(PMSG) When considering the dynamic operation of the synchronous generator, the orthogonal model is described using the next equations system [5], [15]: T I I T I I T I I T I I …”
Section: B Maximum Power Point Determinationmentioning
confidence: 99%
“…For operating at maximum power points, it is compulsory that at least one of the following conditions to be fulfilled: wind speed shouldn't change rapidly or the equivalent inertia should be small. In practice, both at kW and MW range powers, considering the actual conditions characterized by significant wind speed time variations, the above conditions can not be fulfilled [10,15]; 5. when operating at variable wind speed, the permanent magnet synchronous generator being connected to the power grid (fixed voltage and frequency), the problems become more complicated because of the possible power oscillations which may affect the system stability [11,13]; 6. the controllers' tuning is much different compared to that of the conventional repeatable industrial applications [12,14] (movement, power control) because the wind speed is unpredictable in time and consequently controllers constants must continuously adapt to the weather dependent wind speed variations. Considering the aspects related above, the problem can be stated as: "What is the speed of the wind turbine system (turbine rotor + PMSG) in order to get the maximum power and considering the time interval order of hours or even days?…”
Section: Introductionmentioning
confidence: 99%
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“…On the other hand, it is possible to manufacture HTS generator that has a high efficiency by reducing the stator cooling loss. Therefore, stator current density is set at 3 A/mm 2 .…”
Section: Unit: MMmentioning
confidence: 99%