Overview of different wind generator systems and their comparisons

Inst. of Energy Technol., Aalborg Univ., Aalborg
IET Renewable Power Generation (Impact Factor: 1.9). 07/2008; 2(2):123 - 138. DOI: 10.1049/iet-rpg:20070044
Source: IEEE Xplore


With rapid development of wind power technologies and significant growth of wind power capacity installed worldwide, various wind turbine concepts have been developed. The wind energy conversion system is demanded to be more cost-competitive, so that comparisons of different wind generator systems are necessary. An overview of different wind generator systems and their comparisons are presented. First, the contemporary wind turbines are classified with respect to both their control features and drive train types, and their strengths and weaknesses are described. The promising permanent magnet generator types are also investigated. Then, the quantitative comparison and market penetration of different wind generator systems are presented. Finally, the developing trends of wind generator systems and appropriate comparison criteria are discussed. It is shown that variable speed concepts with power electronics will continue to dominate and be very promising technologies for large wind farms. The future success of different wind turbine concepts may strongly depend on their ability of complying with both market expectations and the requirements of grid utility companies.

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    • "In addition to this, VSWT can be controlled to minimize the stress on the tower structure, gears and wind generator (WG) shaft, since the blades absorb peaks of WT torque during the variation of the WG speed of rotation, leading to a longer installation life of WECS [18]. In VSWT system, the electric generators mostly fall into either synchronous generator or asynchronous generator [18] [24] [25], in which the prime mover and subsequently the rotor rotate at synchronous and super-synchronous speed respectively for generating mode. The Wound Rotor and Permanent Magnet type of generators are considered under synchronous generator and under asynchronous generator, the Squirrel Cage, Wound Rotor and Doubly Fed type of generators are considered. "
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    ABSTRACT: Wind power is the most reliable and developed renewable energy source over past decades. With the rapid penetration of the wind generators in the power system grid, it is very essential to utilize the maximum available power from the wind and to operate the wind turbine (WT) at its maximal energy conversion output. For this, the wind energy conversion system (WECS) has to track or operate at the maximum power point (MPP). A decent variety of publication report on various maximum power point tracking (MPPT) algorithms for a WECS. However, making a choice on an exact MPPT algorithm for a particular case require sufficient proficiency because each algorithm has its own merits and demerits. For this reason, an appropriate review of those algorithms is essential. However, only a few attempts have been made in this concern. In this paper, different available MPPT algorithms are described for extracting maximum power which are classified according to the power measurement i.e. direct or indirect power controller. Merits, demerits and comprehensive comparison of the different MPPT algorithms also highlighted in the terms of complexity, wind speed requirement, prior training, speed responses, etc. and also the ability to acquire the maximal energy output. This paper serves as a proper reference for future MPPT users in selecting appropriate MPPT algorithm for their requirement.
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    • "There are five different types of combination for coreless type generator, which is a double-stator slotted type, a double-rotor slotted type, a single-sided axial flux permanent magnet with stator balance, a single-sided axial flux permanent magnet with rotor balance and a slotless single-stator double-rotor type. According to research elsewhere, two-sided axial flux permanent magnet type is better than one-sided axial flux permanent magnet[59]. High compactness and diskshaped profile make the model suitable for integration with a mechanical components such as wind turbine and internal combustion engine[60]as well as an additional generator for hybrid vehicles. "

    Full-text · Article · Jan 2016 · MATEC Web of Conferences
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    • "Meanwhile, coupled induction generators are attracting a lot of interest in renewable energy, especially, wider penetration of wind power, see Manwell et al. (2009). Although the cutting edge technology of wind turbines uses both induction and synchronous machines with power electronics (see Li and Chen (2008)), it is stated in Manwell et al. (2009) that many of currently existing wind turbines with large capacity are of induction type. Understanding dynamics of coupled rotatory generators is thus inevitable for design and operation of the current and future power grid. "

    Full-text · Article · Dec 2015
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