共查询到18条相似文献,搜索用时 62 毫秒
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我国863计划“兆瓦级变速恒频风电机组”项目由有着20余年风能发电科研经验的、我国最早进行风力发电科研的高等院校之一的沈阳工业大学承担。 相似文献
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风力发电中的变速恒频技术 总被引:11,自引:0,他引:11
风力发电时希望风能利用系数能处于或接近最佳值,使用变速恒频技术能做到这一点。本文介绍风力发电系统中常用的几种变速恒频技术及一种新型的变速恒频发电系统,并对各变速恒频发电系统的特点作了简要分析。 相似文献
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变速恒频风力发电系统及其控制技术研究 总被引:3,自引:2,他引:3
为了最大限度地利用风能,风力发电系统应采用变速恒频控制策略。分析了鼠笼异步发电系统、双馈发电系统、无刷双馈发电等变速恒频风力发电系统的原理、性能及特点,通过对比各种风力发电机和各种控制方法的优缺点,对未来风力发电机和风力发电控制技术的发展趋势做了展望: 风力发电机大型化;采用变桨距和变速恒频技术;风力发电机采用直接驱动;采用智能化控制等。 相似文献
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风力发电用双馈感应发电机控制策略的研究 总被引:22,自引:0,他引:22
该文从并网风力发电系统的基本特性出发,在分析双馈感应电机数学模型及其定子磁链定向矢量控制的基础上,论证了其有功功率和无功功率的独立控制的可行性并给出了PID双闭环控制方案。利用Matlab/Simulink平台,仿真研究并验证了该控制方案的正确性,对实际软硬件系统的设计与调试具有一定的指导意义。 相似文献
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变速恒频风电机组额定风速以上恒功率控制 总被引:4,自引:0,他引:4
介绍额定风速以上,采用功率反馈控制策略,控制风力发电机组在高风速区恒功率发电。仿真结果进一步证实了控制策略的可行性,同时介绍控制的具体实现方法。 相似文献
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A variable speed wind turbine power control 总被引:8,自引:0,他引:8
To optimize the power in a wind turbine, the speed of the turbine should be able to vary with the wind speed. A simple control scheme is proposed that will allow an induction motor to run a turbine at its maximum power coefficient. The control uses a standard V/Hz converter and controls the frequency to achieve the desired power at a given turbine speed 相似文献
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Modern wind turbines are predominantly variable speed wind turbines with power electronic interface. Emphasis in this paper is therefore on the modelling and control issues of these wind turbine concepts and especially on their impact on the power system. The models and control are developed and implemented in the power system simulation tool DIgSILENT. Important issues like the fault ride‐through and grid support capabilities of these wind turbine concepts are addressed. The paper reveals that advanced control of variable speed wind turbines can improve power system stability. Finally, it will be shown in the paper that wind parks consisting of variable speed wind turbines can help nearby connected fixed speed wind turbines to ride‐through grid faults. Copyright © 2009 John Wiley & Sons, Ltd. 相似文献
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Reliable and powerful control strategies are needed for wind energy conversion systems to achieve maximum performance. A new control strategy for a variable speed, variable pitch wind turbine is proposed in this paper for the above-rated power operating condition. This multivariable control strategy is realized by combining a nonlinear dynamic state feedback torque control strategy with a linear control strategy for blade pitch angle. A comparison with existing strategies, PID and LQG controllers, is performed. The proposed approach results in better power regulation. The new control strategy has been validated using an aeroelastic wind turbine simulator developed by NREL for a high turbulence wind condition. 相似文献
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The increasing wind penetration in today’s power grids has led to growing interest in the frequency control capabilities of wind generation. Several publications have proposed a variety of methods both on the levels of a single turbine and of a wind farm. This paper focuses on the role of wind generation in a system’s primary frequency control. Wind turbine control methods that enable frequency support and control are presented. The advantages and disadvantages of each method are discussed. 相似文献