Integrated power control for small wind power system

Integrated power control for small wind power system
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小型风力发电系统综合功率控制

DOI:
10.1016/j.jpowsour.2012.06.039
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发表时间:
2012-11
影响因子:
9.2
通讯作者:
Lin Eerduntaokesu
Lin Eerduntaokesu
中科院分区:
工程技术2区
文献类型:
--
作者:
Qi Zhiyuan;Lin Eerduntaokesu

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为了提高小型风力发电系统的可靠性和能量转换效率,提出了一种由降压型DC/DC变换器和微机控制单元组成的小型风力发电系统。分析了SWPS的能流关系,建立了SWPS在不同工况下的能流过渡图。提出了一种综合功率控制方法,包括最大功率点跟踪、负载功率跟踪控制、超速保护和电池管理优化。设计了基于综合功率控制策略的功率控制器,并在SWPS实验平台上对其性能进行了测试。实验结果表明,该控制器可以自动切换到工作模式,以保持所提出的SWPS的能量平衡,在不同的风速或负载的条件下。而且,本发明的风力涡轮机在安全运行的前提下,可以高效利用风能,在合理的能量管理的情况下,可以延长电池的寿命。因此,本文提出的综合功率控制方法可以使SWPS获得最优的可靠运行。
A small wind power system (SWPS), which comprises a buck-type DC/DC converter and a microcomputer control unit, is presented for improving its reliability and energy conversion efficiency. The relationship between energy flows for the suggested SWPS is analyzed, and the transition diagram of energy flows under various working modes is established. An integrated power control method is put forward that contains maximum power point tracking, load power tracking control, over speed protection, and optimization of battery management. A power controller which is based on the integrated power control strategy is designed, and its performance is tested on the experimental platform for SWPS. Experimental results indicate that the controller can switch on automatically working modes to maintain the energy balance of the proposed SWPS under the conditions of variable wind speeds or loads. Moreover, the wind turbine can utilize wind energy efficiently at the premise of secure operation, and the battery life can be prolonged on condition of reasonable energy management. Therefore, the suggested integrated power control method in this paper can make the SWPS to obtain optimal and reliable operation.
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