A Novel Sensorless MPPT Controller for a High-Efficiency Microscale Wind Power Generation System
A Novel Sensorless MPPT Controller for a High-Efficiency Microscale Wind Power Generation System
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DOI：
10.1109/tec.2009.2032604
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发表时间：
2010-03
影响因子：
4.9
通讯作者：
C. Pan;Y. Juan
中科院分区：
文献类型：
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作者：
C. Pan;Y. Juan
针对微型风力发电系统，首次提出了一种具有自适应补偿控制的最大功率点跟踪(MPPT)控制器。在自适应控制的基础上，改善了系统的动态响应，在风速变化时可以捕获更多的风能。出于成本和可靠性的考虑，建议的WPGS不使用机械式传感器。为了实现更高的效率和更低的总谐波失真(THD)，提出了一种单级AC-DC转换器来取代传统的两级转换器，并加入了MPPT控制。为了进一步提高转换器的效率，提出了一种准同步整流(QSR)算法来控制有源开关，以减小体二极管的导通损耗。为了便于实现，还推导了相应的有源开关的解析闭合占空比。在此基础上，构建了一个原型系统，并用数字信号处理器(即数字信号处理器)实现了最大功率点跟踪控制器和QSR算法。给出了一些实验结果，验证了所提出的微尺度WPGS的有效性。结果表明，微尺度WPGS的总输出能量可以提高13%。
In this paper, a novel maximum power point tracking (MPPT) controller with an adaptive compensation control is first proposed for a microscale wind power generation system (WPGS). Based on the adaptive control, the dynamic response is improved and more wind energy can be captured during wind velocity variations. For cost and reliability consideration, no mechanical sensors are used in this proposed WPGS. A single-stage ac-to-dc converter is then proposed to replace the traditional two-stage converter and incorporate the MPPT control for achieving higher efficiency and lower total harmonic distortion (THD). To further improve the efficiency of the converter, a quasi-synchronous rectification (QSR) algorithm is proposed to control the active switches for reducing the conduction loss of the body diodes. The analytic closed form duty ratios of the corresponding active switches are also derived for easy implementation. Furthermore, a prototype system is constructed and the proposed MPPT controller and QSR algorithm are both implemented using a DSP, namely, TMS320F2812. Some experimental results are given to verify the validity of the proposed microscale WPGS. It is found that the total output energy can be increased by 13% for the microscale WPGS.