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首页> 外文期刊>Power Electronics, IET >Low cost wind energy conversion system based on the discontinuous conduction mode three-phase semi-controlled rectifier
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Low cost wind energy conversion system based on the discontinuous conduction mode three-phase semi-controlled rectifier

机译:基于间断导通模式的三相半控整流器的低成本风能转换系统

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摘要

This study introduces a low-cost topology used in a wind energy conversion system with efficient power control in order to meet battery charge requirements. The proposed structure is based on a high-frequency three-phase semi-controlled rectifier operating in the discontinuous conduction mode associated with a buck converter. The system comprises three control loops, which limit the current and voltage ratings to the maximum values allowed by the batteries and also regulate the voltage across the intermediate dc link. In addition, a novel maximum power point tracking algorithm that intends to maximise the power extracted from the wind turbine/generator/converter association is proposed. The principle of the proposed technique is based on a modified version of power signal feedback algorithm, where a given power level can be extracted from the wind turbine for each value of the mechanical speed. However, since the optimal power curve is not exactly known and temperature causes considerable variations in the optimal power curve, a method to search the best match is proposed. Experimental results from a 300-W prototype are presented and discussed.
机译:这项研究介绍了一种在具有高效功率控制的风能转换系统中使用的低成本拓扑,以满足电池充电要求。所提出的结构基于在与降压转换器相关的不连续导通模式下运行的高频三相半控整流器。该系统包括三个控制回路,这些回路将电流和电压额定值限制为电池允许的最大值,并且还调节中间直流链路上的电压。另外,提出了一种新颖的最大功率点跟踪算法,该算法旨在最大化从风力涡轮机/发电机/转换器协会提取的功率。所提出技术的原理基于功率信号反馈算法的修改版本,其中可以针对每个机械速度值从风力涡轮机中提取给定功率水平。然而,由于最佳功率曲线不完全清楚,并且温度导致最佳功率曲线有相当大的变化,因此提出了一种搜索最佳匹配的方法。提出并讨论了300W原型的实验结果。

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