An integrated generator–rectifier architecture is a promising candidate for harvesting energy from offshore wind. The most attractive feature of this architecture is that the majority of the power is processed by reliable, efficient, and inexpensive diodes operating at the generator frequency. The use of dc collection grids (medium-voltage or high-voltage dc) is an emerging trend in a wind farm. This article proposes a dc grid interface circuit for the integrated generator–rectifier and a control strategy for maximum power point tracking. Using a 10-MW illustrative design, it is shown that the proposed architecture reduces the total switch volt–ampere rating requirement by 22.8%, which translates into overall loss reduction ranging between 28.3% and 71.7%, depending on the extracted power. The maximum power point tracking algorithm is implemented based on the relationship between the active rectifier d -axis current and the generated power. Experimental results obtained from a laboratory prototype validates the effectiveness of the proposed converter architecture and its control strategy. This approach opens up opportunities for integrating dc collection networks with offshore wind farms through an efficient, reliable, and cost-effective energy conversion system.

中文翻译：

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风能系统中集成发电机掩护架构的直流电网接口


集成发电机-整流器架构是从海上风电中获取能量的有前途的候选者。该架构最吸引人的特点是大部分功率由在发电机频率下运行的可靠、高效且廉价的二极管处理。使用直流收集电网（中压或高压直流）是风电场的一个新兴趋势。本文提出了一种用于集成发电机-整流器的直流电网接口电路和最大功率点跟踪的控制策略。使用 10 MW 说明性设计，结果表明，所提出的架构将总开关伏安额定值要求降低了 22.8%，这意味着总体损耗降低了 28.3% 至 71.7%，具体取决于提取的功率。最大功率点跟踪算法是根据有源整流器d轴电流与发电功率之间的关系来实现的。从实验室原型获得的实验结果验证了所提出的转换器架构及其控制策略的有效性。这种方法为通过高效、可靠且经济高效的能源转换系统将直流收集网络与海上风电场集成提供了机会。