Efficiency and reliability enhancement of distributed wind energy systems have been the subject of extensive research effort for the purpose of energy cost reduction and power availability. This work investigates the integration of a hydromechanical power split transmission into the drivetrain of a stall‐regulated wind turbine with a fixed‐speed generator to enhance the overall system efficiency without compromising its reliability. The proposed drivetrain configuration introduces a variable transmission ratio capability, thus enabling the turbine rotor to cope with varying wind speeds independent of the fixed generator speed. An extremum‐seeking control approach is adopted to maximize energy harvesting by controlling a variable geometric volume hydraulic pump without the need for wind speed measurement. Compared with a stall‐regulated fixed‐speed wind turbine, the performance of the proposed wind turbine configuration is evaluated in simulation environment under different wind speed conditions. The results demonstrate the ability of the proposed wind turbine configuration to significantly improve the system overall efficiency in partial and full‐load regions of operation. Consequently, the proposed wind turbine configuration with extremum‐seeking control can be considered as an efficient and reliable possible alternative for future distributed and isolated wind energy systems.

中文翻译：

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具有液压机械传动系统的风力涡轮机的极值搜索控制

分布式风能系统的效率和可靠性增强已经成为减少能源成本和提高电力可用性的广泛研究工作的主题。这项工作研究了将水力机械功率分配变速器集成到带有定速发电机的失速调节式风力涡轮机的传动系统中，以提高整体系统效率而又不损害其可靠性。拟议的传动系统配置引入了可变的传动比能力，从而使涡轮转子能够应对独立于固定发电机转速的变化风速。采用极值搜索控制方法，通过控制可变几何体积的液压泵，无需风速测量，即可最大程度地收集能量。与失速调节的定速风轮机相比，在不同风速条件下的仿真环境中评估了拟议的风轮机配置的性能。结果表明，所提议的风力涡轮机配置能够显着提高部分和满负荷运行区域的系统整体效率。因此，建议的带有极值搜索控制的风力发电机组配置可以被认为是未来分布式和隔离式风能系统的高效可靠的替代方案。结果表明，所提议的风力涡轮机配置能够显着提高部分和满负荷运行区域的系统整体效率。因此，建议的带有极值搜索控制的风力发电机组配置可以被认为是未来分布式和隔离式风能系统的高效可靠的替代方案。结果表明，所提议的风力涡轮机配置能够显着提高部分和满负荷运行区域的系统整体效率。因此，建议的带有极值搜索控制的风力发电机组配置可以被认为是未来分布式和隔离式风能系统的高效可靠的替代方案。