论文标题
快速频率响应和MPPT的PMSG风力涡轮机的统一网格形成控制
Unified Grid-Forming Control of PMSG Wind Turbines for Fast Frequency Response and MPPT
论文作者
论文摘要
在这项工作中，我们提出了一种新型的双端口网格形成控制策略，用于具有背靠背电压源转换器的永久磁铁同步发电机风力涡轮机，该磁力机统一了从最大功率点跟踪（MPPT）到提供惯性和快速响应而无需探索网格模式在网格范围内切换网格和网格构图和网格构图的整个功能范围。控件在网格侧转换器（GSC）和机器端转换器（MSC）AC端子上施加了明确的AC电压，并通过GSC和MSC明确稳定DC-Link电容器电压。风力涡轮机的动能存储和缩减通过隐式转子速度控制和俯仰角控制的组合进行调整，并直接确定网格支持的工作模式和水平。此外，我们为简化系统提供了分析的小信号稳定性条件，并明确表征了控制增益，削减和风力涡轮机稳态响应之间的关系。最后，使用详细的模拟研究来验证结果，并将提出的对照与最新的MPPT对照进行了比较。
In this work we present a novel dual-port grid-forming control strategy, for permanent magnet synchronous generator wind turbines with back-to-back voltage source converters, that unifies the entire range of functions from maximum power point tracking (MPPT) to providing inertia and fast frequency response without explicit mode switching between grid-following and grid-forming control. The controls impose a well-defined AC voltage at the grid-side converter (GSC) and the machine-side converter (MSC) AC terminals and explicitly stabilize the DC-link capacitor voltage through both GSC and MSC. The wind turbine's kinetic energy storage and curtailment are adjusted through a combination of implicit rotor speed control and pitch angle control and directly determine the operating mode and level of grid support. Moreover, we provide analytical small-signal stability conditions for a simplified system and explicitly characterize the relationship between control gains, curtailment, and the wind turbines steady-state response. Finally, a detailed simulation study is used to validate the results and compared the proposed control with state-of-the-art MPPT control.
