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Improved inertial control for permanent magnet synchronous generator wind turbine generators

机译：永磁同步发电机风力发电机的惯性控制得到改进

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摘要

With increasing integrations of large-scale systems based on permanent magnet synchronous generator wind turbine generators (PMSG-WTGs), the overall inertial response of a power system will tend to deteriorate as a result of the decoupling of rotor speed and grid frequency through the power converter as well as the scheduled retirement of conventional synchronous generators. Thus, PMSG-WTGs can provide value to an electric grid by contributing to the system's inertial response through the inherent kinetic energy stored in their rotating masses and fast power converter control. In this study, an improved inertial control method based on the maximum power point tracking operation curve is introduced to enhance the overall frequency support capability of PMSG-WTGs in the case of large supply-demand imbalances. Moreover, this method is implemented in the CART2-PMSG integrated model in MATLAB/Simulink to investigate its impact on the wind turbine's structural loads during the inertial response process. Simulation results indicate that the proposed method can effectively reduce the frequency nadir, arrest the rate of change of frequency, and alleviate the secondary frequency dip while imposing no negative impact on the major mechanical components of the wind turbine.
机译：随着基于永磁同步发电机风力涡轮发电机（PMSG-WTG）的大型系统集成的增加，由于转子速度和电网频率通过功率解耦，电力系统的整体惯性响应将趋于恶化。转换器以及常规同步发电机的计划淘汰。因此，PMSG-WTG可以通过存储在其旋转质量中的固有动能和快速功率转换器控制来为系统的惯性响应做出贡献，从而为电网提供价值。在这项研究中，引入了一种基于最大功率点跟踪操作曲线的改进惯性控制方法，以在出现供需不平衡的情况下提高PMSG-WTG的整体频率支持能力。此外，该方法在MATLAB / Simulink中的CART2-PMSG集成模型中实现，以研究其在惯性响应过程中对风力涡轮机结构载荷的影响。仿真结果表明，该方法可以有效降低频率最低点，抑制频率变化率，减轻次级频率骤降，而不会对风力发电机的主要机械部件产生负面影响。

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