Adjusting Synchronverter Dynamic Response Speed via Damping Correction Loop
Adjusting Synchronverter Dynamic Response Speed via Damping Correction Loop
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DOI：
10.1109/tec.2016.2645450
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发表时间：
2017-06
影响因子：
4.9
通讯作者：
Shuan Dong;Y. Chen
中科院分区：
文献类型：
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作者：
Shuan Dong;Y. Chen
本文提出在传统的同步器控制方案的基础上增加一个辅助回路，以自由调节动态响应速度。该回路被称为阻尼修正回路，因为它的形式和功能让人想起经典同步发电机模型中的阻尼组件。所提出的辅助回路的核心是创建一个额外的可调谐参数，允许不受限制地调整系统阻尼比，而不影响稳态频率下垂特性，这是对传统同步器设计的改进。在该方法中，随着响应速度的提高，对相关参数进行了解析调谐，减小了有功和无功耦合效应。通过广泛的小信号分析验证了该方法的动态响应和鲁棒性。此外，时域仿真显示了该方法相对于现有方法的优势。
This paper proposes to augment the conventional synchronverter control scheme with an auxiliary loop to freely adjust the dynamic response speed. This loop is dubbed as a damping correction loop since its form and function are reminiscent of the damping component in the classical synchronous generator model. Central to the proposed auxiliary loop is the creation of an additional tuneable parameter that allows for unrestricted adjustment of the system damping ratio without affecting the steady-state frequency droop characteristic, which is an improvement over the conventional synchronverter design. In the proposed method, relevant parameters are analytically tuned and active- and reactive-power coupling effects are reduced when operating with increased response speed. The dynamic response and robustness of the approach are verified via extensive small-signal analysis. Furthermore, time-domain simulations highlight the advantages of the proposed method over existing ones.