基于混合馈入型自适应补偿的电网谐波功率放大器超宽频控制
作者:
作者单位:

(1.国网辽宁省电力有限公司沈阳供电公司,辽宁 沈阳 110003;2.国网辽宁省电力有限公司阜新供电公司,辽宁 阜新 123100;3.国网辽宁省电力有限公司盘锦供电公司,辽宁 盘锦124010;4.国网辽宁省电力有限公司朝阳供电公司,辽宁 朝阳 122000;5.南京理工大学自动化学院,江苏 南京 210094)

作者简介:

通讯作者:

汪 诚(1988—),男,博士,副教授,主要从事模块化电力电子变换器主电路拓扑与性能控制等研究;E?mail:chw714@njust.edu.cn

中图分类号:

TM46

基金项目:

江苏省自然科学基金(BK20190461);国网辽宁省电力有限公司科技项目(21YF?63)


Ultra‑wideband control of harmonic power amplifier based on hybrid feed‑in adaptive compensation
Author:
Affiliation:

(1.Shenyang Power Supply Company,State Grid Liaoning Electric Power Co., Ltd., Shenyang 110003, China; 2. Fuxin Power Supply Company, State Grid Liaoning Electric Power Co., Ltd., Fuxin 123100, China; 3.Panjing Power Supply Company,State Grid Liaoning Electric Power Co., Ltd.,Panjing 124010, China; 4.Chaoyang Power Supply Company,State Grid Liaoning Electric Power Co., Ltd.,Chaoyang 122000, China;5. School of Automation, Nanjing University of Science and Technology, Nanjing 210094, China)

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    摘要:

    基于电力电子变换器的功率放大器因其灵活易控成为电网电压模拟的理想物理接口之一。针对现有功率放大器控制方法会放大频率偏差、使滤波电路参数漂移以及难以模拟高频谐波的弊病,首先,提出一种混合馈入型自适应补偿的谐波功率放大器超宽频控制策略,以高精度复现宽频电压信号并兼顾动态与稳态性能;然后,设计多变量混合馈入型环路以补偿系统暂态特性;在时域下利用Lyapunov函数推导计及参数漂移的自适应方法以补偿滤波参数不确定性;深入分析并克服混合自适应补偿的数字实现局限性;讨论所提方法作为重复内嵌控制的性能提升;最后,制作样机,进行所提策略动态性能与稳态精度的仿真及实验验证。结果表明:所提方法相较于既有控制具备更快的动态响应、更高的稳态精度以及更宽的跟踪谐波频率范围,可以实现对超宽频参考电压的快速无差跟踪。

    Abstract:

    Power amplifiers based on power electronic converters have become one of the ideal physical interfaces for grid voltage simulation due to their flexibility and ease of control. Addressing the drawbacks of existing power amplifier control methods, which can amplify frequency deviations, cause filter circuit parameter drifts, and make it difficult to simulate high-frequency harmonics, an ultra-wideband control strategy for harmonic power amplifiers with mixed feed-in adaptive compensation is proposed. This strategy aims to accurately reproduce wideband voltage signals while balancing dynamic and steady-state performance. Next, a multivariable mixed feed-in loop is designed to compensate for the transient characteristics of the system. In the time domain, an adaptive method considering parameter drifts is derived using the Lyapunov function to compensate for uncertainties in filter parameters. The limitations of digital implementation in mixed adaptive compensation are thoroughly analyzed and overcome. The performance enhancement of the proposed method as a repeated embedded control is discussed. Finally, a prototype is built, and simulations and experiments are conducted to verify the dynamic performance and steady-state accuracy of the proposed strategy. The results indicate that compared to existing controls, the proposed method offers faster dynamic response, higher steady-state accuracy, and a wider range of harmonic frequency tracking. It can achieve rapid and error-free tracking of ultra-wideband reference voltages.

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代子阔,刘尚坤,李冰心,等.基于混合馈入型自适应补偿的电网谐波功率放大器超宽频控制[J].电力科学与技术学报,2024,39(4):245-254.
DAI Zikuo, LIU Shangkun, LI Bingxin, et al. Ultra‑wideband control of harmonic power amplifier based on hybrid feed‑in adaptive compensation[J]. Journal of Electric Power Science and Technology,2024,39(4):245-254.

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  • 在线发布日期: 2024-09-10
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