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国外文献 > 1.轴承 > 8. 系统与应用 > 电机与旋转机械

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标 题： A Compound Repetitive Control Strategy of H14 Three-level Inverter for Bearing Current Suppression in Wind Power System
风力系统中H14三电平逆变器轴承电流抑制的复合重复控制策略
作 者： Jie Li
Yanbo Wang
关键词： DFIG  [DFIG]
Bearing current  [ 轴承电流]
Common mode voltage  [ 共模电压]
H14  [ H14]
Repetitive control  [ 重复控制]
出版年： 2021
会议名： 12th IEEE Energy Conversion Congress & Exposition - Asia (ECCE-Asia 2021)
第12届IEEE能源转换大会暨展览会 - 亚洲（ECCE-Asia 2021）
届 次： 12th
摘 要： In this paper, H14 three-level inverter is proposed to reduce the bearing current in doubly-fed induction wind generator system (DFIG). The topology of H14 three-level inverter is presented and analysed under different switching patterns, and the corresponding CMV under each operation states is investigated. The control method of H14 inverter is presented by following a feasible minimal CMV output within the switching patterns. Furthermore, the compound controller is designed for the control system of the generator-side converter, which consists of the traditional PI control and the repetitive control. The repetitive controller based on the bandwidth coefficient (BRC) is used in the inner loop control and the traditional PI controller is used in the outer loop control. Through the stability analysis, the compensation term of BRC is determined. The simulation results fully verify that under the compound control, the H14 topology can effectively suppress the bearing current of the DFIG, and the harmonic characteristics of the DFIG maintains well.

本文提出一种H14三电平逆变器，用于降低双馈式感应风力发电机（DFIG）系统中的轴承电流。文中介绍了H14三电平逆变器的拓扑结构，并在不同开关模式下进行了分析，研究了各运行状态下的对应CMV（共模电压）。通过在开关模式内实现最小可行CMV输出，提出了H14逆变器的控制方法。此外，针对发电机侧变换器控制系统设计了复合控制器，该控制器由传统的PI控制与重复控制相结合。其中，内环控制采用基于带宽系数（BRC）的重复控制器，外环控制则采用传统的PI控制器。通过稳定性分析确定了BRC的补偿项。仿真结果充分验证了在复合控制下，H14拓扑能有效抑制DFIG的轴承电流，且DFIG的谐波特性保持良好。
中文内容为网络AI翻译，专业术语未必准确，仅供参考。

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