不同控制策略对双馈风机暂态特性影响仿真研究

不同控制策略对双馈风机暂态特性影响仿真研究
摘要：本文根据网侧基于电网电压定向的矢量控制策略和直接功率控制策略及机侧基于定子磁链定向的矢量控制策略和直接功率控制策略,在PSCAD平台上分别搭建了基于矢量控制策略和直接功率控制策略的两套双馈风机仿真模型,对比分析了电网发生对称性短路故障导致机端电压不同程度轻微跌落和严重跌落时基于不同控制策略的风机的暂态特性,分析了不同时刻投入撬棒电路时基于不同控制策略的风机短路电流特性,并仿真分析了基于不同控制策略的网侧变频器不发无功时对直流母线电压的稳定作用及发无功时对电网电压的支撑作用,最后总结了不同控制策略对双馈风机对称性短路故障暂态特性的影响。

Abstract:In this paper, two simulation models of DFIG are set up respectively based on direct power control strategy and vector control strategy by using PSCAD simulation platform, on which the voltage oriented vector control and direct power control strategy are applied at grid side, and the stator flux oriented vector control and direct power control strategy are used at rotor side. Then the transient properties of wind turbine based on different control strategies when different mild and serious voltage dip caused by symmetric fault are analyzed based on the different control strategies. And the characteristic of short-circuit current for wind turbine based on different control strategies is analyzed when the crowbar circuit is put into at different times. The stabilizing effect on DC bus voltage when grid-side converter doesnt output reactive power based on different control strategies is analyzed as well as the supporting effect on network voltage when grid-side converter outputs reactive power. In the end, the impact of different control strategies on fault transient characteristics of DFIG is summarized.

标题：不同控制策略对双馈风机暂态特性影响仿真研究
英文标题：Simulation Research on the Impact of Different Control Strategies on Transient Characteristics of DFIG

作者：王燕萍, 郑 涛, 王增平,

关键词：双馈风机, 矢量控制, 直接功率控制, 撬棒电路, 无功, 暂态特性,

发表日期：2016-08-14

2025-1-25 21:06 上传 不同控制策略对双馈风机暂态特性影响仿真研究.pdf

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