正序电压幅值检测及谐波抑制的改进

鄢盛辉; 周亮

鄢盛辉,周亮.正序电压幅值检测及谐波抑制的改进[J].电测与仪表,2016,53(15):.
YAN Shenghui,ZhouLiang.Positive sequence voltage#$NBSdetection and improvement of harmonic suppression[J].Electrical Measurement & Instrumentation,2016,53(15):.

正序电压幅值检测及谐波抑制的改进

Positive sequence voltage#$NBSdetection and improvement of harmonic suppression

DOI：

中文关键词: 正负序分离定积分谐波抑制电压检测

英文关键词:positive and negative sequence separation, definiteSintegral, harmonic suppression, voltageSdetection.

基金项目:国家高技术研究发展计划(863计划)—《1MW光伏并网逆变器模块关键技术研究及开发》,课题编号2013AA050404。

作者中文名	作者英文名	单位
鄢盛辉	YAN Shenghui	海军工程大学舰船综合电力技术国防科技重点实验室
周亮	ZhouLiang	海军工程大学舰船综合电力技术国防科技重点实验室

摘要点击次数: 1380

中文摘要:

传统的T/4周期延迟法受谐波影响较大,本论文对其进行改进,第一个电压矢量采用两级T/4定积分滤波后纯微分补偿,第二个电压矢量是T/2定积分构建的90度滞后矢量,两个电压矢量进行和差运算后实现正负序分离,然后通过dq变换到旋转坐标系中,得到正序幅值,方法简单易于实现,对谐波抑制效果明显。通过理论分析和Matlab/simulink仿真实验充分证明了改进方法的正确性和优点。

英文摘要:

The traditional method of T/4 delay is easily affectedSbySharmonics. The essay improves the method of T/4 delay. Double T/4 definiteSintegration can filter harmonic of the first vector and pure differential will compensate phase .T/2 definiteSintegration can build a lagging π/2 rad vector as the second. After arithmeticalSoperation of the two vectors, positive and negative sequence separation is completed. Through phase lock loop and rotatingScoordinateSsystem, it gets amplitude of positive sequence. The method is simple and easy to realize especially effective in harmonic suppression. Theoretical analysis and SsimulationSexperiment of Matlab/simulink prove the modified method is correct and advantaged.

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