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首页> 外文期刊>IEEE Transactions on Industrial Electronics >Investigation and Modeling of Combined Feedforward and Feedback Control Schemes to Improve the Performance of Differential Mode Active EMI Filters in AC–DC Power Converters
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Investigation and Modeling of Combined Feedforward and Feedback Control Schemes to Improve the Performance of Differential Mode Active EMI Filters in AC–DC Power Converters

机译：联合前馈和反馈控制方案的研究和建模，提高AC-DC电力转换器中差模具EMI滤波器性能的性能

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摘要

In this paper, the models of active differential mode electromagnetic interference input filters for ac-dc converters are first investigated. The models are developed for active filters with single feedback (FB) and single feedforward (FF) configurations, which include an active filter, passive filters, and the noise model for a converter. To increase the gain of the single active filter, the models for FB-FF, FF-FB, parallel FB, and series feedback (SFB) configurations are developed and investigated. Loop gains and insertion gains for all of these configurations are derived and compared. Stability has been analyzed based on the loop gains and a compensation technique is introduced to ensure stability. Based on the comparison among all these control configurations, it has been found that the SFB configuration can achieve the highest noise reduction. The loop gains and insertion gains of an active filter prototype with the SFB configuration are measured using a network analyzer to validate the developed model and compensation technique. Finally, spectrum measurements with a commercial boost power factor correction ac-dc converter have been conducted to verify the developed modeling and control techniques as well as the predicted performance for the SFB configuration.
机译：本文首先研究了用于AC-DC转换器的主动差模电磁干扰输入滤波器的模型。该模型是为具有单反馈（FB）的有源滤波器和单馈（FF）配置而开发的模型，包括有源滤波器，无源滤波器和转换器的噪声模型。为了增加单个有源滤波器的增益，开发和研究了FB-FF，FF-FB，并行FB和串联反馈（SFB）配置的模型。源和比较所有这些配置的循环收益和插入增益。基于环路增益分析稳定性，并引入补偿技术以确保稳定性。基于所有这些控制配置之间的比较，已经发现SFB配置可以实现最高降噪。使用网络分析仪测量具有SFB配置的有源滤波器原型的环路增益和插入增益，以验证开发的模型和补偿技术。最后，已经进行了具有商业升压功率因数校正AC-DC转换器的频谱测量以验证开发的建模和控制技术以及SFB配置的预测性能。

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