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首页> 外文会议>2011 46th International Universities' Power Engineering Conference >Adaptive LMS Algorithm Based Input Current Harmonic Suppression in AC-DC-AC Drive with Either Constant Or Pulsed DC Link
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Adaptive LMS Algorithm Based Input Current Harmonic Suppression in AC-DC-AC Drive with Either Constant Or Pulsed DC Link

机译：基于自适应LMS算法的恒定或脉冲直流环节AC-DC-AC驱动器中基于输入电流谐波抑制

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摘要

This paper suggests an adaptive filtering scheme based on least mean square (LMS) algorithm to eliminate selective line current harmonics in the front end rectifier of three-phase inverter. Harmonic elimination in this innovative approach is achieved by adding weighted sine and cosine components of respective selected frequencies to match their amplitudes and phase angles present in the line current and then subtracting this sum from the line current. The proposed harmonic elimination scheme works evenly well for de link both constant and fluctuating due to poor capacitor. The algorithm eliminates the desired low-order harmonics of the input current, in particular the fifth, seventh and eleventh harmonics. In consequence, the proposed methodology also reduces the input current total harmonic distortion (THD). The triumph of the algorithm is validated hy MATLAB/SIMULINK toolhox.
机译：本文提出了一种基于最小均方（LMS）算法的自适应滤波方案，以消除三相逆变器前端整流器中的选择性线路电流谐波。通过将各个选定频率的加权正弦和余弦分量相加，以匹配线路电流中存在的振幅和相角，然后从线路电流中减去该总和，可以消除这种创新方法中的谐波。所提出的谐波消除方案可以很好地解决由于电容器不良而引起的恒定和波动的脱链问题。该算法消除了输入电流的所需低阶谐波，特别是五阶，七阶和十一阶谐波。结果，所提出的方法还减少了输入电流总谐波失真（THD）。该算法的成功通过MATLAB / SIMULINK toolhox进行了验证。

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