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首页> 外文会议>2016 International Conference on Electrical Power and Energy Systems >A novel approach to multiple dominant current harmonics removal under realistic utility condition of harmonic unbalance
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A novel approach to multiple dominant current harmonics removal under realistic utility condition of harmonic unbalance

机译：实际应用中谐波不平衡条件下多种主电流谐波去除的新方法

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The present work aims to remove dominant current harmonics (5th,7th,11th and 13th) of a 240V(rms) utility at the point of common coupling for the harmonically unbalanced condition of source current, using parallel combination of two shunt hybrid active filters. The harmonically unbalanced condition of source current has been created by connecting different types of non-linear loads in different phases of the three phase supply i.e. three phase diode bridge rectifier in abc, single phase fully controlled bridge rectifier in phase a & b and single phase ac voltage controller in phase b & c. Due to the different types of non-linear loads connected in the different phases, there are unequal magnitudes of harmonics in different phases thus leading to the harmonic unbalance in the source current. Fourier analysis is used for detection of the desired harmonic from the load current and Sinusoidal Pulse Width Modulation technique has been used to produce gating pulses for the active filter.
机译：本工作旨在通过并联两个并联混合有源滤波器，在源电流的谐波不平衡条件的公共耦合点上消除240V（rms）实用程序的主要电流谐波（第5，第7，第11和第13）。通过在三相电源的不同相中连接不同类型的非线性负载来创建源电流的谐波不平衡状况，即abc中的三相二极管桥式整流器，a和b相中的单相全控桥式整流器以及单相b和c相中的交流电压控制器。由于在不同相中连接的非线性负载的类型不同，因此在不同相中存在不相等的谐波幅度，从而导致电源电流中的谐波不平衡。傅里叶分析用于从负载电流中检测所需的谐波，正弦脉冲宽度调制技术已用于为有源滤波器产生选通脉冲。

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