Along with the rapid development of power electronic technique, an increasing number of power electronic equipments are widely used in industry and agriculture production and people’s daily life. The power electric equipments have the characteristic of nonlinear loads. They give rise to much harmonics and reaction power current into power grid and bring about a
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Along with the rapid development of power and electron technique, an increasing number of power and electron equipments are used diffusely in the course of industry-agriculture production and human daily life. The power and electron equipments have the characteristic of non-line load, though they can improve the efficiency of industry-agriculture production and the quality of
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The power quality could be polluted by the massive use of power electronic devices.The huge economic loss of the society is created by a variety of failures and accidents caused by harmonics. The harmonic suppression and reaction power compensation could be effectively provided by hybrid active power filter. Hybrid active power filter unified the advantages
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Power quality issue is increasingly prominent due to the composition changes of power systems load and the further progress of the electricity market. So great attentions have been taken to the dynamic power quality phenomenon such as voltage sag, discontinuity, which frequently and randomly occurr and have serious harm to sensitive equipments, while they became
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