Parallel connection type active power filter
A power filter and parallel technology, which is applied in active power filtering, harmonic reduction devices, and AC networks to reduce harmonics/ripples, etc., can solve the problem of no operation monitoring and guarantee system, high operation risk, and impact on response speed. and other problems, to achieve complete and effective protection measures, ensure system security, and achieve the effect of simple and convenient operation.
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[0027] The present invention will be further described below in conjunction with a shunt active power filter for three-phase power grid constructed using the idea of the present invention provided by a preferred embodiment of the present invention and the accompanying drawings.
[0028] The preferred embodiment of the present invention provides a parallel active power filter for three-phase power grid constructed by adopting the idea of the present invention, as shown in the attached figure 1 , attached figure 2 , attached image 3 , attached Figure 4 , attached Figure 5 As shown, it includes a current acquisition unit 1, a voltage acquisition unit 2, an IGBT drive unit 3, an IGBT switch unit 4 and a grid-connected access unit 5. Since this preferred embodiment is a parallel active For this reason, the current acquisition unit 1, the voltage acquisition unit 2, the IGBT drive unit 3, the IGBT switch unit 4 and the grid-connected access unit 5 all include three indepe...
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