| 摘要 |
The invention relates to electric engineering and may be used for enhancement of electric energy quality by active removing of undesired current components. The proposed active filter comprises two inverters with DC links, an interface filter in every phase and a control circuit. The said interface filter presents as T-like circuit comprising two chokes, series connected, and a capacitor, output of the first inverter is connected to loose end of the first choke, output of the second inverter is connected to a point of choke connection via a capacitor, loose end of the second choke is connected to the power supply network, links of DC inverter is divided. Application of the proposed circuit design of active filter allows increasing quality of high harmonics filtration of nonlinear loads, reducing level of electromagnetic noise and increase quality of mains voltage. |
