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As one of the most effective methods to inhibit electric power grid harmonics, the technology of Active Power Filter (APF) has been a key subject in the field of power quality control. Currently, research on APF mainly focuses on topology structure and control strategy. A novel topological structure of APF in alpha-beta coordinate is presented based on transformation of three phase static A-B-C coordinate...
The grid-connected issue is one of the most importance problem in the photovoltaic generation field. The filter used to connect the grid can be L, CL, LC or LCL four forms according to the different conditions. LCL filter, which can reduce the required filtered inductance and save the cost, is adopted to connect the grid in this paper. This paper firstly introduces a whole scheme of LCL filter design,...
As the traditional resources have become rare, photovoltaic generation is developing quickly. The grid-connected issue is one of the most importance problem in this field. The voltage source inverter usually uses LC or LCL as the filter. LCL filter, which can reduce the required filtered inductance and save the cost, is adopted to connect the grid in this paper. However, reasonable design of LCL filter...
Unified Power Flow Controller (UPFC) is regard as the most representational device in the field of Flexible AC Transmission System (FACTS). In order to further study operation mechanism and physical characteristics of UPFC, a set of electric quantity test system is developed based on a 10KVA UPFC model, and the acquisition, storage, display and analysis of all electric quantity data are realized....
A novel topological structure of Active Power Filter (APF) in alpha-beta coordinate is presented based on transformation of three phase static A-B-C coordinate to two phase static alpha-beta coordinate. The topological structure adopts two groups of single-phase inverter as main devices of APF, and can realize transformation of current source from two phases to three phases by using a special transformer...
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