A three-phase active power filter based on the space vector theory

The three-phase active power filter, which bases on generalized instantaneous reactive power theory, has simple control and calculation principle, and it can effectively simplify instruction current calculation and applies in asymmetry and mutation network. However, this controlling method is also complicated, because of the higher-class filter and the constraint of the calculation speed. This article further generates a brand new controlling calculation for three-phase power filter that is built on the space-vector theory. Besides all the same advantages, it can also further decrease the low-pass filter classes, lower the addition and multiplication calculating times, and improve the calculation speed. Adopting the same circuit parameter, this kind of filter could gain the better compensation efficiency, and it outputs lower harmonic current. The simulation result proves it has fabulous static and dynamic compensation properties and practical values.