A grid-side current balance control method for a unified power quality conditioner
A technology of balance control and grid-side current, applied in the direction of circuit devices, AC network circuits, multi-phase network asymmetry reduction, etc., can solve the problems of large dynamic response speed of DC bus voltage fluctuations, poor control effect, etc., to overcome DC Large bus voltage fluctuations, improved dynamic response speed, and improved three-phase current balance
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[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, but not all, embodiments of the present invention. Based on the technical solutions of the present invention, other embodiments obtained by those of ordinary skill in the art without creative work all belong to the protection scope of the present invention.
[0026] A method for controlling the grid-side current balance of a unified power quality regulator of the present invention includes the following steps:
[0027] Step 1, convert the three-phase grid voltage v Sa , v Sb , v Sc , the three-phase load voltage v La , v Lb , v Lc , the three-phase load current i La , i Lb , i Lc From the three-phase static ABC AC coordinate system to the two-phase dq rotating coordinate system, the phase information ωt requir...
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