Power quality control

An integrated power quality control system (60) includes a transformer (62) with a primary winding (64), a secondary winding (66, 74) and a compensation winding (68, 75) wound on a magnetic core (158). A power electronic converter (78) in the system provides a reference voltage to the compensation winding (68, 75) for injecting a series voltage in the secondary winding (66, 76) of the transformer. A controller (80) is utilized to generate the reference voltage for the power electronic converter (78) based on a power quality control requirement.