In this paper, an integrated ROM‐based current controller is proposed for a three‐phase advanced static reactive power source to achieve such high performance as a clean sinusoidal input line current, continuously adjustable reactive power output capability and a system insensitive to input voltage distortion. Three control schemes are proposed and integrated in the same controller. In addition to the basic scheme, there are two other schemes for either reducing by almost half the switch loss or enhancing the availability of the reactive source when one arm of the converter fails. The space vector representation technique is then used to greatly simplify the modeling process. A small signal is derived and open loop stability analysis is made as well. Finally, a prototype hardware circuit is implemented to verify the validity of the proposed current controller.