A Novel Compensation Scheme Based on a Virtual Air Gap Variable Reactor for AC Voltage Control

• Published in: IEEE transactions on industrial electronics (1982) Vol. 61; no. 12; pp. 6547 - 6555
• Main Authors: Avila-Montes, J., Campos-Gaona, David, Melgoza Vázquez, Enrique, Rodríguez-Rodríguez, J. R.
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.12.2014; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Air gaps; Automatic voltage control; Compensation; Control systems; DC-DC power converters; Devices; Electric potential; Electric variables control; Magnetic variables control; Mathematical models; PI control; Reactive power; Reactors; Voltage; automatic voltage control; electric variables control; magnetic variables control; Air gap; proportional¿integral control; reactive power control; dc¿dc power converters
• ISSN: 0278-0046; 1557-9948
• DOI: 10.1109/TIE.2014.2321335

Voltage control based on reactive power compensation is a fundamental aspect of the operation of ac electric power systems. This paper presents a novel shunt compensation scheme based on a virtual air gap variable reactor. The scheme is fully developed, from the adaptation of the virtual air gap principle to high-voltage applications and the determination of its expected performance, to the proposal of a digital cascade control using internal model and proportional-integral controllers. The suitability and flexibility of the device, and the voltage control and reactive power compensation scheme are verified by means of laboratory tests performed in a small-scale prototype. Measured results show that the proposed device and its control provide a robust load compensation scheme for ac systems.