Mathematical Modeling and Control Algorithms of STATCOMs

Abstract

In this chapter, different STATCOM control algorithms will be introduced. The algorithms are derived on the basis of STATCOM mathematical models in the α-β coordinate system and in the synchronously rotating d-q coordinate system. In the first part of the chapter, both mathematical models are derived from the threephase STATCOM model, and the mathematical process is described in detail. In the second part, four different control algorithms are described: d-q control algorithm for balanced and unbalanced conditions, time-optimal current-control algorithm and Proportional-Resonant (PR) multi-loop controller.