| Abstract |
The paper presents a passivity–based controller for Distribution Static synchronous Compensator (D–Statcom)
aimed to compensate reactive power and unbalanced harmonics in the general case of distorted and unbalanced
source voltages and load currents. The proposed approach is based on the measurements of line
currents, and ensures precise compensation for selected harmonics. Moreover, in order to compensate for
the unavoidable uncertainty in certain system parameters, adaptation is added to the passivity–based controller.
One of the major advantages of the proposed solution compared to conventional alternatives is that
we are able to perform precise tracking (including higher order harmonics) even in the presence of a relatively
low switching frequency, i.e., in presence of an inverter with limited bandwidth. Simulation and
experimental results are provided to illustrate the merits of our solution. |
