Multiresonant corrector for active filter

The drive of electrical systems often needs the control of alternative quantities. This paper presents a solution based on the introduction of resonant elements in a corrector. The chosen application is the control of an active filter which requires the regulation of harmonic currents. The authors first establish the process model by using an original method called the 'causal ordering graph'. The control design is then deduced by inversion of the model. The computation of corrector parameters is then presented and experimental results confirm the accuracy of the whole method.