Posicast-based control of a thyristor rectifier equipped with an LCL filter

Abstract

This paper presents Posicast controller within a feedback loop for transient response improvement of a thyristor rectifier equipped with an LCL filter. The proposed controller reduces the system response oscillations by shaping and delaying the reference input. Furthermore, an integrator is introduced to decreases Posicast controller sensitivity to parameter variations and plant model mismatch. Response of the system for various values of load is examined and simulation results confirm accuracy of the proposed controller.