Direct and efficient neuro-controlled three-phase PFC in ABC frame

Performance criteria of three-phase boost rectifiers improve significantly with increasing the switching frequency, and highly depend on the control strategy used. This paper introduces a simple and fast control strategy for three-phase boost rectifiers. The proposed method maintains the advantages of the other schemes, including high efficiency, fast dynamic response, unity power factor, sinusoidal input currents and regulated output voltage. In particular, by the introduction of a modified vector classification algorithm nonlinear function generations, and also abc-dq and dq-αβ transformation carried out in conventional SVM-based strategies are avoided. Therefore, there is no need for current regulators in the d-q frame, and control difficulties associated with them are removed. In addition, proposed scheme needs no current sensor and extra calculation for identification the highest current carrying phase that must not be switched. Moreover, to reduce the switching and conduction losses a novel switching pattern is presented in this paper. Simulation results on PSCAD/EMTDC software program confirm the validity of the analytical work.