PROJECT TITLE :

Control Design of a PFC With Harmonic Mitigation Function for Small Hybrid AC/DC Buildings

ABSTRACT:

Unprecedented growth of native dc powered equipment (LEDs, computers, and shopper electronics) has increased business and residential dc electricity usage over the past decade. So, it is foreseeable that hybrid ac/dc buildings that includes both ac and dc infrastructures will coexist. A hybrid ac/dc building can involve an economical centralized rectifier that supplies all the dc hundreds, whereas legacy ac hundreds can remain connected to the existing ac infrastructure. This paper explores the chance of harmonic mitigation at distribution level in small hybrid ac/dc building by employing a centralized power factor corrector (PFC) with giant bandwidth. The present reference generator for the harmonic mitigation function (HMF) is explained together with power issues. The PFC uses a proportional resonant controller, instead of a PI controller, without requiring additional sensors within the rectifier. A computationally cheap implementation of the section-locked loop is also proposed together with concerns on parameter choice. The proposals provide all the steps for the straightforward control style of the PFC+HMF with fast calculations. The HMF needs solely software modifications within the PFC and one sensor to measure the nonlinear load. Simulation and experiments validate the proposed procedures.