A novel control scheme for PMBLDC drives

Abstract

This paper aimed at a power factor correction (PFC) based novel speed control for standalone generator fed PMBLDC drives. The scheme is highly suitable for obtaining unity power factor operation in standalone generator fed PMBLDC drive, since the reference current signal in this control scheme is estimated using a frequency adaptive unit template block. The system frequency in any standalone generating system like diesel generator (DG) sets and small hydro power generation systems, is depends on loading condition of the generator. Therefore the system frequency of such system fluctuates under varying load conditions. The proposed frequency adaptive unit template based scheme is essentially required to achieve the power factor correction operation in standalone generation driven PMBLDC drives. Therefore a new PFC scheme is proposed for PMBLDC drive fed by a single phase standalone power generating system.