A Novel Power-Based Orthogonal Signal Generator for Single-Phase Systems

Conventional orthogonal signal generators (OSGs) employed in single-phase systems exhibit significant delay tracking the original signal. To tackle this problem, an OSG with fast synchronizing speed is proposed by applying principle of power definition sinusoids. The can accurately track input less than half cycle, which one cycle faster widely used OSGs. Depending on application, be modified to meet application-based requirements. a single phase frequency locked-loop (FLL) implementation firstly introduced paper. In addition, ability low-pass filter act not just as filter, but eliminate steady-state error revealed. Through experimental comparison Park and SOGI OSG-based FLLs, it shown that FLL provides estimation angle voltage.