Implementation of Single-Phase PLL Based on FPGA

In this paper, Two control methods for single-phase phase-locked loop(PLL) have been studied and validated based on a system developed by field programmable gate array (FPGA). By using hardware description language verilog HDL, the cycle integrator, the PI regulator, the sine and cosine module of single-phase PLL control system have been set up. Software analysis and hardware simulation have been given to prove the phase lock function of the two methods, but EPLL has a better steady-state performance.