a new circuit topology of a

phase-locked loop that can be used for synchronising a singlephase

wind turbine generator (WTG) with the low voltage utility

grid. The circuit is based on the time-delay digital tanlock loop

(TDTL) architecture and was modelled and simulated using

Simulink/MATLAB. The results presented demonstrate the

ability of the circuit not only to synchronise a WTG with the grid,

but also to re-gain synchronization following a sudden

disturbance in the grid voltage. The simulated disturbances

included a ramp and a multi-step change in the phase of the grid

voltage waveform.