Title :
Zero-order three-phase phase-locked loops
Author :
Losic, Novica A.
Author_Institution :
Honeywell Ltd., Markham, Ont., Canada
Abstract :
A method of minimizing dynamics and reducing phase error towards zero for arbitrary input frequency/phase while maintaining stability in three-phase phase-locked loops is presented. Theoretically, the system transfer function becomes of zero order and the error is zero. Practically, the steady state phase error is zero and the system is of minimum dynamics/order. The method is in synthesizing a feedforward control that is added to the standard three-phase phase-locked loop. The feedforward comprises an inverse feedforward control principle relative to the part of the feedback loop seen after the summing junction.
Keywords :
feedforward; minimisation; phase locked loops; stability; transfer functions; feedforward control; phase error reduction; stability; steady state phase error; system transfer function; three-phase phase-locked loops; zero order; Control systems; Error correction; Frequency; Phase estimation; Phase locked loops; Stability; Steady-state; Transfer functions; Voltage control; Voltage-controlled oscillators;
Conference_Titel :
Industrial Electronics Society, 2003. IECON '03. The 29th Annual Conference of the IEEE
Print_ISBN :
0-7803-7906-3
DOI :
10.1109/IECON.2003.1280721