Software Phase-Locked Loop based on Virtual Three-Phase for Power Grid | Zendy

Junxiang Pei | Zendy; Hongtao Shan | Zendy

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Software Phase-Locked Loop based on Virtual Three-Phase for Power Grid

Author(s) -

Junxiang Pei,

Hongtao Shan

Publication year - 2016

Publication title -

international journal of computer applications

Language(s) - English

Resource type - Journals

ISSN - 0975-8887

DOI - 10.5120/ijca2016908424

Subject(s) - computer science , loop (graph theory) , grid , software , phase (matter) , power grid , phase locked loop , power (physics) , three phase , electrical engineering , operating system , telecommunications , voltage , physics , geometry , mathematics , combinatorics , quantum mechanics , jitter , engineering

How to complete the phase-locked quickly and accurately is a basic key technology in the grid-connected inverter. Compared to the typical phase locking method with zero crossing, synchronous coordinate system software phaselocked loop (SPLL) has an advantage of easy to achieve, faster dynamic response, etc. This paper studied a strategy for applying the SPLL to the single phase grid-connected inverter. Firstly, use the virtual three-phase method to convert the single-phase voltage into three-phase balanced voltage. Then complete the software phase-locked with vector decoupling method in the synchronous coordinate system. Each simulation parameter of actual control system was calculated by tuning parameters of the regulator. The feasibility of this method is verified by experiment.

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