New control paradigm for both islanded and grid-connected operation of PMSG-based wind turbine

Abstract

This article proposes a new control paradigm for the seamless operation of a permanent magnet synchronous generator (PMSG) based wind energy conversion system (WECS) in both islanded and grid-connected modes. Conventionally, grid-connected WECS are controlled to extract the maximum power from the wind, known as maximum power point tracking (MPPT). However, in islanded operation, the objective is to control the power generated from the WECS to match the load demand, which here is called load following power generation (LFPG). This article proposes a power management system (PMS) which integrates the MPPT and LFPG capabilities of the WECS into a single-control paradigm. This enables the WECS to seamlessly achieve MPPT in grid operation, LFPG in islanded mode and low-voltage ride-through (LVRT) during fault. The proposed scheme is validated using MATLAB/SIMULINK simulations.

Keywords

• maximum power point trackers
• power generation control
• power grids
• photovoltaic power systems
• wind turbines
• wind power plants
• permanent magnet generators
• power distribution faults
• synchronous generators
• distributed power generation
• islanded operation
• load demand
• lfpg
• power management system
• mppt
• single-control paradigm
• grid operation
• islanded mode
• low-voltage ride
• new control paradigm
• islanded grid-connected operation
• pmsg-based wind turbine
• seamless operation
• permanent magnet synchronous generator based wind energy conversion system
• grid-connected modes
• grid-connected wecs
• maximum power point tracking