Permanent Magnet Synchronous Generator for Offshore Wind Energy System Connected to Grid and Battery-Modeling and Control Strategies

Abstract

This paper describes modeling and control strategies of Permanent Magnet Synchronous Generators (PMSG) connected to lithium-ion battery pack to compensate intermittent energy from wind farm. Two PMSG and battery are connected to electrical grid through a back-to-back converter, and buck-boost converter in battery’s side. Full system is connected to AC grid with phase to phase RMS voltage of 20kV. Proposed control strategies are focused on Maximum Power Point Tracking (MPPT) for PMSG speed control, active / reactive power, DC-bus voltage management and battery’s power control. To show the control strategies performances, some simulation are done using Matlab / Simulink software.