Review of Controller Designs for PMSG based Wind Energy Conversion System Tied to grid along with LCL Filter
Keywords:
Wind energy, PMSG, model predictive control, maximum power point tracking (MPPT)Abstract
A review of design and analysis of the converter controller is discussed in this paper for
Permanent Magnet Synchronous Generator (PMSG) based variable speed wind turbinr which is
connected to a grid alongwith LCL filter. LCL filter reduces the harmonics injected in grid system but
also can lead to stability problem due to resonance at high frequency. Therefore the design parameters
of the controllers should be planned considering the wearing down caused by various elements of LCL
filter.
The parameters of gain controller and damping resistance can be selected by using the bode
diagram and step response. The proposed method has been implemented on the grid side controller
design for 2.5 MW PMSG based variable speed wind generator. The simulation results show that the
method is useful and good performance under wind speed variation of the control system can be
achieved.
A model of directly driven PMSG based variable-speed WECS, along with dynamic model of the
LCL filter is developed and in MATLAB/ SIMULINK environment.
