Closed loop control strategy of back to back PWM converter fed by PMSG using PLECS toolbox on Matlab/Simulink for wind energy application

This paper presents an alternative closed-loop control strategy approach of back to back two-level voltage source converter to regulate the dc link voltage. Both rotor speed of the Permanent Magnet Synchronous Generator (PMSG) side and the DC-link voltage of load side are controlled by a PI controller. Modeling and simulation of the control structure has been carried out using PLECS toolbox on Matlab/Simulink environment. PLECS is a software package for modeling and simulating dynamic systems. It is preferable for high-speed simulations of circuit-oriented electric and electronic systems. The validity and performance of the proposed control scheme has been verified by simulation results and is in agreement with what is expected. The simulation results demonstrate that the controller is capable of maintaining constant dc-link voltage under dynamic and steady-state performance of the system.