Power Control of Wind-Driven Permanent Magnet Synchronous Generator

This paper discusses power control strategy for wind-driven permanent magnet synchronous generators (PMSG’s) in renewable energy systems. It compares direct power control (DPC) with field-oriented control (FOC), highlighting their impact on efficiency and stability. PMSG is directly coupled to the wind turbine and connected to the electric grid through a control system. The PMSG stator is connected to a full-scale back-to-back power converter system, consisting of an AC/DC rectifier, DC/DC converter and DC/AC grid-side converter. A 10 MW wind farm systemis modelled and simulated using MATLAB based on FOC strategy. System performance is evaluated under varying loads anddifferent wind speeds (15 and 19 m/s). The results of FOC - based on pulse width modulation (PWM) - confirm PMSG’s effectiveness in maintaining stable power output, making it a reliable choice for wind energy conversion system (WECS).