|
Reference power extraction based MPPT technique with enhanced real and reactive power flow control for grid connected DFIG |
|---|---|
| รหัสดีโอไอ | |
| Creator | 1. D.V.N. Ananth 2. G.V. Nagesh Kumar |
| Title | Reference power extraction based MPPT technique with enhanced real and reactive power flow control for grid connected DFIG |
| Publisher | School of Renewable Energy Technology |
| Publication Year | 2558 |
| Journal Title | International Journal of Renewable Energy |
| Journal Vol. | Vol. 10 |
| Journal No. | No.1 |
| Page no. | 47-65 |
| Keyword | Doubly Fed Induction Generator (DFIG), maximum power point tracking (MPPT), real and reactive power control, Rotor & grid side converter (RSC & GSC), wind energy conversion system (WECS) |
| ISSN | 1905-7172 |
| Abstract | Doubly Fed Induction Generator (DFIG) needs to get adopted to change in wind speeds with sudden change in reactive power or grid terminal voltage as it is required for maintaining synchronism and stability as per modern grid rules. This paper aims to design controller for DFIG converters and MPPT for turbine to maintain equilibrium in rotor speed, generator torque, and stator and rotor voltages and also to meet desired reference real power during the turbulences like sudden change in reactive power or voltage with concurrently changing wind speed. To achieve better power extraction from turbine, maximum power tracking algorithm was designed which changes blade angle and improves the coefficient of power extracted from turbine. To meet desired real power from generator, Rotor Side Controller (RSC) is designed which keeps rotor to rotate at optimal speed and to vary current flow from rotor and stator terminals. Grid Side Converter (GSC) helps in tracking reactive power demand from grid and also helps in maintaining synchronism when grid voltage changes due to fault, at a very faster and stable way. Parameters like tip speed ratio, coefficient of power, stator & rotor voltage, current, real & reactive power, rotor speed and electromagnetic torque are studied using MATLAB simulation. The performance of DFIG is compared when there is wind speed change only, alter in reactive power and variation in grid voltage individually along with variation in wind speed. |
