Direct-through wind power generation system control

What is a direct-driven wind turbine generator?

Direct-driven wind turbine generators are generators that are directly connected to the rotor of a wind turbine. To decrease the weight of the rotor and stator yokes and to keep the end winding losses small, they are usually designed with a small pole pitch. Many different generators have been proposed as direct-driven wind turbine generators.

Can a wind energy conversion system be improved under grid fault?

The study of a Wind Energy Conversion System (WECS) based on Permanent Magnet Synchronous Generator and interconnected to the electric network is described. The effectiveness of the WECS can be greatly improved, under Grid Fault, by using an appropriate control.

How can WECs capture maximum wind energy?

So, the control strategy combines Maximum Power Point Tracking (MPPT) and a pitch control scheme to maximize the generated power. Consequently, WECS can not only capture the maximum wind energy, however it can also maintain the frequency and amplitude of the output voltage.

How to adjust WTG velocity based on instantaneous wind speed?

The control strategy can implement the theory of MPPT to adjust WTG velocity according to instantaneous wind speed. Moreover, control strategy based on Vector Control (VC) theory is applied for generator converter and for inverter.

Can WECs capture maximum wind energy based on PMSG?

Consequently, WECS can not only capture the maximum wind energy, however it can also maintain the frequency and amplitude of the output voltage. Simulation results have shown the effectiveness of the proposed control strategy for WECS based on the PMSG. Grid fault. Energy Procedia 42 ( 2013 ) 220 – 229 1876-6102 © 2013 The Authors.

What is the tip-speed ratio of a wind turbine?

The tip-speed ratio λ is given by: m R v ω λ = (2) where R and m ω are the blade length (in m) and the wind turbine rotor speed (in rad/sec), respectively.