W dt qr R



T2 s

Utxm, qr

Fig. 4. Block diagram of real power control system in rotor-side converter


T2 s

Fig. 5. Block diagram of reactive power control loop in rotor-side converter

Similarly, the corresponding stator reactive power control model can be described as dh

So far, based on the stator flux-oriented control strategy, and considering the decoupled control of the real and reactive power outputs of DFIG, the whole reduced practical electromechanical transient DFIG model consists of the following 7th order model

ds X

dt X

dt Tr Xr dddf = KUq^ (A-Tr)I,r + KUqsXrA Udr -+ Q^f) (42)

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Renewable Energy 101

Renewable Energy 101

Renewable energy is energy that is generated from sunlight, rain, tides, geothermal heat and wind. These sources are naturally and constantly replenished, which is why they are deemed as renewable. The usage of renewable energy sources is very important when considering the sustainability of the existing energy usage of the world. While there is currently an abundance of non-renewable energy sources, such as nuclear fuels, these energy sources are depleting. In addition to being a non-renewable supply, the non-renewable energy sources release emissions into the air, which has an adverse effect on the environment.

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