This method using dual-source induction generator rotor windings (Doubly fed induction machine). The adjustment was made through the adjustment of electric current in the rotor when the rotor windings are connected indirectly with the grid through the filter and the adapter. Then players can receive or power transmitter, meaning air can enter the system stable and allow grid support throughout the process of oscillating grid voltage. Inverters (converter) is also used to stabilise the frequency at the output.
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