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This invention describes a control system for wind turbines that can change their speed. It uses a special electronic converter to take the power generated by the turbine, convert it to DC, and then convert it back to AC for the electrical grid. The system specifically manages voltage components to control both the real power sent to the grid and the reactive power absorbed from it, aiming to keep the DC voltage stable and the converter efficient.
Why it matters: Since 2008, advancements in power semiconductor technology have made high-power, high-frequency PWM converters more efficient and compact. Real-time control processors have also become far more powerful and cost-effective, enabling more sophisticated control algorithms than was feasible or economical when this was filed.
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