THE REGULATOR OF SPEED OF DOUBLE FEED INDUCTION GENERATOR

资 源 简 介

THE REGULATOR OF SPEED OF DOUBLE FEED INDUCTION GENERATOR

详 情 说 明

The speed regulation of a double-fed induction generator (DFIG) is crucial in wind energy applications where maintaining stable rotational speed despite variable wind conditions ensures efficient power generation. A DFIG’s unique design allows its rotor to be fed with a controlled AC supply via slip rings, enabling adjustable speed operation while the stator directly connects to the grid.

The regulator’s core function involves: Rotor-Side Control: Adjusts the rotor current’s frequency and phase using power electronics (e.g., back-to-back converters) to manage torque and synchronize with grid requirements. Feedback Loops: Uses sensors (e.g., encoders) to monitor rotor speed, comparing it to a reference value and correcting deviations via PI/PID controllers. Grid Synchronization: Ensures the stator’s output matches grid voltage/frequency, with reactive power support for stability.

Challenges include handling rapid wind speed changes and fault ride-through capabilities. Modern systems integrate MPPT (Maximum Power Point Tracking) algorithms to optimize energy capture while adhering to grid codes.

This technology enhances wind turbine efficiency, reduces mechanical stress, and supports grid stability—key for renewable energy integration.