Control Strategies for Permanent Magnet Synchronous Generator-Based Wind Energy Systems

The increasing deployment of permanent magnet synchronous generator (PMSG) turbines has driven the development of advanced control strategies spanning energy capture, grid integration and fault resilience. The core control architecture comprises a back-to-back converter interfacing the generator with the grid, with independent machine-side and grid-side controllers. On the machine side, maximum power point tracking algorithms regulate torque or speed references to extract peak energy under variable wind conditions. Concurrently, grid-side controls manage the DC-link voltage and reactive power injection to meet grid-code requirements, including low-voltage ride-through (LVRT) and fault ride-through (FRT). Advanced model-based methods such as predictive control and sliding mode control enhance dynamic response and robustness against disturbances. Coordinated schemes integrate energy storage systems and pitch adjustment to smooth power fluctuations and optimise rotor speed. Emerging trends include adaptive, data-driven and hybrid control approaches that self-tune to operating conditions, reducing dependence on exact system models. Demonstrations in simulation and real-time hardware-in-the-loop platforms confirm marked improvements in efficiency, grid support and reliability. Collectively, these research strands underline the global significance of robust control frameworks in facilitating large-scale renewable integration while maintaining power quality and network stability.

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Control Strategies for Permanent Magnet Synchronous Generator-Based Wind Energy Systems publication trend

The graph below shows the total number of articles in control strategies for permanent magnet synchronous generator-based wind energy systems across all publications each year (not limited to Nature Index journals).

Technical terms

PMSG: A synchronous generator in which the rotor is endowed with permanent magnets to produce the excitation field.

MPPT: A control algorithm that optimises power extraction by adjusting generator or converter setpoints to follow the maximum power point.

LVRT: The capability of a wind turbine to remain connected and support the grid during voltage dips without tripping.

FRT: Strategies that enable turbines to sustain operation and manage surplus energy during grid faults or voltage disturbances.

Sliding Mode Control: A robust control technique that drives system trajectories to a predefined sliding manifold to ensure performance under uncertainty.

DC-link Voltage: The intermediate voltage across the energy storage capacitor between machine-side and grid-side converters in a back-to-back system.

References

1. Super‐Twisting Sliding Mode Control for Gearless PMSG‐Based Wind Turbine. Complexity (2019).
2. Enhanced Low-Voltage Ride-Through Coordinated Control for PMSG Wind Turbines and Energy Storage Systems Considering Pitch and Inertia Response. IEEE Access (2020).
3. Coordinated Fuzzy-Based Low-Voltage Ride-Through Control for PMSG Wind Turbines and Energy Storage Systems. IEEE Access (2020).
4. Evaluation and Comparison of Different Methods for Improving Fault Ride‐Through Capability in Grid‐Tied Permanent Magnet Synchronous Wind Generators. International Transactions on Electrical Energy Systems (2023).