| abstract |
The invention discloses a field-weakening control strategy of a direct-drive wave power generation system based on model prediction control, which belongs to the technical field of renewable energy power generation. The invention applies the model predictive control algorithm to the direct-drive wave power generation system, takes maximizing power capture as the optimization goal, incorporates the actual physical limitations of the device into the constraints of the algorithm, and uses the known wave force data in a certain time domain in the future to predict, The optimal control quantity of the wave power generation system is obtained; and the stator current vector control scheme combined with id = 0 and field weakening control is adopted, and the d -axis current is incorporated into the control target of the model predictive control algorithm. The invention can improve the power capture performance of the direct-drive wave power generation system under the condition of satisfying the system constraints, effectively widen the operating speed range of the permanent magnet linear generator, and improve the stability of the system operation. |