Direct Output Voltage Control Strategy for STATCOM Based on Multi-model and Neural Network PI Controller

Aiming to deal with the voltage control problems and the limitations of the conventional PI controller in the Static Synchronous Compensator (STATCOM), a direct output voltage control strategy based on multi-model and neural network PI controller is proposed. This control scheme applied the multi-model and neural network technology to the PI controller to meet the accuracy and speed of the voltage control under different impact loads. Meanwhile, the neural network technology was used to tune the PI controller parameter values according to an optimal control law, which can meet the requirements of full range working conditions and optimality. Simulation experiments show that compared to the traditional PI controller, PI controller based on multi-model and neural network is proved to be better capable of adapting to the change of voltage with a higher compensating precision.