Adaptive Linear Active Disturbance Rejection Control With Deviation Differential in DC Bus Voltage of Wind Power System

Abstract

Energy shortages and environmental pollution have enabled wind power generation to develop steadily. However, during the operation of the wind power system, the dynamic performance of the DC bus voltage is often affected by disturbances from the turbine side and the grid side. In order to deal with this problem, an improve linear active disturbance rejection controller with adaptive strategy (ILADRC-FA) for grid-connected control is proposed in this paper. In this strategy, it is proposed to redefine the observation deviation of the control observer to improve the tracking accuracy of each state variable by the extended state observer (ESO), so that the controlled object can be better compensated into the integrator series type. In addition, a fuzzy adaptive strategy is introduced to optimize the dynamic response of the entire system. Then, A power hardware-in-the-loop (PHIL) experimental platform, which integrates the RT-LAB simulator and physical controller is developed in this paper to emulate the wind power system based on a permanent magnet synchronous generator. Finally, the control performance of the ILADRC-FA strategy was tested on the PHIL experimental platform to verify its correctness, effectiveness and reliability.

Keywords

• Wind power system
• dynamic performance
• linear active disturbance rejection controller
• fuzzy adaptive strategy
• differential signal
• performance analysis