考虑系统不确定性的高压直流发电机控制策略

Control Strategy of HVDC Generator Considering System Uncertainty

摘要:

为满足多电飞机的供电性能需求，针对供电系统中存在的线路电缆老化、部件参数时变、大功率负载突加突卸等不确定干扰，提出了一种基于H∞混合灵敏度的鲁棒控制策略。通过状态空间方程搭建发电机数学模型，以最大化系统抗不确定性干扰能力为目标，对发电系统模型参数不确定性和外部干扰不确定性进行分析，合理的选择权函数，设计了针对高压直流飞机发电系统（HVDC）的鲁棒控制器。仿真实验表明，发电系统鲁棒控制器对不确定性因素带来的振荡具有良好的抑制效果，使系统具有较强的鲁棒性。

Abstract:

In order to meet the power supply performance requirements of multi-electric aircraft, a robust control based on H∞ mixed sensitivity is proposed in response to uncertain disturbances such as line and cable aging, time-varying component parameters, and sudden loading and unloading of high-power loads in the power supply system. Strategy. The mathematical model of the generator is built through the state space equation, with the goal of maximizing the system's anti-uncertainty interference ability, the uncertainty of the power generation system model parameters and the uncertainty of external interference are analyzed, the weight function is reasonably selected, and the design is designed for high voltage Robust controller for direct current aircraft power generation system . The simulation experiment shows that the robust controller of the power generation system has a good suppression effect on the oscillation caused by the uncertain factors, and the system has strong robustness.