飞机地面电源线缆压降的补偿控制策略

Compensation Control Strategy for Voltage Drop of Aircraft Ground Power Cables

地面移动电源在为飞机供电时,由于输电线缆阻抗造成电压跌落,无法为飞机提供可靠稳定的电压,基于此,在此提出了一种具有电压补偿特性的逆变器控制。该控制运用电压补偿环、电压外环与电流内环进行控制。内外环采用传统PI控制,电压补偿环采用线缆补偿电压前馈的控制策略,提高逆变器系统输出电压,从而进行线缆电压补偿。实现了对线缆电压跌落的补偿,达到了为飞机设备提供115 V/400 Hz的用电要求,确保飞机上的负载在额定电压下运行。通过理论分析、仿真和实验验证,验证了所提控制策略的可行性和正确性。

In the process of aircraft power supply from the ground mobile power supply,the voltage drop is caused by the impedance of the transmission cable and the operation of the aircraft under different loads.Moreover,there is no voltage compensation device,which cannot provide the aircraft with reliable and stable accurate voltage.To solve this problem,an inverter control strategy with voltage compensation characteristics is proposed.The control strategy is controlled by voltage compensation loop,outer voltage loop and inner current loop.The inner and outer ring adopts the traditional PI control,and the voltage compensation ring adopts the control strategy of cable compensation voltage feedforward to improve the output voltage of the inverter system,so as to compensate the cable voltage.The compensation of cable voltage drop is realized to meet the requirements of aircraft equipment to provide 115 V/400 Hz electricity,ensuring that the equipment on the aircraft operates at rated voltage.The feasibility and correctness of the proposed control strategy are verified by theoretical analysis,simulation and experimental verification.