多通道并联无线岸电系统扰动抑制技术研究

输入输出均并联型多通道无线岸电系统可通过模块化叠加实现舰船岸电大功率传输，解决单通道功率受限问题. 但在模块生产、安装及运行过程中难免产生参数差异和扰动，进而将引起岸电输出电压不稳定，影响无线岸电系统可靠运行. 为此，首先给出多通道并联无线岸电系统电路拓扑，建立了以逆变器移相角为输入、目标负载功率为输出的多通道并联无线岸电系统模型，采用能量?相角的方法降低系统阶数，建立系统小信号模型，基于Trapezoidal阶梯双线性逼近法设计了系统控制器，分别研究通道耦合器参数差异、系统直流输入电压扰动、负载扰动三种工况，通过Matlab仿真和实验验证了参数差异及参数扰动下控制器效果，结果表明控制器在三种扰动工况下均有较好的控制效果，保证了多通道岸电系统的稳定运行，该技术对大功率无线岸电系统的设计与应用提供了技术支撑. 

Multi-Channel Wireless Shore Power System and Ship-Shore Cooperative Grid Connection Control Research

The multi-channel wireless shore power system with both parallel input and output can realize high-power transmission of ship shore power through modular superposition, and solve the problem of single-channel power limitation. However, some parameter differences and disturbances occurred in the process of module production, installation and operation will cause instability of the shore power output voltage and affect the reliable operation of the wireless shore power system. To solve this problem, a circuit topology was proposed firstly for the multi-channel parallel wireless shore power system. And then, taking the inverter phase shift angle as the input and the target load power as the output, a multi-channel parallel wireless shore power system model was established. Using a energy-phase angle method to reduce the system order, a small signal system model was established. Based on the Trapezoidal step bilinear approximation method, a system controller was designed to analyze the parameter differences of the channel coupling, DC input voltage and load disturbance separately. Finally, Matlab simulation and experiment were carried out to validate the control effect under the three disturbance conditions. The results show the better control effect of system controller, which can make a stable operation of the multi-channel shore power system. As a technical support, the proposed method is suitable for high-power wireless design and application of shore power system.