全数字化特种电源实时并机系统研究

Research on Full Digital Real-time Parallel Controller for Special Power Supply

在分析数字化并机网络拓扑结构及CAN总线延时的基础上,针对特种电源需要均流精度高,信号抗干扰强等特点设计了基于CAN总线结构的全数字化实时并机控制系统。采用实时操作系统提高了系统的数据处理能力,并在网络利用率最大化前提下,通过加入备用机控制算法,提高系统的稳定性和输出功率的上限。最后,采用ARM芯片设计了数字化实时并机系统,并在两台25 kW的特种电源样机上进行了均流特性和实时性实验,实验结果验证了该系统的可行性。

Based on the analysis of the network topology structures for digital parallel control and time delay characteristic of CAN bus, a CAN network structure based full digital parallel controller for special inverter systems is proposed to satisfy such requirements as perfect current sharing performance,good anti-jamming capability,and so on. The real-time operating system is adopted to improve the system data processing ability, and on the back of maximizing the network utilization, the algorithm of backup supply power control is added to improve the system stability and the maximum output power.Finally,by using ARM microchip,the full digital real time parallel control system is developed, and the current sharing and real time ability experiments are carried out by using two 25 kW special inverter prototypes.The experiments indicate that the system design is feasible.