水声通信系统与一般性能评价准则（英文）

A multi-modular shunt active power filter system and its novel fault-tolerant strategy based on split-phase control and real-time bus communication

首先,提出一种适用于大容量补偿的多模块并联有源电力滤波器系统。该系统中每个模块具备相同的电路拓扑、功能及控制器设计,有助于模块间协同控制的实现。模块指令信号由总指令信号与相应的分配系数相乘所得。其次,提出一种基于a-b-c坐标系下分相控制和实时总线通讯的新型容错控制策略。当某一相发生故障时,所提策略仅隔离故障桥臂而非停运整个模块,同时重新计算分配系数,将故障相的补偿容量转移到其他正常模块的相同相,使故障模块得以持续运行以及剩余可用功率器件优化利用。故障后电路的稳态分析证明系统具备高稳定性及控制可靠性,保证其工程应用价值。最后,搭建了实验样机,实验结果验证了所提多模块系统及其容错控制策略的可行性和有效性。

We first present a new multi-modular shunt active power filter system suitable for large-capacity compensation. Each module in the system has the same circuit topology, system functionality, and controller design, to achieve coordination control among the modules. The module＇s reference signals are obtained by multiplying the total reference signal by the respective distribution coefficient. Next, a novel fault-tolerant approach is proposed based on split-phase control in the a-b-c frame and real-time bus communication. When a phase fault occurs, instead of halting the whole module, the proposed strategy isolates only the faulted bridge arm, and then recalculates the distribution coefficients and transfers the compensation capacity to the same phases of the other normal modules, resulting in a continuous operation of the faulted module and optimization of the remaining usable power devices. Through steady-state analysis of the post-fault circuit, the system stability and control reliability are proven to be high enough to guarantee its engineering application value. Finally, a prototype is established and experimental results show the validity and feasibility of the proposed multi-modular system and its fault-tolerant control strategy.