基于单周期控制的三输入绕组开放式永磁发电机系统动态性能

Dynamic Performance of a Three Input Open Winding Generator System Based on One Cycle Control

针对可再生能源联合发电系统,采用一台绕组开放式永磁同步发电机级联多个能量源与负载,可以简化电路结构,降低系统成本。由于该系统中多源级联导致功率耦合,增加了系统电压、电流控制的复杂性,降低了各控制环路参数鲁棒性。因此提出一种单周期控制方式,不仅能够实现能量可控分配,还能有效消除了环路间的耦合,加快系统的动态响应速度。相比传统PI控制策略,单周期控制具有结构简单、动态响应速度快、无需调节器等优点。最后通过仿真和实验对比了单周期控制与传统PI控制的动态性能,证明了单周期控制的有效性。

In this paper, a new three input ports generation system with open-winding generatorfor hybrid generation system is proposed. An open-winding topology is used to simplify the structureand save the cost. However, the problem of several sources coupling results in the complicated designin controllers and worse parameter robustness. According to the system topology and control target,one-cycle control (OCC) strategy is used to improve dynamic response and weaken the couplingparameters among the multi-PI regulators. Compared to PI control strategy, OCC has the advantagessuch as simple structure, fast dynamic response and absent regulator requirement. The proposed controlalgorithm and comparison with PI control are verified by Matlab/Simulink and experiment results.