Current control of unbalanced electrical systems
Current control of unbalanced electrical systems
复制标题
DOI：
10.1109/41.925578
复制
发表时间：
2001-06
期刊：
影响因子：
--
通讯作者：
C. Jacobina;M. Corrêa;T. M. Oliveira;Antonio M. N. Lima;E. R. C. Silva
中科院分区：
文献类型：
--
作者：
C. Jacobina;M. Corrêa;T. M. Oliveira;Antonio M. N. Lima;E. R. C. Silva
采用矢量建模的方法描述了不平衡三相(三线制)、不平衡两相和单相系统的行为。在单相系统的情况下，引入虚拟电路来创建矢量模型。提出了基于矢量法的连续时间和离散时间电流控制器。目前的控制方案基于两个控制器，一个用于正序，另一个用于负序。控制器在同步参考系和静态参考系中实现。在静止坐标系下，两个控制器采用相同的积分增益，简化了控制律的方程，特别是对单相系统。给出了用脉宽调制电压型逆变器为不平衡系统供电的仿真和实验结果。
The vector modeling approach is employed to describe the behavior of unbalanced three-phase (three-wire), unbalanced two-phase and single-phase systems. In the case of single-phase systems, a fictitious circuit is introduced in order to create the vector model. Continuous-time and discrete-time current controllers based on the vector approach are presented. The current control scheme is based on two controllers, one for the positive sequence and another for the negative sequence. The controllers are implemented in the synchronous reference frame and in the stationary reference frame. In the stationary reference frame, the use of the same integral gains for both controllers simplifies the equations of the control law especially for single-phase systems. Simulation and experimental results obtained with a pulsewidth modulation voltage-source inverter supplying unbalanced systems are presented.