Modified Modeling and System Stabilization of Shunt Active Power Filter Compensating Loads with F Capacitance

作者：Bing, Yuqi^*; Jiang, Daozhuo; Liang, Yiqiao; Jiang, Chongxi; He, Tianxiang; Yang, Lei; Hu, Pengfei

来源：Energies, 2019, 12(11): 2084.

DOI：10.3390/en12112084

• Active power filter (APF)
• digital hybrid repetitive control
• modeling of grid-connected inverters
• stability analysis
• system stabilization

The interactions between shunt active power filter (APF) and capacitance load tend to result in stability problems and resonance. The conventional model of a shunt APF is not precise enough to reflect this phenomenon. To address it, this paper proposes a modified shunt APF system model to accurately reflect various stability problems. This paper also studies the mechanism of positive feedback resonance brought by capacitance load and proposes a modified hybrid controller to improve the stable margin of the system, making the shunt APF work stably under different working conditions where there are F capacitors on the demand side. The correctness and validity of the proposed strategy are verified by simulation analysis and prototype experiments.

• 单位
  浙江大学; 电子科技大学