Active Power Decoupling Based on Input Current Ripple Control for Single-Phase Voltage Source Inverter

Konferenz: PCIM Asia 2023 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
29.08.2023-31.08.2023 in Shanghai, China

doi:10.30420/566131066

Tagungsband: PCIM Asia 2023

Seiten: 8Sprache: EnglischTyp: PDF

Autoren:
Jiang, Xun; Mao, Meiqin; Cheng, Wei (Research Center for Photovoltaic System Engineering of Ministry of Education, Hefei University of Technology, China)
Chang, Liuchen (University of New Brunswick, Canada)

Inhalt:
An inherent low-order ripple power problem caused by the instantaneous ac and dc power imbalance exists in single-phase photovoltaic (PV) inverters. This problem is usually addressed through paralleling large-capacity electrolytic capacitors. In recent years, there have been a lot of studies on using active power decoupling circuits to reduce the capacitance of capacitors, but most of them require complex mathematical derivations to generate accurate decoupling capacitors voltage references or to obtain accurate system predictive models, which are weakly robust to parameter drifting. Therefore, an active power decoupling algorithm based on input current ripple control is proposed in this paper. By the proposed method, the dc and ac power is controlled directly, so that the accurate active power decoupling can be realized with strong robustness in parameter drifting. The effectiveness of the proposed control method is verified by the simulation and experiments based on a hardware-in-the-loop simulation platform and the prototype of a 1kW single-phase voltage source inverter.