Employing a Reduced Component Count Inverter Fed by Multiple Sources for Grid Support

Inhalt:
Modern power systems are experiencing a shift from centralized to decentralized generation, incorporating various renewable energy sources and new technologies. Inverter technologies, such as multi-input converters, are essential for integrating these new energy sources into both on-grid and offgrid systems. Additionally, maintaining frequency and voltage regulation, as well as providing dynamic security support, is critical. This paper deals with the analysis and control of a reduced component-count inverter that can integrate multiple independent sources, accommodating the characteristic voltage variations from photovoltaic systems, fuel cells, and batteries. The nine-switch multi-input split-source inverter (9S-MISSI) merges the inversion and boost stages into a single power conversion stage, also enabling bidirectional operation. An analysis of inverter constraints is carried out, and simulation results are presented to demonstrate the performance of the proposed topology and control strategy.