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This paper presented a grid-connected inverter incorporating multiple technical concepts like “single-stage”, “multilevel” and “transformerless”, and thus attracting in cost and efficiency. Also energy storage (ES) was integrated to assist extensive power regulation. A complete control scheme was developed to achieve wide range real/reactive power management involving pure real power, pure reactive...
This paper presents a single-stage grid-connected inverter with energy storage system (ESS) for small distributed power generation (DG) system application. A reactive power allocation (RPA) strategy is developed so the proposed inverter can provide real and reactive power in wide range. In particular, the ESS can provide not only harmonic compensation but also reactive power to enhance the system...
This paper proposed a novel hybrid asymmetric 9-level inverter in which an asymmetric 5-level inverter and an H-bridge inverter with equal DC bus voltage are series connected. A hybrid asymmetric modulation technique for the novel inverter is illustrated. In terms of the control technique adopted, the new configuration permits faster devices and higher voltage devices operating in synergism. In the...
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