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The utility-scale renewables, PV and wind, are already approaching grid parity. To further enhance their penetration rapidly requires additional cost reduction and increased efficiency. There are other applications in utility-scale energy storage systems and in substations with power ratings in MW range for rapid charging of multiple electric vehicles. Towards this goal, one approach to interface...
This paper proposed a new Power Electronic Transformer (PET) topology in medium and high voltage application of 3-phase AC distribution network. In the proposed topology, diode clamped multilevel converter is used as the rectifier stage, and input series output parallel (ISOP) Dual Active Bridges are adopted for isolated voltage conversion. The proposed topology is suitable for medium and high voltage...
The current project was originally initiated by the marine industry, where bulky low-frequency transformers have become a growing problem and the need for a more flexible solution is growing. The active power electronic transformer (APET) is likely to be the most suitable candidate. Modular power electronic building blocks (PEBB) enable complex power electronics systems to be built and reconfigured...
In this paper a dynamic voltage restorer (DVR) circuit with a bi-directional power electronic transformer (PET) structure is proposed to correct input utility voltage distortions on a sensitive load. This DVR-PET contains full-bridge DC-link inverter (FBDCI), high frequency isolating transformer (HFIT), cyclo-converter and output filter. A phase shift modulation (PSM) control scheme is used to regulate...
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