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To improve operational flexibility, we proposed the loop or mesh structure for distribution systems using looping device called loop power flow controller (LPC) at the opened switch which can connect the adjoining feeder as an active distribution system. LPC is able to optimally control distribution systems in the points of reducing voltage rise, voltage fluctuation and loss minimum power flow control,...
To use distribution networks effectively and ensure the smooth introduction of distributed generations, a loop or mesh structure for distribution systems has been proposed using back to back type loop power flow controller (LPC) by CRIEPI. The installation space of looping equipment is restricted in power distribution systems. It is necessary to miniaturize the equipment. We developed 6.6 kV-1MVA...
We developed a 6.6-kV 1-MVA transformerless converter making use of a snubberless insulated gate bipolar transistor (IGBT) 8-series connection using an active-gate-control. The active-gate-control can balance the collector voltage of IGBTs connected in series enabling the IGBT series connection. It allows the converter to output a high enough AC voltage to directly connect to 6.6-kV distribution lines...
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