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Insulated gate bipolar transistors (IGBTs) are usually connected in series to form high-voltage switches in power electronics applications. However, the series operation of IGBTs is not easy due to the unbalanced voltage sharing between them, especially during the switching transients and the tail-current period. In this paper, a hybrid active gate drive is presented for both switching loss reduction...
Primary-side regulation (PSR) scheme is widely used in low-cost and low power applications such as cell phone charger and LED lighting. Generally, an auxiliary winding in the conventional flyback converter is used for both power supplier and feedback sensing. With the increase of labor cost, the transformer needs to be produced automatically. So the transformer architecture should be designed as simple...
Nowadays, the grid-connected photovoltaic systems are an important part of the renewable energy sources, and their performance is getting more and more important. Many reported researches focused on the traditional NPC topology. However, few researches were about the T-type NPC inverter. In this paper, a high power three-phase T-type neutral point clamped grid connected photovoltaic inverter prototype...
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