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Energy conservation is a big concern issue. Especially, various traditional lighting devices are being replaced by LED lights that offer advantages including low pollution, low energy consumption, and long life. This paper presents a design for street lighting that includes a high-power LED series as a light source. An LED driver was built up by combining a buck-boost converter and a forward-flyback...
Conduction loss, which is greatly affected by transformer stray capacitance, has a huge influence on the efficiency of LLC resonant converters. The reason is that different transformer stray capacitance means different winding charge or discharge during the dead time, and then the magnetizing current and the dead time are changed accordingly. In order to investigate the impact of transformer stray...
The Y-source converter is one of the recent proposed impedance source converters. It has some advantages as having a high voltage gain between the input and output voltage sides using very small duty cycle ratios. For many applications, the input voltage needs to be boosted to higher output voltage, such as for fuel cell, battery electric vehicles and renewable energy applications. Understanding the...
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