B. Pollet, Mustapha Touhami, G. Despesse, F. Costa
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引用次数: 2
摘要
本文研究了盘形压电谐振腔尺寸对非隔离无电感式压电DC-DC变换器的影响。介绍了将几何参数与输出功率和效率联系起来的解析模型。这揭示了减小压电片的厚度和直径的好处。在实验工作中对5个不同尺寸的压电片进行了测试和比较,效率高达98%,输出功率高达1.7 W。在450 kHz下,在25-30伏特转换时,测量到的功率密度为366 w - cm-3,效率为81%。
Effects of Disc-Shaped Piezoelectric Size Reduction on Resonant Inductorless DC-DC Converter
This paper studies the impact of disc-shaped piezoelectric resonator dimensions on a non-isolated inductorless piezoelectric DC-DC converter. An analytical model, linking geometrical parameters to output power and efficiency is introduced. This later reveals the benefits of reducing the thickness and diameter of the piezoelectric disk. Five piezoelectric discs with different dimensions are tested and compared in experimental works, giving very high efficiency up to 98% and output power up to 1.7 W. An exceptional power density of 366 W.cm-3 was measured at 450 kHz for a 25-30 Volt conversion with an efficiency of 81%.