基于压电变压器的低压电源的设计

Low Electrical Source Design with Piezoelectric Ceramic Transformer

归纳总结了压电变压器的特点及应用领域,指出压电变压器作为一种新型的变压器,具有无电磁干扰、功率密度大、转换效率高、体积小、无噪声等特点,弥补了传统电磁变压器的一些不足,并提出了谐振状态下和非谐振状态下小升压比型压电变压器低压电源的设计方法。

Piezoelectric ceramic transformer is a new kind of electronic transformer which has low electromagnetic interference, big power density, high transfer efficiency, small in size and light in weight, no noise etc, and these characteristics are superior to traditional electromagnetic transformer. This paper summarizes the capability and the application of piezoelectric ceramic transformer and puts forward two methods of design about the power supply with low output voltage. One is to use the small transfer ratio at resonant frequency; other is use the small transfer ratio at non-resonant frequency.