Combined PWM and PFM control for universal line voltage of a piezoelectric transformer off-line converter

被引：33

作者：

Hamamura, S ^{[1
]}

Ninomiya, T

Yamamoto, M

Katsuno, M

机构：

[1] NEC Engn Ltd, Devices Dev Dept 2, Media Network Div, Kawasaki, Kanagawa 2118666, Japan

[2] Kyushu Univ, Dept Elect & Elect Syst Engn, Grad Sch Informat Sci & Elect Engn, Fukuoka 8128581, Japan

[3] NEC Corp Ltd, Funct Mat Res Labs, Funct Devices & Mat Res, Kawasaki, Kanagawa 2168555, Japan

[4] NEC Tokin Corp, Tech Dev Dept, Piezoelect Devices Div, Funct Devices Operat Unit, Sendai, Miyagi 9828510, Japan

来源：

IEEE TRANSACTIONS ON POWER ELECTRONICS | 2003年 / 18卷 / 01期

关键词：

converter; input voltage; output voltage; printed circuit board; PT;

D O I：

10.1109/TPEL.2002.807177

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A new control method for an ac/dc converter using a piezoelectric transformer is presented. The combination of pulse width modulation and pulse frequency modulation makes it possible to control the output voltage, and its adaptability to a worldwide range of input voltage variation. The ac/dc converter implemented on a printed circuit board is experimentally evaluated, and as a result, good controllability is successfully achieved. The highest efficiency of 86% was obtained at an input voltage of ac 90-270 V, output voltage of 17 V, load current of 0.57-1.4 A, and operating at frequencies around 107 kHz.

引用

页码：270 / 277

页数：8

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