Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/13510
Title: A novel method for connecting multiple piezoelectric transformer converters and its circuit application
Authors: Ye, Y
Cheng, KWE 
Ding, K
Keywords: Bootstrap
Dc-dc converter
Electrical model
Multilevel
Piezoelectric transformer (PT)
Issue Date: 2012
Publisher: Institute of Electrical and Electronics Engineers
Source: IEEE transactions on power electronics, 2012, v. 27, no. 4, 6036182, p. 1926-1935 How to cite?
Journal: IEEE transactions on power electronics 
Abstract: The electrical circuit and model of piezoelectric transformers (PTs) ELS-60 is developed. Rosen-type PT and many other nonisolated conversion circuits have the inherit problem of the common neutral between the input and output that make it difficult to connect the output in series like the magnetic transformer. A new method based on the bootstrap method is proposed to solve the aforementioned problem. A new circuit for output summation of voltage level in the output side of each PT is developed. The impact of load and output filter capacitor on the conversion ratio and resonant frequency is discussed. Experimental results based on one printed circuit board prototype of double-level PT and boost convertor validate the previous theoretical analysis and simulation results. The paper finally proposes a multilevel concept for many PT connected together for voltage summation. The method proposed can be applied to other multiple conversion circuits, which are based on common neutral between the input and output.
URI: http://hdl.handle.net/10397/13510
ISSN: 0885-8993
EISSN: 1941-0107
DOI: 10.1109/TPEL.2011.2171007
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