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基于Y参数的压电变压器端口串-并联接特性研究

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Indexed by:期刊论文

Date of Publication:2010-09-15

Journal:大连理工大学学报

Included Journals:EI、PKU、ISTIC、CSCD、Scopus

Volume:50

Issue:5

Page Number:756-761

ISSN No.:1000-8608

Key Words:等效电路;Y参数;串-并联接;电压增益;降压

Abstract:基于压电变压器的经典集总参数等效电路模型,压电变压器串-并联接的电气特性由导纳矩阵Y参数描述,导出了电压增益、输出功率和效率与单片压电变压器的模型参数和压电变压器联接个数的关系表达式,并采用径向振动型压电变压器模型参数进行了仿真分析.测试了电压增益为0.0816、输入和输出隔离的两片降压压电变压器,在相同负载20 Ω时,端口串-并联接后的电压增益达到0.0406.计算和实验结果表明,压电变压器端口串-并联接能够进一步提升降压比.因此,压电变压器串-并联接可以作为实现降压的一种方法.

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