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热声发电系统最大电能输出阻抗匹配及机械谐振特性分析

DOI: 10.13334/j.0258-8013.pcsee.2015.22.027, PP. 5908-5914

Keywords: 热声发电系统,最大电能输出,阻抗匹配,机械谐振,劲度系数

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Abstract:

为获得热声发电系统最大电能输出和声功捕获,该文以横向磁通永磁直线发电机为例,采用力-电类比法建立热声发电系统等效模型,研究电磁力、次级速度与阻抗之间的关系,推导热声发电系统等效阻尼的表达式,并分析电抗对等效阻尼的影响。在此基础上,基于最大电能输出进行阻抗匹配,并采用相量法分析阻抗匹配对机械谐振条件的影响,推导出谐振弹簧劲度系数表达式。最后,通过直线振荡系统实验平台验证阻抗匹配及弹簧谐振劲度系数理论推导的准确性,为热声发电系统直线发电机的设计提供理论指导。

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