文章基本信息

标题：Research on the supercapacitor support schemes for LVRT of variable-frequency drive in the thermal power plant
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作者：Qiguo Han ; Kai Zhu ; Wenming Shi 等
期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2018
卷号：121
期号：4
页码：042021
DOI：10.1088/1755-1315/121/4/042021
语种：English
出版社：IOP Publishing
摘要：In order to solve the problem of low voltage ride through(LVRT) of the major auxiliary equipment's variable-frequency drive (VFD) in thermal power plant, the scheme of supercapacitor paralleled in the DC link of VFD is put forward, furthermore, two solutions of direct parallel support and voltage boost parallel support of supercapacitor are proposed. The capacitor values for the relevant motor loads are calculated according to the law of energy conservation, and they are verified by Matlab simulation. At last, a set of test prototype is set up, and the test results prove the feasibility of the proposed schemes.