静态无弧有载自动调压配电变压器研究与实现
Transformer（2022）
Abstract
有载调压是动态解决电压质量问题的有效手段.常规机械式有载调压变压器存在调压模块体积大、速度慢、有环流等问题.本文提出一种基于电力电子过渡支路的调压拓扑及调压方法,通过控制电力电子开关的过零切换和切换开关的状态变换,实现调压绕组的平滑切换,从而实现调整高压侧等效匝数.仿真分析和实物样机实验表明,该方案可很好地实现变压器的宽幅无弧自动调压,具有实际应用价值.
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Key words
static arcless OLTC transformer,on-load tap changer,voltage quality problem,conventional mechanical OLTC transformers,regulating amplitude,slow speed,voltage regulation topology,power electronic transition branch,zero-crossing switch,power electronic switch,state transformation,smooth switching,regulating windings,high voltage side,automatic voltage regulation
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