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集群LED路灯谐波与超高次谐波的发射特性研究

Electric Drive(2021)

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Abstract
随着节能降耗的环保政策的快速落实,发光二极管(LED)路灯已经成为低压配电网中一类重要的非线性负荷.LED路灯的驱动电路常采用升压型功率因数校正(Boost-PFC)技术,功率因数高,但是高频率的开关管的通断会产生40次以上的超高次谐波,功率因数校正(PFC)技术调制死区的存在也会导致网侧电流出现低次谐波.从理论上分析了基于Boost-PFC型的集群LED路灯的网侧谐波和超高次谐波特性,并通过仿真和实际测试的结果证明了理论分析的准确性.
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