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电梯控制电源要求稳定、可靠和长寿命,而对于安装在易遭受雷击干扰入侵场合的电梯控制电源,又要求具有较高的抗雷击能力。为提高电源抗雷击浪涌性能,提出了在防雷电路中引入串联空心电感的改进措施,在分析空心电感作用的基础上,建立了模型,并搭建了实验电路。实验结果表明,采用空心电感的防雷电路能有效地提高电源防雷性能,减少后级电路受到的危害。
Elevator control power requirements of stable, reliable and long life, but for the installation of lightning prone to lightning intrusion occasions elevator control power, but also requires a higher anti-lightning capability. In order to improve the anti-lightning surge performance of the power supply, an improvement measure of introducing series hollow inductors in the lightning protection circuit is proposed. Based on the analysis of the hollow inductor effect, a model is established and an experimental circuit is set up. The experimental results show that lightning protection circuit with hollow inductor can effectively improve the lightning protection performance of power supply and reduce the damage to the latter circuit.