单相交流输入的无电解电容抽头电感单级升压逆变器在交流调速系统中的应用

An Adjustable-speed System With Single-phase AC Input Based on Electrolytic Capacitor-less Tapped-inductor Single-stage Boost Inverters

研究将无电解电容的单级升压逆变技术应用于变频调速系统。采用的抽头电感单级升压逆变器(tapped-inductor single-stage boost inverter,TISSBI)包含由1个抽头电感和2个二极管构成的无源网络,通过调节直通占空比和电感抽头的位置,能够实现单级升降压功能。将无电解电容的TISSBI应用于单相输入的变频调速系统,实现抗电网电压跌落、母线脉动抑制和提高输入功率因数的功能。用实验验证了理论分析方法的可行性。

This paper presented an adjustable-speed system with single-phase AC input based on the electrolytic capacitor-less single-stage boost inverter with tapped-inductor. The tapped-inductor single-stage boost inverter （TISSBI） includes an impedance network with one tapped inductor and two diodes, and it can realize buck or boost performance. In order to resist the grid voltage sags, output low frequency ripple decreasing, and input power factor improvement, this paper applied the electrolytic capacitor-less TISSBI to adjustable-speed system with single-phase AC input. Experimental results were carried out to verify the theoretical analysis.