A new switching scheme for resonant inverters using a resonant-frequency tracking algorithm

K. Cho, W. Oh, J. Yeon, Heejun Kim
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引用次数: 2

Abstract

This paper presents a new switching scheme for resonant inverters. The proposed method bases on the tracking algorithm of the resonant frequency. Therefore, the proposed method can keep unity output displacement factor at the load-impedance varying conditions. In order to control the output power, the proposed scheme uses pulse width modulation (PWM) method. Thus, since the proposed PWM scheme needs load-circulating operations, it can be adopted in the full-bridge inverter, but not in the conventional half-bridge inverters. In response to that, this paper also proposes a new half-bridge resonant inverter having load-circulating operation modes. In this paper, detailed switching schemes and control circuits of the proposed PWM method are described. Experimental results of the prototype experimental setup to verify the validity of the proposed method are presented and discussed.
一种基于谐振频率跟踪算法的谐振逆变器开关新方案
提出了一种新的谐振逆变器开关方案。该方法基于谐振频率的跟踪算法。因此,该方法可以在负载-阻抗变化条件下保持输出位移因子的一致性。为了控制输出功率,该方案采用脉宽调制(PWM)方法。因此,由于所提出的PWM方案需要负载循环操作,因此可以在全桥逆变器中采用,而不能在传统的半桥逆变器中采用。针对这一问题,本文还提出了一种具有负载循环工作模式的半桥谐振逆变器。本文详细介绍了该方法的开关方案和控制电路。给出并讨论了原型实验装置的实验结果,验证了所提方法的有效性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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