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Elimination of current oscillation in isolated three-port power converters using active damping method

机译:使用有源阻尼方法消除隔离式三端口功率转换器中的电流振荡

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摘要

Double switching frequency components of the input current in the isolated three-port converter (TPC) can be effectively mitigated using an LC circuit at the input side of the converter. Although the LC circuit prevents the high-frequency current flow into the system, there is a resonant peak in the port current control model that can degrade the control performance and even give rise to instability issues. In this article, an active damping method (ADM) is proposed to enhance the damping ratio of the current control system and decrease the resonance amplitude of the LC circuit. The proposed ADM is fully implemented within the converter control system without any additional circuits or components and as such is seen as a cost-effective and efficient method. Simulation and experiment results show the effectiveness of the proposed method on the input current oscillation elimination in an isolated TPC.
机译:隔离三端口转换器(TPC)中输入电流的双开关频率分量可以使用转换器输入侧的LC电路有效地缓解。尽管LC电路阻止了高频电流流入系统,但端口电流控制模型中仍存在一个谐振峰值,该峰值可能会降低控制性能,甚至引起不稳定问题。本文提出了一种主动阻尼方法(ADM),以提高电流控制系统的阻尼比并降低LC电路的谐振幅度。拟议的ADM在转换器控制系统内完全实现,而无需任何其他电路或组件,因此被视为一种经济高效的方法。仿真和实验结果表明,该方法在隔离式TPC中消除输入电流振荡的有效性。

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