广西大学 电气工程学院,广西 南宁 530004
华南理工大学 电力学院,广东 广州 510641
通信作者:陆益民
尹志红(1996—),男,博士研究生,研究方向为电力电子变换器建模、分析与控制;
张波(1962—),男,博士,教授,博士生导师,研究方向为电力电子系统建模、分析与控制。
收稿:2024-10-21,
纸质出版:2025-12
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陆益民, 尹志红, 张波. 谐振DC-DC变换器的忆阻电路动态模型[J]. 电机与控制学报, 2025,29(12):111-122.
LU Yimin, YIN Zhihong, ZHANG Bo. Memristive circuit dynamic model of resonant DC-DC converters[J]. Electric Machines and Control, 2025, 29(12): 111-122.
陆益民, 尹志红, 张波. 谐振DC-DC变换器的忆阻电路动态模型[J]. 电机与控制学报, 2025,29(12):111-122. DOI: 10.15938/j.emc.2025.12.010.
LU Yimin, YIN Zhihong, ZHANG Bo. Memristive circuit dynamic model of resonant DC-DC converters[J]. Electric Machines and Control, 2025, 29(12): 111-122. DOI: 10.15938/j.emc.2025.12.010.
含桥式整流滤波电路的谐振DC-DC变换器可视为一类忆阻电路。然而,现有模型常忽略电路变量的谐波分量且将整流滤波电路等效为电阻,故难以准确描述混合调制谐振DC-DC变换器的瞬态、稳态响应与忆阻特性,给混合控制策略的设计和动力学分析带来困难。为此,提出一种基于S型函数的谐振DC-DC变换器忆阻电路动态模型。首先用S型函数对开关信号进行光滑化处理,建立可统一描述不同调制方式下开关网络的准确模型;接着,用受控源二端口网络等效表示整流桥,推导出整流滤波电路的忆阻器模型。最后,以串联谐振DC-DC变换器为例,建立其忆阻电路动态模型并进行仿真和实验验证。结果表明:相比其他模型,所提模型能更准确地描述混合调制谐振DC-DC变换器的动静态特性,为应用连续系统理论进行分析和控制奠定基础。
Resonant DC-DC converters with bridge rectifier filter circuits are regarded as a type of memristive circuit. However
existing models often neglect the harmonic components of circuit variables and equivalently treat the rectifier-filter circuit as a resistor. Therefore
it is difficult to accurately describe the transient and steady-state responses and memristive characteristics of the hybrid modulation resonant DC-DC converter
which poses challenges for the design of hybrid control strategies and the analysis of its dynamic behavior. Therefore
a memristive circuit dynamic model was proposed based on sigmoid functions for resonant DC-DC converters. Firstly
sigmoid functions were used to smooth the switching signals and establish an accurate model that can uniformly describe the switching networks under different modulation methods. Then
the rectifier bridge was represented equivalently by a controlled-source two-port network
and the memristor model of the rectifier filter circuit was derived. Finally
taking a series resonant DC-DC converter as an example
a memristive circuit dynamic model was established
and simulation and experimental verification were carried out. The results indicate that
compared to other models
the proposed model can describe the dynamic and static characteristics of the resonant DC-DC converter under hybrid modulation more accurately
laying the foundation for the application of continuous system theory to analyze and control.
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