为了得到更适合于船舶电力系统特殊工作环境的DC-DC变换器，进行DC-DC变换器的工作状态及平均模型的分析，提出一种单周能量控制方法用于DC-DC变换器的控制。以船舶常用的Buck-boost变换器为例，首先介绍基于所提出的单周能量控制方法的Buck-boost变换器的工作原理，而后推导其非线性平均模型，采用雅可比矩阵分析其非线性特性，分析结果显示在参考电压的变化下其不会发生分岔或其他慢尺度振荡现象，验证其宽的参数稳定域。最后进行仿真试验，仿真试验结果表明了理论推导模型的正确性，再次证实了所提出的单周能量控制方法具有更优异的动态稳定性，可以在更宽的参数范围域中保持稳定的运行。
In order to obtain a more suitable DC-DC converter for the special working environment of ship power systems, the operating status and average model of the DC-DC converter were analyzed, and a one-cycle energy control method was proposed for the control of the DC-DC converter. Taking the commonly used Buck-boost converter in ships as an example, the working principle of the Buck-boost converter based on the proposed one-cycle energy control method is first introduced. Then, its nonlinear average model is derived, and the nonlinear characteristics are analyzed using the Jacobian matrix. The analysis results show that under the change of reference voltage, it does not exhibit bifurcation or other slow-scale oscillation phenomena, verifying its wide parameter stability domain. Finally, simulation experiments are conducted.The results of the simulation experiments demonstrate the correctness of the theoretical derivation model, further confirming that the proposed one-cycle energy control method has superior dynamic stability and can maintain stable operation over a wider range of parameters.
2025,47(21): 121-126 收稿日期：2025-1-13
DOI：10.3404/j.issn.1672-7649.2025.21.020
分类号：U671.99
基金项目：国家自然科学基金资助项目（62001169）；广州市2025年度基础与应用基础研究专题（青年博士“启航”项目）（SL2024A04J01736）
作者简介：王磊(1987-),女,博士,副研究员,研究方向为电力电子能量变换、船舶电力系统。
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