To address the problems of traditional frequency tracking, such as falling into a local optimum, oscillation near the optimal point, and contradiction between tracking speed and tracking accuracy, an improved perturb–observe method based on component drift parametric scanning is proposed. An inductive contactless power transmission system with LCC/S third-order compensation topology is employed as the research object. First, the relationships between the output voltage and frequency under component drift parametric scanning are given by theoretical deduction and calculation. Then, a reasonable working frequency band is intercepted, and the improved perturb–observe method (including start, end, step, and anti-death cycle judgement) is used to track the optimal working state adaptively. Finally, the correctness of the proposed theory and method was verified by simulations and physical experiments.

中文翻译：

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感应非接触式电力传输系统的最佳工作状态跟踪方法及实验

针对传统频率跟踪存在局部最优，最优点附近振荡，跟踪速度与跟踪精度矛盾等问题，提出了一种基于分量漂移参数扫描的改进的扰动观测方法。以LCC / S三阶补偿拓扑结构的感应非接触电力传输系统为研究对象。首先，通过理论推导和计算给出了分量漂移参数扫描下输出电压与频率之间的关系。然后，截取一个合理的工作频带，并使用改进的扰动观察法（包括开始，结束，步进和抗死亡周期判断）来自适应地跟踪最佳工作状态。最后，