Output voltage control is an important subject in magnetically coupled wireless power transfer (MC-WPT) applications. Conventional control methods for MC-WPT systems use the PI controller. However, this method suffers from three issues: time-consuming tuning work of the PI parameters, increased control complexity due to the needs of the modulator, and poor dynamic performance. To provide an attractive alternative to the PI controller, a novel output voltage regulation method based on finite-control-set model predictive control (FCS-MPC) has been proposed for a MC-WPT system. The proposed method has inherent advantages such as a very intuitive concept, no need for a modulator, and fast dynamic response. Moreover, it can achieve soft switching by constructing pulse-density-modulation-based voltage pulse sequences as the control set. The design and implementation of the proposed controller are discussed in this paper. The proposed control method has been tested on a series-series-compensated MC-WPT system, and experimental results demonstrate the effectiveness of the proposed control method in comparison with PI control methods.

在磁耦合无线功率传输（MC-WPT）应用中，输出电压控制是一个重要的主题。MC-WPT系统的常规控制方法使用PI控制器。但是，该方法存在三个问题：PI参数的调整工作耗时，由于调制器的需要而增加的控制复杂度以及较差的动态性能。为了提供一种有吸引力的PI控制器替代方案，针对MC-WPT系统，提出了一种基于有限控制集模型预测控制（FCS-MPC）的新型输出电压调节方法。所提出的方法具有固有的优点，例如非常直观的概念，不需要调制器以及快速的动态响应。此外，通过构建基于脉冲密度调制的电压脉冲序列作为控制集，可以实现软切换。本文讨论了所提出的控制器的设计和实现。该控制方法已经在串联补偿MC-WPT系统上进行了测试，实验结果证明了该控制方法与PI控制方法相比是有效的。