This article presents a single-phase, single-stage onboard plug-in electric vehicle (PEV) charger. The single-phase PEV chargers have an inherent problem of introducing a second-order ripple component on dc side. This problem is further exaggerated during the vehicle-to-grid (V2G) mode of operation where it may be normally controlled to supply both active as well as reactive power. During the V2G reactive power compensation, the second-order harmonics ripple component at dc side will increase, which further reduces the life cycle and performance of battery pack. Therefore, a second-order ripple component compensation technique is proposed by precompensating the reference current itself. The resultant reference current is periodic in nature, and accordingly, a repetitive controller (RC) is used, which is well known for its capability of tracking the periodic signals. The PEV charger is controlled in both grid-to-vehicle (G2V) and V2G modes. In this article, the performance of the controller has been tested in eight different modes on active–reactive (P-Q) power plane and found that ripple minimization technique successfully reduced second-order ripple component on dc side. The PEV charger controller has been simulated in MATLAB/Simulink environment and implemented on the scaled down experimental setup.

中文翻译：

---

单相单级车载 PEV 充电器中的二阶纹波最小化

本文介绍了一种单相、单级车载插入式电动汽车 (PEV) 充电器。单相 PEV 充电器具有在直流侧引入二阶纹波分量的固有问题。在车辆到电网 (V2G) 操作模式期间，这个问题被进一步夸大了，在这种模式下，通常可以控制它提供有功功率和无功功率。在V2G无功补偿过程中，直流侧二次谐波纹波分量会增加，进一步降低电池组的生命周期和性能。因此，提出了一种通过对参考电流本身进行预补偿的二阶纹波分量补偿技术。产生的参考电流本质上是周期性的，因此，使用重复控制器 (RC)，它以跟踪周期信号的能力而闻名。PEV 充电器在电网到车辆 (G2V) 和 V2G 模式下进行控制。在本文中，控制器的性能在有源-无功 (PQ) 电源平面上以八种不同模式进行了测试，发现纹波最小化技术成功地减少了直流侧的二阶纹波分量。PEV 充电器控制器已在 MATLAB/Simulink 环境中进行仿真，并在按比例缩小的实验装置上实现。