Integrated charging for electric vehicles (EVs) is considered as a good transitional scheme to expand the mileage range under the battery capacity limit. It can save the costs and reduce the volume by replacing the on-board charger, and can increase the charging power by reusing the high power propulsion system. Then, the charging and propulsion system will therefore be light and compact. As the charging topology is based on the propulsion system, the design degrees of freedom are not very high, further resulting in limited application. And the laws of topological construction are lacking. Therefore, most of the integrated charging schemes are designed for a specific occasion and are difficult to adopt for other applications. In this article, a general derivation law with a unified design criterion is proposed to improve the generality of integrated charging, by considering the charging torque and equivalent filter inductance of the multiplexed converter and motor. The criterion is illustrated and analyzed in a specific scheme that is applied in the Toyota plug-in hybrid EV. The simulation results in a software-in-the-loop environment and experimental results in a down-scaled prototype are demonstrated to confirm the validity of the unified criterion and the effectiveness of the control schemes. It is suitable for the design of integrated charging solutions with multiphase power and multiphase motors.

中文翻译：

---

紧凑型动力总成车载充电器无扭矩实现的一般推导定律

电动汽车（EV）的集成充电被认为是在电池容量限制下扩大里程范围的良好过渡方案。更换车载充电器可节约成本、缩小体积，重复利用大功率推进系统可提高充电功率。因此，充电和推进系统将变得轻巧紧凑。由于充电拓扑基于推进系统，设计自由度不高，进一步限制了应用。并且缺乏拓扑构造的规律。因此，大多数集成充电方案是针对特定场合而设计的，很难被其他应用采用。在本文中，通过考虑多路转换器和电机的充电转矩和等效滤波电感，提出了具有统一设计准则的通用推导律，以提高集成充电的通用性。该标准在应用于丰田插电式混合动力电动汽车的特定方案中进行了说明和分析。软件在环环境中的仿真结果和缩小原型中的实验结果证明了统一准则的有效性和控制方案的有效性。它适用于多相电源和多相电机的集成充电解决方案的设计。该标准在应用于丰田插电式混合动力电动汽车的特定方案中进行了说明和分析。软件在环环境中的仿真结果和缩小原型中的实验结果证明了统一准则的有效性和控制方案的有效性。它适用于多相电源和多相电机的集成充电解决方案的设计。该标准在应用于丰田插电式混合动力电动汽车的特定方案中进行了说明和分析。软件在环环境中的仿真结果和缩小原型中的实验结果证明了统一准则的有效性和控制方案的有效性。它适用于多相电源和多相电机的集成充电解决方案的设计。