Efficiency Evaluation of Fully Integrated On-Board EV Battery Chargers With Nine-Phase Machines
Efficiency Evaluation of Fully Integrated On-Board EV Battery Chargers With Nine-Phase Machines
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DOI：
10.1109/tec.2016.2606657
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发表时间：
2017-03
影响因子：
4.9
通讯作者：
N. Bodo;E. Levi;I. Subotic;J. Espina;L. Empringham;C. Mark Johnson
中科院分区：
文献类型：
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作者：
N. Bodo;E. Levi;I. Subotic;J. Espina;L. Empringham;C. Mark Johnson
最近推出了一款用于未来电动汽车 (EV) 的完全集成车载电池充电器。它在充电/车辆到电网（V2G）模式下重新利用电动汽车的所有推进组件，不需要任何额外的组件或硬件重新配置，并且在零电磁扭矩产生的情况下实现充电/V2G模式。快速（三相）和慢速（单相）充电都是可能的，并在电网侧以单位功率因数运行。该解决方案基于使用三个三相电机和一个九相逆变器/整流器。本文报告了该系统的效率评估结果。使用九相感应电机和九相永磁电机在充电/V2G 模式下的一系列操作条件下进行测试，包括三相和单相电网连接。此外，还研究了转换器交错对损耗和效率的影响。不同子系统的损耗是分开的，从而从效率的角度深入了解不同电动汽车动力传动系组件优化的重要性。尽管没有对任何系统组件进行优化，但仍有望实现 90% 左右的效率。
A fully integrated on-board battery charger for future electric vehicles (EVs) has been recently introduced. It reutilizes all the propulsion components of an EV in charging/vehicle-to-grid (V2G) modes, it does not require any additional components or hardware reconfiguration, and charging/V2G modes are realized with zero electromagnetic torque production. Both fast (three-phase) and slow (single-phase) chargings are possible, with unity power factor operation at the grid side. The solution is based on the use of a triple three-phase machine and a nine-phase inverter/rectifier. This paper reports on the results of efficiency evaluation for the said system. Testing is performed using both a nine-phase induction machine and a nine-phase permanent magnet machine for a range of operating conditions in charging/V2G modes, with both three-phase and single-phase grid connection. Additionally, the impact of converter interleaving on the losses and efficiency is also studied. Losses are separated for different subsystems, thus providing an insight into the importance of optimization of different EV power train components from the efficiency point of view. Promising efficiencies, in the order of 90%, are achieved although none of the system components have been optimized.