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首页> 外文期刊>Industry Applications, IEEE Transactions on >Battery Modeling and Parameter Extraction for Drive Cycle Loss Evaluation of a Modular Battery System for Vehicles Based on a Cascaded H-Bridge Multilevel Inverter
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Battery Modeling and Parameter Extraction for Drive Cycle Loss Evaluation of a Modular Battery System for Vehicles Based on a Cascaded H-Bridge Multilevel Inverter

机译：基于级联H桥多晶逆变器的车辆模块化电池系统驱动循环损耗评估电池造型和参数提取

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摘要

This article deals with the modeling and the parameterization of the battery packs used in cascaded H-bridge multilevel propulsion inverters. Since the battery packs are intermittently conducting the motor currents, the battery cells are stressed with a dynamic current containing a substantial amount of low-order harmonic components up to a couple of kHz, which is a major difference in comparison to a traditional two-level inverter drive. Different models, such as pure resistive and dynamic RC-networks, are considered to model the energy losses for different operating points (OPs) and driving cycles. Using a small-scale setup, the models’ parameters are extracted using both a low-frequency, pulsed current, and an electrochemical impedance spectroscopy (EIS) sweep. The models are compared against measurements conducted on the small-scale setup at different OPs. Additionally, a drive cycle loss comparison is simulated. The simple resistive model overestimates the losses by about 20% and is, thus, not suitable. The dynamic three-time-constant model, parameterized by a pulsed current, complies with the measurements for all analyzed OPs, especially at low speed, with a maximum deviation of 3.8%. Extracting the parameters using an EIS seems suitable for higher speeds, though the losses for the chosen OPs are underestimated by 1.5%–7.9%.
机译：本文涉及级联H桥多级推进器中使用的电池组的建模和参数化。由于电池组间歇地进行电动机电流，因此电池单元用动态电流强调，该动态电流包含大量的低位谐波分量，直到几个kHz，这与传统的两级相比，这是一个主要的差异变频器驱动器。不同的型号，如纯电阻和动态 rc -NETWORKS，被认为模拟不同的操作点（OPS）和驱动周期的能量损失。使用小规模设置，使用低频，脉冲电流和电化学阻抗光谱（EIS）扫描提取模型的参数。将模型与在不同OPS的小规模设置上进行的测量进行比较。另外，模拟了驱动循环损耗比较。简单的电阻模型将损耗高估约20％，因此不适合。由脉冲电流参数化的动态三次恒定模型符合所有分析的操作的测量，尤其是在低速，最大偏差为3.8％。使用EIS提取参数似乎适用于更高的速度，尽管所选操作的损失低估1.5％-7.9％。

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