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Estimation and Compensation of DC-Link Voltage Disturbances in a DCDC Converter for Battery Emulation
International Journal of Control ( IF 2.1 ) Pub Date : 2019-06-13 , DOI: 10.1080/00207179.2019.1626994
Alexander Wasserburger 1 , Oliver König 2 , Stefan Jakubek 3
Affiliation  

ABSTRACT Battery emulation is essential for reliable testing of powertrains of electric and hybrid vehicles under repeatable conditions. For that purpose, a DC voltage controller provides fast reference tracking capabilities. Due to imperfect conversion of AC current to DC current, the DC voltage source of the battery emulator does not provide constant voltage but is subject to periodic fluctuations. This disturbance is propagated through the system to the battery emulator's output. In this paper, an observer-based compensation strategy is deployed. As the structure of the multiplicative perturbation is known, it is integrated into the battery emulator model yielding a state-affine system. An appropriate observer provides asymptotically correct estimates of the disturbance, which are then used to adequately manipulate the control variable without interfering with stability properties of the closed-loop system. Simulation and experimental results show the improvements achieved by the disturbance rejection.

中文翻译:

用于电池仿真的 DCDC 转换器中直流链路电压扰动的估计和补偿

摘要 电池仿真对于在可重复条件下可靠测试电动和混合动力汽车的动力系统至关重要。为此,直流电压控制器提供了快速参考跟踪功能。由于交流电流到直流电流的转换不完善,电池模拟器的直流电压源不能提供恒定电压,而是会受到周期性波动的影响。这种干扰通过系统传播到电池仿真器的输出。在本文中,部署了基于观察者的补偿策略。由于乘法扰动的结构是已知的,因此将其集成到电池仿真器模型中,从而产生状态仿射系统。一个合适的观察者提供了对干扰的渐近正确估计,然后用于在不干扰闭环系统的稳定性特性的情况下充分操纵控制变量。仿真和实验结果表明干扰抑制所实现的改进。
更新日期:2019-06-13
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