Stability analysis of a flatness-based controller driving a battery emulator with constant power load

被引：3

作者：

Zauner, Michael ^{[1
]}

Mandl, Philipp ^{[1
]}

Koenig, Oliver ^{[2
]}

Hametner, Christoph ^{[1
]}

Jakubek, Stefan ^{[3
]}

机构：

[1] TU Wien, Christian Doppler Lab Innovat Control & Monitorin, A-1060 Vienna, Austria

[2] AVL List GmbH, A-8020 Graz, Austria

[3] TU Wien, Inst Mech & Mechatron, A-1060 Vienna, Austria

来源：

AT-AUTOMATISIERUNGSTECHNIK | 2021年 / 69卷 / 02期

关键词：

battery emulation; constant power load (CPL); DC-DC converter; flatness-based control; region of attraction (ROA); MODEL-PREDICTIVE CONTROL; CONVERTER; SYSTEM;

D O I：

10.1515/auto-2020-0107

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

This contribution deals with the control of a battery emulator used in automotive testbeds for electric drivetrains. The battery emulator, which is realized as a DC-DC converter, is connected to a unit-under-test (UUT), e.g., an electric motor inverter. To accurately emulate the dynamic impedance of a battery, a highly dynamic output is required. Additionally, battery emulators should be applicable for a large variety of UUTs, hence robust performance in a large operating range is also required. This is especially challenging when the UUT behaves like a constant power load, as this can cause stability issues. To meet the requirements, a flatness-based control concept is presented that establishes feedback equivalence between a nonlinear and a linearized system representation. By examining the stability of the concept, an estimation of the region of attraction is found.

引用

页码：142 / 154

页数：13

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