An Improved Model for Circulating Bearing Currents in Inverter-Fed AC Machines

被引：16

作者：

Jaritz, Michael ^{[1
]}

Jaeger, Cornelius ^{[1
]}

Bucher, Matthias ^{[1
]}

Smajic, Jasmin ^{[1
]}

Vukovic, Djordje ^{[2
]}

Blume, Sebastian ^{[2
]}

机构：

[1] HSR Univ Appl Sci, IET Inst Energy Technol, CH-8640 Rapperswil, Switzerland

[2] B&R Ind Automat AG, CH-8500 Frauenfeld, Switzerland

来源：

2019 IEEE INTERNATIONAL CONFERENCE ON INDUSTRIAL TECHNOLOGY (ICIT) | 2019年

关键词：

Bearing currents; circulating bearing current; common mode current; common mode voltage; magnetic coupling; transmission ratio;

D O I：

10.1109/ICIT.2019.8755123

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this paper, a general lumped parameter bearing current model is presented. The lumped parameters are derived from the analytical descriptions of the bearing current paths and the numerical field simulations based on the finite element method. The model considers frequency dependence. The resulting model delivers the common mode current and the circulating bearing current is determined by modeling the magnetic coupling between the common mode current path and the circulating bearing current path. The derived circuit can be applied to AC machines and is verified by measurements of a permanent magnet excited synchronous machine, which is supplied by an off-the-shelf motor drive inverter.

引用

页码：225 / 230

页数：6

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