Effect of Load on Impedance Characteristics of High Frequency Circulating Bearing Current Path in Stator Laminations for an Inverter Fed AC Machine
- Resource Type
- Conference
- Authors
- Zhu, Wenjun; Gaetano, D. De; Sun, Xiangyu; Li, Huanyu; Chen, Xiao; Griffo, A.; Jewell, G. W.; Zhu, Z. Q.; Liu, Chaohui; Yang, Lianghui; Yuan, Yiqing; Yang, Han; Huang, Yiming
- Source
- 2023 26th International Conference on Electrical Machines and Systems (ICEMS) Electrical Machines and Systems (ICEMS), 2023 26th International Conference on. :952-957 Nov, 2023
- Subject
- Aerospace
Components, Circuits, Devices and Systems
Power, Energy and Industry Applications
Robotics and Control Systems
Transportation
Stator cores
Solid modeling
Three-dimensional displays
Lamination
Inverters
Finite element analysis
Permeability
high frequency
circulating bearing current
zigzag impedance
common mode current.
- Language
- ISSN
- 2642-5513
High frequency switching in an inverter fed AC electrical machine can cause high frequency circulating bearing currents which flow through a zigzag path in the stator laminations due to skin effects. This paper presents both analytical calculation and finite element analysis of the zigzag impedance. The finite element methods with frozen permeability technique can account for the load effect which is usually neglected in literature. It is shown that the zigzag impedance is lower at full load than that at light load and varies with the rotor position angle. The impedance results can be used for further prediction of circulating bearing currents.