The research on protection of over-voltage about NPC three-level medium voltage motor drives

Author

Fang, Jing ; Mao, Chengxiong ; Lu, Jiming ; Wang, Dang ; Zhang, Qinghua

Author_Institution

Dept. of Electr. Eng., Huazhong Univ. of Sci. & Technol., Wuhan

fYear

2008

fDate

17-20 Oct. 2008

Firstpage

1595

Lastpage

1599

Abstract

The causes of over-voltage about NPC three-level medium voltage motor drives are analyzed. To avoiding any kind of over-voltage about motor drives, a method of using ZnO-arrester to be the device of over-voltage protection on NPC three-level medium voltage motor drives is proposed in this paper. The detailed calculation of how to choose ZnO-arrester is given. Comparing the voltage waves before adding the ZnO-arrester and after adding the ZnO-arrester in proper locations by simulating on Matlab Simulink, the result shows that the ZnO-arrester can protect motor drives to over-voltage very well. It is proved that the method of using ZnO-arrester to be the device of over-voltage protection on NPC three-level medium voltage motor drives is valid and the choosing calculation of ZnO-arrester is correct.

Keywords

arresters; motor drives; overvoltage protection; zinc compounds; Matlab Simulink; NPC three-level medium voltage motor drives; ZnO; arrester; neutral point clamped; over-voltage protection; Arresters; Capacitors; Filters; Medium voltage; Motor drives; Power electronics; Power system protection; Pulse width modulation inverters; Switches; Zinc oxide;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems, 2008. ICEMS 2008. International Conference on

Conference_Location

Wuhan

Print_ISBN

978-1-4244-3826-6

Electronic_ISBN

978-7-5062-9221-4

Type

conf

Filename

4770984