Title :
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
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;
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
