Title :
Adjustable speed drive neutral voltage shift and grounding issues in a DC distributed system
Author :
Xing, Kun ; Lee, Fred C. ; Lai, J.S. ; Gurjit, Thandi ; Borojevic, Dusan
Author_Institution :
Bradley Dept. of Electr. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA
Abstract :
This paper presents a system-level analysis of the voltage shift brought about by both the front-end and secondary converters. It is shown that the noise caused by the front-end converter is worse than that from the voltage source inverter itself because it will propagate along the DC bus and penetrate to downstream converters. This paper presents the results of analyses, simulations and experiments on this type of noise, which behaves as common-mode low frequency zero sequence and high-frequency dv/dt in a three-phase rectifier and inverter. Ways to alleviate the problem and achieve high performance DC distribution are discussed
Keywords :
AC motor drives; earthing; interference (signal); invertors; rectifying circuits; variable speed drives; DC distributed system; adjustable speed drive; common-mode low frequency zero sequence; front-end converters; grounding; high-frequency dv/dt; neutral voltage shift; noise propagation; secondary converters; system-level analysis; three-phase inverter; three-phase rectifier; Analytical models; Frequency; Grounding; Inverters; Rectifiers; Semiconductor device noise; Support vector machines; Switching converters; Variable speed drives; Voltage;
Conference_Titel :
Industry Applications Conference, 1997. Thirty-Second IAS Annual Meeting, IAS '97., Conference Record of the 1997 IEEE
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-4067-1
DOI :
10.1109/IAS.1997.643071
