Title :
Control and implementation issues with paralleling soft-switched drive systems
Author :
Cuzner, Robert M. ; Nowak, Daniel J. ; Bendre, Ashish ; Oriti, Giovanna ; Julian, Alexander L.
Author_Institution :
DRS Power & Control Technol. Inc., Milwaukee, WI, USA
Abstract :
A mathematical model developed for a generalized drive system, including common mode passive and active elements, is used to explore the issues of paralleling soft switched resonant DC link drive systems. Differences between the modulation pattern for each drive system may cause common voltage disturbances, which lead to significant circulating currents between the drive systems. Control methods for actively compensating for common mode circulating currents or reducing the common mode voltage disturbances are investigated. Practical modifications to the drive system controls are implemented to reduce the circulating currents.
Keywords :
compensation; invertors; motor drives; switching convertors; 150 kW; 300 kW; EMI; actively clamped resonant DC converter; circulating currents; common mode active elements; common mode circulating currents; common mode passive elements; common mode voltage disturbances reduction; common voltage disturbances; control methods; inverter; mathematical model; modulation pattern; soft switched resonant DC link drive systems; soft-switched drive systems paralleling; Control systems; Drives; Electromagnetic interference; Harmonic filters; Impedance; Inverters; Mathematical model; Output feedback; Rectifiers; Voltage control;
Conference_Titel :
Industry Applications Conference, 2003. 38th IAS Annual Meeting. Conference Record of the
Print_ISBN :
0-7803-7883-0
DOI :
10.1109/IAS.2003.1257844
