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

Volume

3

fYear

2003

fDate

12-16 Oct. 2003

Firstpage

2018

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Conference, 2003. 38th IAS Annual Meeting. Conference Record of the

Print_ISBN

0-7803-7883-0

Type

conf

DOI

10.1109/IAS.2003.1257844

Filename

1257844