Control architecture of large MV drives for high power, high availability applications

Author

Matuonto, M.

Author_Institution

Siemens LD A, Berlin

fYear

2008

fDate

20-24 July 2008

Firstpage

1

Lastpage

2

Abstract

The paper will describe the structure, philosophy and hierarchy of the control strategy used in several applications of medium voltage drives. The "building block" is a standard Robicon perfect harmony drive, which consists of a multi-level VSI topology composed of several H-bridges "cells" in series for each phase, to produce the desired output voltage. The standard single perfect harmony drive presents already an architecture in line with fig. 3.1 of the PARI 676 guidelines. There are 5 control levels: application control, converter control, Switching control, cell control, hardware control. This structure has proved to be well suited for all applications requiring the operation of a single drive. Given the topology of the perfect harmony and the cell based control structure, even in the basic single drive configuration, some redundancy is built in the power section and cell control, which allows operation in degraded conditions.

Keywords

electric drives; invertors; switching convertors; Robicon perfect harmony drive; application control; building block standard; cell control; control architecture; converter control; hardware control; large MV drives; medium voltage drives; multilevel VSI topology; power section; Automatic control; Availability; Control systems; Distributed control; Drives; Programmable control; Redundancy; Stators; Torque control; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Power and Energy Society General Meeting - Conversion and Delivery of Electrical Energy in the 21st Century, 2008 IEEE

Conference_Location

Pittsburgh, PA

ISSN

1932-5517

Print_ISBN

978-1-4244-1905-0

Electronic_ISBN

1932-5517

Type

conf

DOI

10.1109/PES.2008.4596667

Filename

4596667