Decentralized control of a different rated parallel UPS systems

Author

Strzelecki, Ryszard ; Wojciechowski, Daniel

Author_Institution

Gdynia Maritime Univ., Gdynia

fYear

2007

fDate

9-11 Oct. 2007

Firstpage

1

Lastpage

5

Abstract

The paper presents the single phase uninterruptible power supply (UPS) system with galvanic separated DC-AC-DC-AC converters operating in parallel. The CAN physical layer based system of communication between converters has been developed and applied, which allow to utilize a decentralized master-slave control providing high availability factor of the whole UPS system. The control system of particular converters has been developed to ensure a high quality of the output voltage for both linear and nonlinear load. The selected simulations and experimental results obtained for 5 kVA prototype modules are presented.

Keywords

AC-DC power convertors; DC-AC power convertors; controller area networks; decentralised control; invertors; uninterruptible power supplies; CAN physical layer; apparent power 5 kVA; decentralized master-slave control; galvanic separated DC-AC-DC-AC converters; parallel UPS systems; single phase uninterruptible power supply; voltage source inverters; Availability; Communication system control; Control systems; Distributed control; Galvanizing; Master-slave; Nonlinear control systems; Physical layer; Uninterruptible power systems; Voltage control; decentralized control; parallel operation of the voltage source inverters; uninterruptible power supply;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Power Quality and Utilisation, 2007. EPQU 2007. 9th International Conference on

Conference_Location

Barcelona

Print_ISBN

978-84-690-9441-9

Electronic_ISBN

978-84-690-9441-9

Type

conf

DOI

10.1109/EPQU.2007.4424115

Filename

4424115