A novel dynamic control strategy on resisting impulsive load for uninterruptible power supply system

Author

Guofeng He ; Dehong Xu ; Wei Yu ; Min Chen

Author_Institution

Inst. of Power Electron., Zhejiang Univ. Hangzhou, Hangzhou, China

fYear

2013

fDate

17-21 March 2013

Firstpage

1457

Lastpage

1464

Abstract

Uninterruptible Power Supply (UPS) is widely used in industry and electronics field in order to improve power quality. However, the distortion and interruption of output voltage will occur when UPS is applied to instantaneous impulsive load. This paper proposes a novel dynamic control strategy to resist impulsive load. When the impulsive load is imposed on UPS instantaneously, the impulsive current can be quickly sensed by the digital controller and the supplying power for the load is switched from inverter to bypass immediately. Therefore, the output voltage of UPS can be maintained uninterruptible. The proposed control strategy is verified by a 30 KVA UPS prototype.

Keywords

digital control; invertors; load regulation; power supply quality; uninterruptible power supplies; UPS; digital controller; dynamic control strategy; electronics field; impulsive current; instantaneous impulsive load; inverter; output voltage distortion; output voltage interruption; power quality improvement; uninterruptible power supply system;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition (APEC), 2013 Twenty-Eighth Annual IEEE

Conference_Location

Long Beach, CA

ISSN

1048-2334

Print_ISBN

978-1-4673-4354-1

Electronic_ISBN

1048-2334

Type

conf

DOI

10.1109/APEC.2013.6520490

Filename

6520490