Title :
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
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;
Conference_Titel :
Applied Power Electronics Conference and Exposition (APEC), 2013 Twenty-Eighth Annual IEEE
Conference_Location :
Long Beach, CA
Print_ISBN :
978-1-4673-4354-1
Electronic_ISBN :
1048-2334
DOI :
10.1109/APEC.2013.6520490
