Please use this identifier to cite or link to this item: https://doi.org/10.1109/PESC.2004.1355622
Title: Digital control of single-phase UPS inverters with modified PWM technique
Authors: Deng, H.
Oruganti, R. 
Srinivasan, D. 
Issue Date: 2004
Citation: Deng, H., Oruganti, R., Srinivasan, D. (2004). Digital control of single-phase UPS inverters with modified PWM technique. PESC Record - IEEE Annual Power Electronics Specialists Conference 2 : 1365-1371. ScholarBank@NUS Repository. https://doi.org/10.1109/PESC.2004.1355622
Abstract: The purpose of a voltage controller for UPS inverters is to produce stable output voltage with low distortion under all loading conditions, especially under nonlinear loads and dynamic loads. This paper presents the design of a novel digital robust feedback controller for single-phase UPS inverters based on pole-placement method. With the polynomial design method adopted, all closed-loop poles of the system are placed at origin with feedback of output voltage for achieving fast dynamic response. Furthermore, the feedback of load current is designed so as to reduce the voltage distortion introduced by load current to a small amount so that it can be ignored. To eliminate the effect of the time delay caused by sampling and calculation, a modified PWM technique is introduced. The proposed control strategy is capable of guaranteeing high quality steady-state and dynamic responses. The design of the proposed digital controller is very simple and requires only a reasonably accurate knowledge of the output L-C filter parameters. Also, only the output voltage and load current are sensed. Simulation and experimental verification have been carried out on a 1-kVA PWM inverter. Results of simulations and experiments show that the proposed controller can achieve very low total harmonic distortion (THD) and fast dynamic response under various loads with low switching frequency.
Source Title: PESC Record - IEEE Annual Power Electronics Specialists Conference
URI: http://scholarbank.nus.edu.sg/handle/10635/69945
ISBN: 0780383990
ISSN: 02759306
DOI: 10.1109/PESC.2004.1355622
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

12
checked on Nov 9, 2018

WEB OF SCIENCETM
Citations

4
checked on Oct 31, 2018

Page view(s)

31
checked on Oct 6, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.