Please use this identifier to cite or link to this item:
|Title:||PWM methods to handle time delay in digital control of a UPS inverter||Authors:||Deng, H.
Pulse width modulation
Uninterruptible power supply
|Issue Date:||Mar-2005||Citation:||Deng, H.,Oruganti, R.,Srinivasan, D. (2005-03). PWM methods to handle time delay in digital control of a UPS inverter. IEEE Power Electronics Letters 3 (1) : 1-6. ScholarBank@NUS Repository. https://doi.org/10.1109/LPEL.2004.842402||Abstract:||With the popularity of micro-processors, digital controllers are widely used in uninterruptible power supply (UPS) inverters. These digital control systems of UPS inverters require a time interval for sampling and computation, which sometimes affects the performance of inverters. In this paper, the problem of time delay in digital control of a UPS inverter is discussed. Then two novel pulsewidth modulation (PWM) methods, the two-polarity PWM method and the asymmetric PWM method, are proposed to handle the time-delay problem. Both of these PWM methods can achieve a wide range of duty ratio between 0.05-0.95, which is independent of inverter model. Furthermore, they are easy to implement using a digital micro-controller. Experimental results are presented in the paper to verify feasibility of the proposed PWM methods. © 2005 IEEE.||Source Title:||IEEE Power Electronics Letters||URI:||http://scholarbank.nus.edu.sg/handle/10635/57161||ISSN:||15407985||DOI:||10.1109/LPEL.2004.842402|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Sep 28, 2020
checked on Sep 21, 2020
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.