Discrete-time fuzzy sliding mode control of a UPS inverter feeding nonlinear loads

En Chih Chang, Li Peng Yin, Fu Juay Chang, Tsorng-Juu Liang, Jiann-Fuh Chen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)


This paper presents a discrete-time sliding mode controller based on fuzzy logic for high performance single-phase UPS inverters capable of maintaining low harmonic distortion in response to nonlinear loads. The discrete-time sliding mode control suits for digital realization due to its finite sampling frequency. Also, an algorithm for uncertainty estimation, incorporating with fuzzy tuning technique, is developed. The dynamics of the switching function can be driven to the origin and the stability of this control system is guaranteed. The proposed control scheme has been implemented using a dSPACE DSP. Experimental results on a UPS inverter prototype show that the proposed control scheme can achieve low total harmonics distortion during steady-state operation as well as fast transient response.

Original languageEnglish
Title of host publicationTENCON 2010 - 2010 IEEE Region 10 Conference
Number of pages4
Publication statusPublished - 2010 Dec 1
Event2010 IEEE Region 10 Conference, TENCON 2010 - Fukuoka, Japan
Duration: 2010 Nov 212010 Nov 24

Publication series

NameIEEE Region 10 Annual International Conference, Proceedings/TENCON


Other2010 IEEE Region 10 Conference, TENCON 2010

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Electrical and Electronic Engineering


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