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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,...
In this paper, the design of parallel-connected dc-ac converters using sliding mode controller with GM(1, 1) model is presented. AC output voltage regulation and balanced current-sharing among the parallel modules is achieved by means of sliding mode control (SMC). But, the chattering around the sliding surface exists when the system uncertainties values are overestimated. This may excite the unmodelled...
In this paper, a terminal sliding mode control (TSMC) with grey prediction for UPS inverters is proposed to maintain very low total harmonic distortion (THD) output voltage under rectifier-type loading conditions and fast dynamic response under step change loading conditions. The proposed controller combines the merits of terminal sliding mode control and grey prediction. TSMC can drive the system...
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