10 research outputs found

    A hybrid fuzzy sliding-mode control for a three-phase shunt active power filter

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    This document is the Accepted Manuscript version of the following article: Mohamed Abdeldjabbar Kouadria, Tayeb Allaoui, and Mouloud Denai, ‘A hybrid fuzzy sliding-mode control for a three-phase shunt active power filter’, Energy Systems, Vol. 8 (2): 297-308, March 2016. The final publication is available at Springer via http://dx.doi.org/10.1007/s12667-016-0198-4.This paper describes the hybrid fuzzy sliding-mode control (HFSMC) for a three phase shunt active shunt filter for the power quality improvement. The Power Quality (PQ) problems in power distribution systems are not new but only recently the effects of these problems have gained public awareness. These non-linear loads are constructed by nonlinear devices in which the current is not proportional to the applied voltage. For the harmonic elimination different methods are used, but in this paper a novel fuzzy logic controller for a three-phase shunt active power filter for the power quality improvement such as reactive power and harmonic current compensation generated due to nonlinear loads. The hybrid fuzzy sliding-mode control (HFSMC) approach is proposed such that it can be applied with advantages to both fuzzy and sliding-mode controller. Simulation results are presented to demonstrate the effectiveness of the control strategy. The results are found to be quite satisfactory to mitigate harmonic distortions, reactive power compensation and power quality improvement.Peer reviewedFinal Accepted Versio

    Mission Profile Analysis of a SiC Hybrid Module for Automotive Traction Inverters and its Experimental Power-loss Validation with Electrical and Calorimetric Methods

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    This paper investigates the efficiency benefits of replacing the Silicon diodes of a commercial IGBT module for the main inverter application of an electric vehicle with Silicon Carbide diodes, leaving the package, operating conditions and the system unchanged. This ensures that the comparison is directly between the chip technologies without any scope for discrepancies arising out of differences in the packaging, gatedriver circuit etc. A behavioral power loss calculation model is used to investigate the performance of the two modules for various drive cycles (Artemis, WLTP, NEDC). The behavioral power loss model is experimentally validated using two independent measurement methods, namely, power analyser based electrical input output method, and a calorimetric method which was developed especially for the low lossy light load condition. Furthermore, it is shown that the electrical method has close to 30% inaccuracy making it unsuitable for the main inverter applications, especially for comparing two different chip technologies, e.g., Silicon versus Silicon Carbide. The developed calorimetric method in contrast offers lower than 3% uncertainty

    A calorimetric method for measuring power losses in power semiconductor modules

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    In this paper, a calorimetric method is presented to measure the total inverter power losses, for the purpose of validation of automotive main inverter mission profile analysis. Automotive main inverters operate in the partial-load condition (less than a quarter of the nominal current) for more than 90% of their operating time. The main goal of this calorimetric method is to achieve less than 5% uncertainty, especially in the low-lossy partial load condition. Such low uncertainty is particularly necessary for comparing two different semiconductor technologies, e.g., Silicon IGBT and Silicon Carbide MOSFET, where the difference in total losses can be expected in the range of 10-20%. The proposed calorimetric method is experimentally compared to conventional power loss measurement techniques such as the electrical input-output based method or traditional calorimetric methods, and also simulations. The paper demonstrates that the proposed method is nearly as easy to perform as the electrical method. A detailed analysis of the sources of uncertainty is also performed
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