Fixed frequency sliding mode-based robust inversion with a full-bridge current DC-link buck-boost |
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| Institution: | 1. Department of Applied Mathematics IV, Universitat Politècnica de Catalunya, 08860 Castelldefels, Spain;2. Institute of Industrial and Control Engineering, Universitat Politècnica de Catalunya, 08028 Barcelona, Spain;1. Department of Chemistry, BIT Mesra, Ranchi 835215, India;2. Department of Physics, BIT Mesra, Ranchi 835215, India;3. UGC-DAE Consortium for Scientific Research Indore, India;4. IUAC, Aruna Asaf Ali road, New Delhi, India;1. Department of Chemical Engineering, Faculty of Engineering, Arak University, P.O. Box: 38156-8-8349, Arak, Iran;2. Material and Nuclear Fuel Research School, Nuclear Science and Technology Research Institute, P.O. Box: 11365-8486, Tehran, Iran;3. School of Chemical Engineering, College of Engineering, University of Tehran, P.O. Box: 11155-4563, Tehran, Iran;1. Infectious Disease Unit, Sheba Medical Centre, Tel Hashomer;2. Tel Aviv University, Tel Aviv;3. Microbiology Laboratory, Sheba Medical Centre, Tel Hashomer;4. Ariel University Centre, Ariel, Israel;1. Department of Ecology, Swedish University of Agricultural Sciences, Box 7044, SE-750 07, Uppsala, Sweden;2. Department of Forest Mycology and Plant Pathology, Swedish University of Agricultural Sciences, Box 7026, SE-750 07, Uppsala, Sweden |
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| Abstract: | The substitution of the original switches by a full bridge in a Non-Inverting Buck-Boost converter results in an inverter capable of carrying out step-down and step-up tasks as well under sliding mode control. The control law is implemented by means of the Zero Average Dynamics algorithm, which provides a fixed frequency operation and guarantees null error in each switching period, thus achieving a highly accurate tracking of periodic reference profiles. Furthermore, semi-infinite programming techniques are used to reduce power losses and, at the same time, prevent undesirable effects of control action saturation. The performance of the inverter is ensured to be robust in the face of bounded nonlinear and resistive loads. Realistic simulation results obtained with PSIMR software validate the proposed schemes. |
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