Design Analysis of LCTLC Resonant Inverter for Two-Stage 2-Phase Supply System

Abstract

AbstractThis paper deals with the design analysis and synthesis of power resonant inverter with sinusoidal output voltage for sensitive loads. The proposed filter must be capable of removing higher harmonic components from the supplying voltage to reach a harmonic distortion of roughly 5% in the whole range of the load (0–100%). The inverter can be supplied from either single-phase voltage inverter in full-or half-bridge connection, or from simple DC/DC buck converter. Non-symmetrical control causes higher harmonic content, both odd and even. Simulation and experimental results based on designed parameters and subsequently obtained from Matlab and OrCad models confirm good quality of output quantities, voltage and current.Tema je ovog članka analiza dizajna i sinteza učinskog rezonantnog invertera sa sinisuidalnim izlaznim naponom za osjetljve terete. Predloženi filtar mora moći filtrirati više harmonike ulaznog napona kako bi distorzija harmonika bila oko 5% u čitavom radnom podrucju (0–100%). Inverter se može napajati ili iz jednofaznog naponskog invertera u mosnom ili polumosnom spoju ili iz jednostavog DC/DC buck pretvarača. Nesimetrično upravljanje uzrokuje pojavu viših harmonika u signalu, kako parnih tako i neparnih. Simulacijski i eksperimentalni rezultati temeljeni na sintetiziranim parametrima dobivenim od modela napravljenih u programskim paketima Matlab i OrCad potvrđuju dobru kvalitetu izlaznih veličina napona i struje.Key words: DC/AC convertersLCLC resonant filterresonant-mode power suppliesBode diagramFourier analysistransfer functionKljučne riječi: DC/AC pretvaračiLCLC rezonantni filtrirezonantno napajanjeBodeov dijagramFourierova analizaprijenosna funkcija Additional informationNotes on contributorsBranislav DobruckyBranislav Dobrucky (SM'10) born in Slovakia, He received the Ph.D. degree in electric traction and electric drives from the University of Transport, Zilina in 1984. He was with Czechoslovak State Railways and Electrical Research and Testing Institute. He is now full professor at the Department of Mechatronics and Electronics at the University of Zilina. His research interest includes power quality, FACT systems, real-time control, and power electronic systems. He is a senior member of Industrial Electronics Society.Mariana BenovaMariana Beňová had graduated in Power Elec- trotechnics at the University of Zilina in 2007. She works as associate professor at Department of Electromagnetic and Biomedical Engineering of the University of Zilina. Her professional areas are non-sinusoidal currents and voltages and biomedical engineering.Mahmud AbdalmulaMahmud A. Rzig Abdalmula is associated professor at Faculty of Engineering, University of El Zawia, Libya. His professional topics are power electronics and power electrical systems.Slavomir KaščákSlavomir Kaščák had graduated in the field of power electronics at the Faculty of Electrical Enginee-ring of the University of Žilina in 2009. He is currently an internal doctoral candidate at the Depart-ment of Mechatronics and Electronics. Specialization: Automation.