High-Power Li-Ion Battery Charger for Electromobil powered by Hydrogen Fuell-Cells

Hlavným ciežom tejto práce je návrhnúť nabíjačku vysoko výkonových lítium-iontových článkov. Následne ju zrealizovať a oživiť. Nabíjačka je riešená ako spínaný zdroj konkrétne jednočinný priepustný menič DC/DC s transformátorom s doplnenými regulátormi a elektronickými ochranami. Menič je riadený pomocou integrovaného obvodu UC3845. Táto inteligentná nabíjačka je schopná pri zachovaní malých rozmerov, dodať do Li-Ion článkov pomerne vysoký prúd ( 30A). Použitie DC/DC meniča ako základu nabíjačky má značné výhody, jedná sa najmä o jednoduchú reguláciu výstupného prúdu, malé rozmery, nízku hmotnosť a nízke náklady na výrobu.Main target of this thesis is deisgn High-Power Li-Ion Battery Charger. The next step is realize and energize it. Charger is designed as switching power supply concretely with regulators and electronic protects.Convertrer is directed with integrated circuit UC3845. This intelligent charger enables to get a very high output current (30A) and it has small dimensions. Usage of DC/DC convertrer as a base of a charger has many advantages like easy output current control, small dimensions, low weight and low production costs.

Implementation of charger current sharing method in railway application using CAN bus

Slovak Research and Development Agency under the contract No. APVV-16-0574, and project HEES4T by Ministry of Education, Science, Research and Sport of the Slovak Republic, perational Program Integrated Infrastructure 2014 – 2020 of the project: Innovative Solutions for Propulsion, Power and Safety Components of Transport Vehicles, code ITMS 313011V334This paper presents the application of parallel cooperation of chargers in auxiliary converters of rolling stock. A control strategy based on CAN serial bus communication has been proposed to achieve even load power sharing by the individual chargers of the parallel system without affecting the accuracy of the output voltage regulation. The paper describes the principle of the proposed control strategy and presents the regulation structure block diagram. The properties of the created control software for parallel cooperation of chargers were experimentally verified on a parallel system of two converters. The measured currents in static and dynamic modes are presented

Application of inverter parallel operation strategy in railway auxiliary converters

This paper describes the implementation of a control strategy for the parallel cooperation of inverters to railway auxiliary converters. The three-phase outputs of the parallel system of auxiliary converters are connected to a common bus. To ensure proper operation and load current sharing, droop-based algorithms are used to control the inverters. The proposed inverter control technique and strategy of inverter outputs and loads connection to a common bus was verified on a four auxiliary converters parallel system. The achieved current sharing in static and dynamic states of a parallel system is presented

Compensation of input impedance by digital control for high voltage convertor

This work was supported by Slovak Research and Development Agency under the contract No. APVV-16- 0574, and project HEES4T by Ministry of Education, Science, Research and Sport of the Slovak Republic. This publication was realized with support of Operational Program Integrated Infrastructure 2014 – 2020 of the project: Innovative Solutions for Propulsion, Power and Safety Components of Transport Vehicles, code ITMS 313011V334, co-financed by the European Regional Development Fund.n this paper, there is presented the digital control of input impedance for high voltage converter. Paper include measurement and evaluation of input impedance performed on auxiliary converter to UIC code 550-2 OR 1st edition and UIC550-3 O, 1st edition standards. The proposed control scheme is created for maximization input impedance for every frequency of injected input voltage

Application of inverter parallel operation strategy in railway auxiliary converters

This paper describes the implementation of a control strategy for the parallel cooperation of inverters to railway auxiliary converters. The three-phase outputs of the parallel system of auxiliary converters are connected to a common bus. To ensure proper operation and load current sharing, droop-based algorithms are used to control the inverters. The proposed inverter control technique and strategy of inverter outputs and loads connection to a common bus was verified on a four auxiliary converters parallel system. The achieved current sharing in static and dynamic states of a parallel system is presented

Compensation of input impedance by digital control for high voltage convertor

This work was supported by Slovak Research and Development Agency under the contract No. APVV-16- 0574, and project HEES4T by Ministry of Education, Science, Research and Sport of the Slovak Republic. This publication was realized with support of Operational Program Integrated Infrastructure 2014 – 2020 of the project: Innovative Solutions for Propulsion, Power and Safety Components of Transport Vehicles, code ITMS 313011V334, co-financed by the European Regional Development Fund.n this paper, there is presented the digital control of input impedance for high voltage converter. Paper include measurement and evaluation of input impedance performed on auxiliary converter to UIC code 550-2 OR 1st edition and UIC550-3 O, 1st edition standards. The proposed control scheme is created for maximization input impedance for every frequency of injected input voltage

Implementation of charger current sharing method in railway application using CAN bus

Slovak Research and Development Agency under the contract No. APVV-16-0574, and project HEES4T by Ministry of Education, Science, Research and Sport of the Slovak Republic, perational Program Integrated Infrastructure 2014 – 2020 of the project: Innovative Solutions for Propulsion, Power and Safety Components of Transport Vehicles, code ITMS 313011V334This paper presents the application of parallel cooperation of chargers in auxiliary converters of rolling stock. A control strategy based on CAN serial bus communication has been proposed to achieve even load power sharing by the individual chargers of the parallel system without affecting the accuracy of the output voltage regulation. The paper describes the principle of the proposed control strategy and presents the regulation structure block diagram. The properties of the created control software for parallel cooperation of chargers were experimentally verified on a parallel system of two converters. The measured currents in static and dynamic modes are presented