Analysis of a Novel Four Level Flying Capacitor H – Bridge Converter

In this paper, a novel four-level flying capacitor inverter and its comparison with the conventional flying capacitor topology in terms of THD analysis are proposed. This new topology have some advantages over conventional one as following: The blocking voltages are the same for all switches used in the configuration, there is no need for capacitor midpoint connection and this eliminates low frequency current which circulate in dc-link capacitors, and the number of flying capacitor is reduced as compared with conventional form of it. The operation of the topology, modulation strategy, simulation results, and THD analysis for the output waveforms are presented in this paper.Article History: Received: 17th July 2017; Received: October 14th 2017; Accepted: Januari 18th 2018; Available onlineHow to Cite This Article: Gülpınar, F., Sarı, F., and Uzun, Y. (2017) Analysis of a Novel Four Level Flying Capacitor H – Bridge Converter. International Journal of Renewable Energy Development, 7(1), 71-75.https://doi.org/10.14710/ijred.7.1.71-7

Design and implementation of a novel power conditioner for linear induction launchers

*Gülpınar, Feyzullah ( Aksaray, Yazar )Abstract Author keywords Indexed keywords Topics of prominence Abstract Linear induction launchers have some important advantages, such as contactless operation between barrel and projectile, over the other type of launching technologies. The barrel corresponding to stator can be excited by generators or capacitor banks whose voltage and frequency might be constant or being manipulated by a power conditioner. Multilevel converter topologies for driving rotational electromechanical machines have attracted more attention for the last decades due to some of their unique benefits. Since linear induction launchers are subset of electrical machines, multilevel topologies can be applied to them as well. For this reason, a novel converter structure as a conditioner for power source unit of a linear induction launcher will be designed and implemented. The proposed power conditioner is constructed as cascaded H-bridge multilevel converter topology in which SiC MOSFETS will be preferred. Level-shifted PWM (LS-PWM) technique is chosen to create required pulses of the switching devices. Also, variable-voltage/variable-frequency (VVVF) control method is applied to drive the launcher with proposed conditione

Analysis of a novel four level flying capacitor h - bridge converter

WOS: 000429409200010In this paper, a novel four-level flying capacitor inverter and its comparison with the conventional flying capacitor topology in terms of THD analysis are proposed. This new topology have some advantages over conventional one as following: The blocking voltages are the same for all switches used in the configuration, there is no need for capacitor midpoint connection and this eliminates low frequency current which circulate in dc-link capacitors, and the number of flying capacitor is reduced as compared with conventional form of it. The operation of the topology, modulation strategy, simulation results, and THD analysis for the output waveforms are presented in this paper.Aksaray University [2016-031]This work has been supported by Research Fund of the Aksaray University. Project Number: 2016-031