In this paper a developed symmetric and asymmetric cascaded multilevel inverter is proposed. In asymmetric mode, the values of DC voltage sources are defined in a way that the number of output levels gets more than the condition when the symmetrical DC sources are used. In this regards, to calculate the required magnitudes of DC links several solutions are proposed. It’s obvious that the propos...

Electrified vehicles on the market today all use the classical two-level inverter as the propulsion inverter. This thesis analyse the potential of using a cascaded H-bridge multilevel inverter as the propulsion inverter. With a multilevel inverter, the battery is divided into several parts and the inverter can now create voltages in smaller voltage levels than the two-level inverter. This, amon...

This paper introduces a cascaded converter structure using hybrid two-level cells to form single-phase seven-level inverter. Compared various conventional and existing multilevel (MLI) topologies, this topology requires lower number of devices. It uses several DC sources integrated in two-stage provide the required voltage. In topology, DC-link condensers are not necessary. The modes operation ...

There is strong trend in the photovoltaic (PV) inverter technology to use transformer less topologies in order to acquire higher efficiencies. The general function of multilevel inverter is to synthesis desired voltage from solar source. This inverter has advantageous of industrial applications. The use of converters will increase losses and cost in conventional methods. The proposed seven leve...

This paper presents asymmetrical cascaded multilevel inverter (ACMLI) approach for high voltage and high power output applications. It is based on the cascade connection of the H-bridge inverter cells. Now ever by the supplies which are in GP with different ratios like 2,3,etc. The proposed configuration is shown for 27 level inverters with symmetrical step control, optimization angle control a...

This study includes a multilevel cascaded inverter along with a control strategy. This proposed control scheme directs the inverter to support the grid under three phase balanced voltage sags and during one or two phase faults. Control of voltage between grid and Distributed Generation (DG) system is a challenging subject. Integrating DG with the grid is the fundamental element of this study wh...

This paper deals with the implementation of cascade multilevel inverter-based STATCOM, which employs H-bridge inverter. The STATCOM system is modeled using the d-q transform, which calculates the instantaneous reactive power. In this paper, a power line conditioner using a cascade multilevel inverter is presented for voltage regulation, harmonic filtering and reactive power compensation (var). ...

This paper describes a multilevel Z-source inverter for solar photovoltaic applications. The conventional power conversion topology performs either buck or boost the input voltage for non linear load depending upon duty ratio and modulation index in a multiple stage conversion with the help of impedance source passive network (L and C), which is usually known as Z-Source, which couples the n le...

Received Jan 8, 2018 Revised Mar 23, 2018 Accepted Apr 11, 2018 Distributed energy source based electricity generation is an essential factor for the economic growth and development of a country. The photovoltaic, fuel cell and battery based power generation offer a high voltage gain. The DC-DC CUK converter based on both buck and boost mode of operation is proposed for high gain dc link voltag...

Cascaded H-bridge multilevel inverters have been developed for applications including user interface of renewable energy, voltage regulation, VAR compensation, and harmonic filtering in power systems. A modified cascaded inverter (MLI) is implemented solar applications. Multilevel based on topology will help the reduction number switches. This concept helps to reduce complexity switching compar...