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Further growth in renewable energy integration would be dependent on reliability and cost-effectiveness. These two factors can be achieved through power converter topologies that enable transformer-less connection of renewable energy based technology to the grid. This paper presents a three phase five level dual tapped inductor quasi impedance source (qZS)-nested neutral point clamped (NNPC) topology...
In this paper, magnetically-coupled impedance source (MCIS) three-phase four-switch inverters are introduced for renewable energy applications. This inverter utilizes two single-phase MCIS inverters to obtain a three-phase output, where less component-count is achieved in order to reduce the inverter volume. On the other hand, as a result of the reduced number of switches, the proposed inverter suffers...
New members of XY converter family topologies are proposed in this treatise for a high-voltage/low-current renewable application. Based on the X Converter, the whole existing X-Y Converter family is categorized into four categories; L-Y, 2L-Y, 2LC-Y and 2LCm-Y converter. Four new 2LC-Y topologies (2LC-LVD, 2LC-2LVD, 2LC-2LCVD and 2LC-2LCmVD) converters are presented in this treatise which offer an...
Industry development and quality assurance in this field always addresses energy requirements that are likely to grow in the future. Among renewable energy sources, it is impossible not to mention the powerful increasing development of wind and sun energy systems. These sources of energy bring a large amount of electricity to almost all European countries. It is therefore possible to say that these...
The usage of monoblock single phase electric water pump for small-scale electric power generation at the off-grid area is beneficial in terms of cost, ease of construction, availability of spare parts and in terms of reliability. The problem found is the difficulty to maintain the output voltage and frequency of single-phase induction motor when operated as an electric induction generator especially...
In this paper, a novel topology of the high step-up multiphase galvanically isolated impedance-source DC-DC converter is proposed. It was derived by the input-parallel-output-parallel cascading of the asymmetrical quasi-Z-source half-bridge cells. The operating principle of the converter is explained by the steady state analysis. It was also demonstrated how the input current ripple of the converter...
This paper reports on the design, control and modelling of a novel Multi-Input-Multi-Output Boost Converter topology. The converter hub can integrate renewable energy sources such as wind turbines, photovoltaic arrays, fuel cells, etc. for provision of different output voltage levels. The advantage of energy sources integration is that the required output voltage levels could be made up from a range...
Power fluctuations in a micro grid are caused by disturbances due to the connection and disconnection of distributed generators including the irregular input of the sun and wind renewable energy. The objective of this paper is to improve the unstable power output responses of a renewable energy micro grid by designing and analysing storage strategies intended at power wavering compensation which solely...
This paper proposes the control strategy of a multi-input boost converter for renewable energy system applications. The desired high output voltage with a constant level can be achieved using the multi-input boost converter. The low multi-input voltage sources are generated from renewable energy sources such as PV modules and wind turbines. The control of the multi-input boost converter is based on...
The design of hybrid boosting converter has gained significant advantage of voltage regulation from its boost structure by the gain enhancement from its voltage multiplier structure. Many works are reported for the design of hybrid boost converter which consists of single switch, single inductor by employing bipolar voltage multiplier. The converters are designed with less component stress and small...
Resonance is a common problem of power quality in the renewable energy power generation system, and its suppression strategy is closely related to the safe and stable operation of the grid connected with the renewable energy. In this paper, the generation mechanism and related influencing factors of resonance are analysed at first by analysing the specific resonance problem of photovoltaic power station...
This paper analyzes the impact of converter design elements on the operating performance of DC/DC converters, used worldwide for renewable energy sources. The design of inductor and capacitor elements is made considering the acceptable output ripple of voltage and current. This paper presents the methodology for determining the inductances and capacitances required for DC/DC converter operation within...
Global warming might be one of the driving forces to develop electrical drive trains due to the ability of being powered 100% renewable. However, cost reasons are still a driving issue. Referring to electrical based powertrains, they rely on two separate power nets. Here electrical power must be transferred from the electrical drive train net to the standard net. This typically is realized employing...
A New breed of a buck boost converter, named as the XY converter family is proposed in this article. In the XY family, 16 topologies are presented which are highly suitable for renewable energy applications which require a high ratio of DC-DC converter; such as a photovoltaic multilevel inverter system, high voltage automotive applications and industrial drives. Compared to the traditional boost converter...
In this paper hybrid non isolated and non-invertingCockcroft-Walton multiplier based 2Nx InterleavedBoost converter (2Nx IBC) for renewable energy applications is presented. The presented hybrid boost converter topology is derived from non-inverting Nx Multilevel Boost Converter (Nx MBC) and inverting Nx Multilevel Boost Converter (Nx MBC). In renewable energy applications, generated voltage needs...
The development of dc transmission and distribution technologies are gaining traction. With renewable energy being fed to the grid constantly increasing, there is growing interest in development of dc grids. A major hindrance for their development is attributed to the lack of protection during short-circuit fault. Hybrid circuit breakers, a combination of mechanical and semi-conductor devices are...
A country's economic activity has a direct corelation with the energy scenario of that country. With the increase in the power demand and limited fossil fuels the renewable energy source plays a vital role to overcome these challenges. This paper presents a comparative study and performance analysis of synchronous SEPIC Converter and synchronous Zeta Converter by using PV system with MPPT technique...
In the recent era, distributed generation, micro grid, and smart grid has gained the attention and has become an important area of research to find solutions to overcome the difficulties raised due to energy crisis. Renewable energies derived from natural sources that are renewed continually and have various forms. Electricity and heat obtained from solar, wind, geothermal, hydropower, biomass, and...
Renewable energy systems are playing an important role to reduce CO2 emission and provide electricity for daily use in rural areas. But brand new components with up-to-date technology could be far too expensive for many potential users (rural communities in many developing countries. As a consequence, turning waste components into energy production systems could be a good opportunity to reach these...
In this paper hybrid non isolated/ non inverting Nx interleaved DC-DC multilevel Boost Converter for renewable energy applications is presented. The presented hybrid topology is derived from the conventional interleaved converter and the Nx Multilevel boost converter. In renewable energy applications, generated energy cannot be directly used at application end. In most of the cases it needs to be...
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