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Intensive research is being directed to renewable energy due to their significant features. The converter is the core of the renewable energy system. Recently, a converter topology called Modular Multilevel Converter (MMC) has been introduced whose main challenge is the balance of its Submodules (SMs) capacitors voltages. Hence, a voltage sensor is required for each SM to measure its capacitor voltage;...
The ease of expansion of power system and lowered cost made the use of modular converters in Renewable Energy System more common. Different configurations are implemented depending on the applications. Control strategies like fuzzy logic, droop method and charge control scheme are developed for achieving sharing of current and voltages among the converters. In this paper new modularization architecture...
In this paper, an on-board integrated battery charger based on central-tapped winding switched reluctance motor of electric vehicle is presented. All the components used for driving mode are employed in the charging process, and there is no need for hardware reconfiguration between charging and driving modes of operation. The solution can be connected directly to single-phase grid to perform charging...
Hybrid LV ac/dc microgrids are being considered for commercial buildings which bring new design requirements for the multiport converter aimed to interface both ac and dc grids. In this paper, we explore the potential to use two well-developed topologies for this targeted application. An optimization-based genetic algorithm which allows to find the best possible choices among different off-the-shelf...
With the demand increase for electricity, the ever-increasing awareness of environmental issues, coupled with rolling blackouts, the role of renewable energy generation will become even more significant. Instead of the traditional high-power energy storage and management system at the utility scale to implement PV firming, this paper proposes a new PV (panel-level) firming control algorithm using...
This paper presents the analysis and design of a boost converter with bipolar Dickson voltage multiplier. The bipolar Dickson voltage multiplier offers high gain with low stress on both capacitors and switches. Connecting bipolar Dickson cell to a boost converter yields several benefits such as an overall high static voltage gain and at the same time reduces the required inductance that ensures operation...
Renewable energy resources are connected to power grid through voltage source inverters. In these systems, the electric current entering into the grid is supposed to fulfill the IEEE criteria, so that high quality of power with less distortion is transported. Due to this, low pass filters like L, LC or LCL are applied by means of the inverter to minimize the harmonics getting into the grid. LCL filters...
Using the conventional boost converter in applications that require high-voltage-gain conversion have several challenges. The conventional boost converter can have high-voltage-gain ratio if only operates with an extremely high duty ratio. Also, the output diode might suffer from the reverse recovery phenomena at the high duty cycle and high-power applications. Therefore, a new topology is required...
This paper presents a novel interleaved high-gain DC-DC boost converter with Greinacher voltage multiplier cells (GVMC). The proposed topology consists of two stages: an interleaved boost stage to reduce the AC ripple on the input current and the voltage multiplier circuit to increase the voltage gain ratio. The voltage stress on active switches is lower than that from the conventional boost converter,...
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