Results 41 to 50 of about 378,481 (208)
Impacts on Power Factor of AC Voltage Controllers Under Non-Sinusoidal Conditions [PDF]
Mehran University Research Journal of Engineering and Technology, 2012 AC-AC conversion is obtained with the help of Cyclo-converters, DC Link converters and AC Voltage Controllers. AC voltage controllers are also referred to as voltage regulators.
Mukhtiar Ahmed Mahar +2 more
doaj
Modified A-Source Converter Operating at Lower Voltage Stress [PDF]
IEEE Access, 2019 The coupled inductor based Z-source converter produces higher voltage gain with lower number of components count. In this paper, a new two winding mutually coupled inductor based Z-source DC-DC converter is proposed to boost the voltage gain. The proposed converter utilizes reduced number of passive elements count to produce higher voltage gain ...
Avneet Kumar +5 more
openaire +2 more sources
International Journal of Electrical Power & Energy SystemsIslanded grids play a crucial role in AC/DC distribution systems. The adoption of transformerless voltage-source converters as the primary power source is an important development direction for AC/DC distribution systems.
Yuze Li +4 more
doaj +1 more source
IET Renewable Power GenerationA large scale of distributed photovoltaics is accessed through a low voltage distribution network in a single‐phase or two‐phase, which causes three‐phase unbalance and over‐voltage problems.
Yu Fu +5 more
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Non-isolated high step-up DC–DC converter adopting auxiliary capacitor and coupled inductor
Journal of Modern Power Systems and Clean Energy, 2017 For grid-connected power system based on photovoltaic (PV) source and fuel cells, high step-up and high-efficiency DC–DC converters are needed, due to the bus voltage of the grid-connected inverter is much higher than the output voltage of PV and fuel ...
Gang WU, Xinbo RUAN, Zhihong YE
doaj +1 more source
Control-based fault current limiter for modular multilevel voltage-source converters
International Journal of Electrical Power & Energy Systems, 2020 The sharp rise in short-circuit currents of voltage-source converters is still a challenge for DC grid reliability, which imposes stringent requirements on DC breakers. Therefore, fault current limiters are used for slowing down the rise in short-circuit
V. A. Lacerda +5 more
semanticscholar +1 more source
Derivation of Voltage Source Multilevel Converter Topologies
IEEE Transactions on Industrial Electronics, 2017 Multilevel converters have gained popularity in both medium voltage and low voltage applications. To find out the connections between various multilevel voltage-source converter topologies and to reveal how to obtain new topologies, this paper has presented four methods to derive multilevel converter topologies.
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Reliability Evaluation of Voltage Source Converters for MVDC Applications [PDF]
2019 IEEE Innovative Smart Grid Technologies - Asia (ISGT Asia), 2019 The emerging Medium Voltage Direct Current (MVDC) distribution networks are becoming more attractive due\ud to their flexible control of power flow and lower losses compared to traditional AC networks. This will significantly increase the wide uptake of renewable energy sources. Voltage source converters (VSCs) are the main building blocks of modern DC
Abeynayake, Gayan +7 more
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Loop-at-a-Time Stability Analysis for Grid-Connected Voltage-Source Converters
IEEE Journal of Emerging and Selected Topics in Power Electronics, 2020 The instability phenomena caused by converter–grid interactions can be prevented by designing controllers with adequate stability margins. Yet, the multiple-input–multiple-output (MIMO) dynamics of grid-connected voltage-source converters (VSCs ...
Hongyang Zhang +6 more
semanticscholar +1 more source
IEEE Industrial Electronics Magazine, 2019 This article discusses the mathematical relationship between gridvoltage-modulated (GVM) direct-power control (DPC) and vector-current control (VCC) for three-phase voltage-source converters (VSCs).
Yonghao Gui +3 more
semanticscholar +1 more source