Results 11 to 20 of about 8,004 (311)
Energies, 2023 To address the problem of winding turn-to-turn breakdown faults in 35 kV dry-type transformers in wind farms under overvoltage conditions, this paper establishes a simulation model based on the structural dimensions and material parameters of the ...
Ziheng Pu +4 more
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EnergiesThis research aims to present a study of the effects of the Tesla transformer in order to find the proper dimensions. We created a design of the Tesla transformer to reduce the high-voltage electric field-stress problem that happens between primary ...
Nattachote Rugthaicharoencheep +1 more
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Low voltage winding insulation systems under the influence of high du/dt slew rate inverter voltage
Archives of Electrical Engineering, 2020 Variable speed and low voltage electrical drives are commonly operated by frequency converters. According to recent developments, there is a trend in the area of semi-conductors, that switching frequency and voltage slew rate will increase significantly.
Florian Pauli, Andreas Ruf, Kay Hameyer
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Different Virtual Stator Winding Configurations of Open-End Winding Five-Phase PM Machines for Wide Speed Range without Flux Weakening Operation [PDF]
, 2013 This paper presents a specific control strategy of double-ended inverter system for wide-speed range of open-winding five phase PM machines. Different virtual winding configurations (star, pentagon, pentacle and bipolar) can be obtained by choosing the ...
NGUYEN, Ngac Ky +12 more
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High Voltage, 2018 Interleaving of the high-voltage winding turns is a widely-accepted method for restraining the surge voltage stresses in extra high voltage (EHV) transformers.
Shampa De +3 more
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Control Strategies for Open-End Winding Drives Operating in the Flux-Weakening Region [PDF]
, 2013 This paper presents and compares control strategies for three-phase open-end winding drives operating in the flux-weakening region. A six-leg inverter with a single dc-link is associated with the machine in order to use a single energy source.
KESTELYN, Xavier +4 more
core +1 more source
Experimental studies on power transformer model winding provided with MOVs
Journal of Electrical Systems and Information Technology, 2017 Surge voltage distribution across a HV transformer winding due to appearance of very fast rise time (rise time of order 1 μs) transient voltages is highly non-uniform along the length of the winding for initial time instant of occurrence of surge.
G.H. Kusumadevi, G.R. Gurumurthy
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High Step-Up Three-Port Converter for Renewable Energy Systems
IEEE Access, 2023 In this paper, a high voltage gain non-isolated three-port converter with a three-winding coupled inductor is proposed for renewable energy system. By implementing a cascoded structure where a photovoltaic (PV) source is stacked on top of a battery ...
Tsorng-Juu Liang +4 more
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High-Voltage Hybrid Generator and Conversion System for Wind Turbine Applications [PDF]
IEEE Transactions on Industrial Electronics, 2018 This paper presents the design of a high voltage hybrid generator (HG) and conversion system for wind turbine applications. The HG combines wound field (WF) and permanent magnet (PM) rotor excitations. At any given speed, the PM induces a fixed stator voltage while the WF induces a variable controlled stator voltage.
Omid Beik, Nigel Schofield
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IEEE Access, 2018 This paper compares three shaft-sensorless control schemes for wound-field flux-switching machines based on a high frequency (HF) square-wave voltage injection technique.
Hong Quan Nguyen, Sheng-Ming Yang
doaj +1 more source