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Mitigating noncirculating bearing currents by a correct stator magnetic circuit and winding design
(IEEE, 2020-04-06)
Different mechanisms by which bearing currents flow inside the electrical machine are well studied. In contrast, investigation and development of different techniques to mitigate these currents remain a field for improvement, ...
Investigation of a Direct Liquid Cooling System in a Permanent Magnet Synchronous Machine
(IEEE, 2019-10-08)
A high demand for electrification of the transport sector has resulted in a need to provide compact and reliable electric power trains where the electric machine is a key element. The cooling system has a strong impact on ...
Power quality estimation of water electrolyzers based on current and voltage measurements
(Elsevier, 2019-12-23)
The ripple of the supplied direct current has a significant effect on the energy efficiency of the water electrolyzer cell. Hydrogen production is defined by the current mean value, but current harmonics generate additional ...
Comparison of thyristor and insulated-gate bipolar transistor -based power supply topologies in industrial water electrolysis applications
(Elsevier, 2021-02-14)
The demand for green hydrogen is growing as the increasing production of pure hydrogen can no longer be based on fossil hydrocarbons. As water electrolysis would move from niche to a significant consumer of emission-free ...
Determination of High-Frequency Harmonic Power in Converter-Fed Motors
(IEEE, 2022-10-13)
This paper focuses on usage of frequency domain power analysis on harmonic power extraction in converter-fed motor measurements. Synchronous generator and frequency converter supplies are compared in 16 operating points ...
On the application of extended grounded slot electrodes to reduce non-circulating bearing currents
(IEEE, 2022-05-11)
Power-electronic-Inverterconverter-induced motor bearing currents are a widespread problem in the field of electrical drives. Parasitic capacitances between the electrical machines parts provide a path for leakage currents, ...
Design and Manufacturing of a Modular Low-Voltage Multi-Megawatt High-Speed Solid-Rotor Induction Motor
(IEEE, 2021-05-26)
High-speed solid-rotor induction machines (HSIMs) are popular within high-speed applications because of their high rotor structural integrity and their fairly well-established manufacturing process guaranteeing high quality ...
A facility for mixed flowing gas testing of and experimentation with power electronic components and systems
(IEEE, 2020-10-07)
Corrosion phenomena have been found to inflict new types of failures on power electronics. Currently, the precise corrosion mechanisms and effects causing problems are largely unknown. A facility dedicated for environmental ...
Loadability of Converter-fed Induction Machine
(IEEE, 2023-10-02)
The main dimensioning principle of an electrical machine is the temperature rise that is directly related to losses of the machine. When PWM–supply is used, an additional high frequency switching frequency dependent loss ...