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Effect of Converter Topology on the Specific Energy Consumption of Alkaline Water Electrolyzers
(IEEE, 2018-10-17)
Water electrolysis will be used to produce renewable hydrogen for energy storage and Power-to-X applications in the future renewable-energy-based energy systems. Therefore, the energy efficiency of hydrogen production will ...
Normalization-Based Approach to Electric Motor BVR Related Capacitances Computation
(IEEE, 2019-02-11)
Electrical discharge machining bearing currents that may occur within electric machines of variable-speed-drive motor systems have been recognized for a long time. One key influential factor, the machine's capacitive voltage ...
Variable-speed-drive-based method for the cost optimization of air filter replacement timing
(Elsevier, 2021-03-13)
The flow resistance of air filters accounts for a significant share of the electric energy consumed by fan systems. Due to their inevitable fouling, filters must be replaced periodically. This paper presents a novel ...
Mitigation of inverter-induced noncirculating bearing currents by introducing grounded electrodes into stator slot openings
(IEEE, 2020-12-23)
Modern converter-supplied AC motors are exposed to bearing currents. Despite extensive research and development, the industry still does not have a final solution with acceptable cost and high efficiency. This paper focuses ...
Power quality and reactive power of water electrolyzers supplied with thyristor converters
(Elsevier, 2020-03-28)
Industrial water electrolyzers apply direct current in kiloampere ranges. Therefore, rectifiers are typically based on thyristors despite the high amplitude current fluctuation excited by the rectifier. This paper studies ...
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, ...
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 ...
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, ...