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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 ...
Optimal sizing ratio of a solar PV inverter for minimizing the levelized cost of electricity in Finnish irradiation conditions
(Elsevier, 2019-05-01)
The amount of installed solar power in Finland is increasing as a result of decreasing photovoltaic (PV) system component prices. The growth is especially noticeable in residential systems, and ways to make PV electricity ...
Sensitivity analysis of a PLC-based DSSS anti-islanding system in power distribution grids
(Elsevier, 2019-06-14)
As smart grid applications, distributed generation, and microgrid technologies have become more widespread, new safety-related issues have arisen. Unintentional islanding is an example of a grid fault that may result in ...
Power-to-X technology using renewable electricity and carbon dioxide from ambient air: SOLETAIR proof-of-concept and improved process concept
(Elsevier, 2018-10-15)
This work demonstrates hydrocarbon production directly from water, solar energy, and air—called SOLETAIR. The plant includes direct air capture (DAC) of carbon dioxide, hydrogen production by water electrolysis, and two-step ...
Optimal dimensioning of a solar PV plant with measured electrical load curves in Finland
(Elsevier, 2018)
The amount of installed solar power in Finland tripled in 2016, reaching 27 MWp. In Finland there are no feed-in tariffs, and with the low price of electricity together with the annual distribution of insolation concentrating ...
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 ...
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 ...
Techno-economic viability of energy storage concepts combined with a residential solar photovoltaic system: A case study from Finland
(Elsevier, 2021-06-05)
Solar photovoltaic systems have been growing in popularity in prosumer households as a means of increasing the share of renewable energy and decreasing electricity import. The available self-consumption is, however, limited ...
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 ...
Effect of power quality on the design of proton exchange membrane water electrolysis systems
(Elsevier, 2020-09-29)
Water electrolyzer technologies may play a key role in the decarbonization of the fossil-fueled world economy. Electrolytic hydrogen production could bridge emission-free power generation and various energy end-use sectors ...