Robotized Surface Mounting of Permanent Magnets

Hultman, Erik; Salar, Dana; Leijon, Mats

doi:10.3390/machines2040219

Cited by 12 publications

(5 citation statements)

References 15 publications

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“…The last WEC examined is a near-shore seabed-based buoy (Figure 3A) located 2 km from the coast in shallow waters, as described by Short (2012). The main reference device was the third generation of Seabased's patented technology developed at Uppsala University (Sweden), with a rated power of 30 kW (Leijon et al, 2008;Hultman et al, 2014). The system is composed of a floating body connected via a steel wire to a linear PTO generator lying on the seabed.…”

Section: Methodsmentioning

confidence: 99%

“…The composition of the direct driven magnetic part of the generator, the translator, was modeled following the study of Dahlsten (2009). To promote the reduction of material and production costs, the translator was assumed to be designed with a ferrite magnet, replacing the previous neodymium (NdFeB) magnet, which was less impactful and cheaper, even if less stronger (Chatzigiannakou et al, 2014;Hultman et al, 2014). The device works as a point absorber able to exploit energy independently of wave direction due to the small sizes in comparison with the wavelength (Curto et al, 2021).…”

Section: Methodsmentioning

confidence: 99%

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Benchmarking marine renewable energy technologies through LCA: Wave energy converters in the Mediterranean

Bruno

Maccanti²,

Pulselli³

et al. 2022

Front. Energy Res.

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The present work evaluates the environmental performance of three wave energy converters including on-shore oscillating water columns and oscillating floaters embedded in piers, and near-shore seabed-based buoys in the Mediterranean Basin. The life cycle assessment methodology was used to account for their potential environmental impact, in terms of carbon footprint (t CO2eq), considering four main phases, i.e., manufacturing of material components, assembling and installation on site, maintenance in time, and decommission end of life. Results show the greenhouse gas emission from different lifecycle processes, based on the inventory of main energy inputs and materials, highlighting the major impact of the manufacture of the structural components (52 %), especially due to the limited durability of materials. In order to compare the performances of the three different wave energy converters, the carbon intensity of electricity was evaluated considering a range of electricity production per technology based on data available in scientific literature. The results obtained for a single device (203–270 g CO2eq‧kWh−1 for the oscillating water column system; 94–374 g CO2eq‧kWh−1 for oscillating floater and 105–158 g CO2eq‧kWh−1 for the seabed-based buoy) highlight that wave energy converters are promising solutions to harvest wave energy, showing lower carbon intensity of electricity values compared to fossil energy sources; nevertheless, technological improvements are needed to increase efficiency and achieve the performances of other renewable energy sources. Moreover, the combination of wave energy converters with other solutions, such as offshore wind turbines, represents a valuable option in the future to increase productivity and foster energy transition of the Mediterranean regions.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Benchmarking marine renewable energy technologies through LCA: Wave energy converters in the Mediterranean

Bruno

Maccanti²,

Pulselli³

et al. 2022

Front. Energy Res.

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“…Furthermore for the assembly of large electri are used. An example is given in an artic University of Uppsala [1] describing a fully a for mounting magnets onto a translator for energy converter via two industrial robot mounting tool.…”

Section: State Of the Art And Objectivesmentioning

confidence: 99%

Innovative developments for automated assembly and fixation of integrated permanent magnets in rotors of synchronous machines

Mahr

Meyer

Hofmann

et al. 2015

2015 5th International Electric Drives Production Conference (EDPC)

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Automation in the field of magnet handling and rotor assembly for permanent magnet synchronous motors is growing constantly, due to rising market share of high output motors. In the past, especially at the institute FAPS, large efforts have been made to reduce the amount of manual processes for maintaining market expansion and the increase of efficiency of the electric machine. Current research work has the aim of increasing the grade of automation even for large numbers of variants with low investment. In this paper two different demonstrators one for handling and one for the fixation of magnetized high coercive magnets are presented. The handling device inserts magnets of different dimensions in cavities vertically. For demonstrating an integrated fixation process an existing magnet assembly unit has been modified to enhanced functionality. Both devices offer fully automated operation ability within a wide portfolio of different rotor types and magnet dimensions.

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“…Working shifts (dynamically adjusted) 1-3 Electricity price k E [6] 26.64 ct∕kWh Running costs of facitlity K qm [22] Production machine data Author contributions JH and NN developed the methodology, created the model and wrote the initial draft of the paper together. JH finalized the paper, created the preprint version and managed the review process.…”

Section: Appendixmentioning

confidence: 99%

Production cost modeling for permanent magnet synchronous machines for electric vehicles

Hemsen

Nowak

Eckstein

2023

Automot. Engine Technol.

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A cost model for the estimation of production costs of permanent magnet synchronous machines (PMSM) is presented, which allows to alter design choices such as wire technology, winding layout, cooling system, materials and more. With the goal to make results reproducible by others, the methods are explained in detail and used data and assumptions are given. The developed model helps to understand the interaction between the design of PMSM, manufacturing methods and the resulting costs. With it, different PMSM technologies and materials can be evaluated regarding its influence on the production costs, which is a perquisite to find the best compromise between performance and costs. Production volume is shown to be the most decisive factor for the resulting production costs. Between minimum and maximum assumed volumes, an average cost per unit reduction of 67% could be observed. Furthermore, the results imply that the winding production is responsible for the greatest part of the overall costs, followed by the rotor assembly (including rare earth magnets). When using the model to compare different wire types, it can be stated that up to a production volume of roughly 150,000 units/year, hairpin wires are more expensive to produce. Above this volume, hairpin windings will get cheaper than round wire windings due to its higher grade of automation of the production process. Through the conducted investigations and the presented results, it is demonstrated that the cost model can serve to evaluate technologies with regards to costs in the early development stage. This way a more holistic assessment of technologies for PMSM is possible, helping to find the ideal compromises between costs and performance and to increase the attractiveness of sustainable mobility.

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Robotized Surface Mounting of Permanent Magnets

Cited by 12 publications

References 15 publications

Benchmarking marine renewable energy technologies through LCA: Wave energy converters in the Mediterranean

Benchmarking marine renewable energy technologies through LCA: Wave energy converters in the Mediterranean

Innovative developments for automated assembly and fixation of integrated permanent magnets in rotors of synchronous machines

Production cost modeling for permanent magnet synchronous machines for electric vehicles

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