Fujitsu Laboratories has demonstrated quantum-inspired technology for potentially commercial use. The Digital Annealer, Fujitsu's computational architecture inspired by quantum phenomena, can be used to maximise the performance of magnetic devices essential for renewable energy harvesting.
Energy-harvesting devices, which convert vibrations from motors, engines, bridges and buildings into electricity, eliminate the need for power transmission cables, battery replacement and charging for many applications. For example, they could supply electricity to Internet if Things (IoT) devices installed both indoors and outdoors, as well as for the on-board power supply of wearable devices and automotive components.
Magnetic devices used for environmental power generation typically create magnetic flux through the arrangement of a large number of small magnets. For the best power generation efficiency, an energy harvesting device must ensure that the magnetic flux density coming from magnets in the device is maximised relative to the location of the coil.
The layout in which a number of magnets is arranged in a row (1D) with a concentration of magnetic flux on one side is well-known. Arranging the magnets as a sheet or plane (2D) will increase the amount of power generated.
The optimal planar (2D) arrangement for maximising power generation efficiency remains difficult to calculate due to the enormous number of potential combinations of arrangements of magnets, however. The number of possible combinations of magnet orientations when 10 x 10 magnets are arranged in a square shape along a three-dimensional coordinate axis is more than 77 to the power of 10, Fujitsu said.
To overcome this challenge, Fujitsu has developed technology in collaboration with Professor Hajime Igarashi of Hokkaido University's Institute of Information Science. The solution utilises the Fujitsu Digital Annealer to calculate - in a matter of seconds - how to arrange each magnet to achieve maximum magnetic flux density.
The researchers were able to improve the magnetic flux density by 17% and the power generation efficiency of the energy harvesting device by 16% compared with the conventionally-designed two-dimensional array. This technology is also expected to be applied to the optimisation of magnet arrays for linear motors, where magnetic flux density must be controlled as intended for higher performance.
Fujitsu Laboratories plans to implement this technology as one of the professional services for the Digital Annealer in fiscal 2020.
Energy-harvesting devices, which convert vibrations from motors, engines, bridges and buildings into electricity, eliminate the need for power transmission cables, battery replacement and charging for many applications. For example, they could supply electricity to Internet if Things (IoT) devices installed both indoors and outdoors, as well as for the on-board power supply of wearable devices and automotive components.
Magnetic devices used for environmental power generation typically create magnetic flux through the arrangement of a large number of small magnets. For the best power generation efficiency, an energy harvesting device must ensure that the magnetic flux density coming from magnets in the device is maximised relative to the location of the coil.
The layout in which a number of magnets is arranged in a row (1D) with a concentration of magnetic flux on one side is well-known. Arranging the magnets as a sheet or plane (2D) will increase the amount of power generated.
The optimal planar (2D) arrangement for maximising power generation efficiency remains difficult to calculate due to the enormous number of potential combinations of arrangements of magnets, however. The number of possible combinations of magnet orientations when 10 x 10 magnets are arranged in a square shape along a three-dimensional coordinate axis is more than 77 to the power of 10, Fujitsu said.
To overcome this challenge, Fujitsu has developed technology in collaboration with Professor Hajime Igarashi of Hokkaido University's Institute of Information Science. The solution utilises the Fujitsu Digital Annealer to calculate - in a matter of seconds - how to arrange each magnet to achieve maximum magnetic flux density.
The researchers were able to improve the magnetic flux density by 17% and the power generation efficiency of the energy harvesting device by 16% compared with the conventionally-designed two-dimensional array. This technology is also expected to be applied to the optimisation of magnet arrays for linear motors, where magnetic flux density must be controlled as intended for higher performance.
Fujitsu Laboratories plans to implement this technology as one of the professional services for the Digital Annealer in fiscal 2020.
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