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The Solid-State Shift: Reinventing the Transformer for Modern Grids

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58 points JumpCrisscross | 1 comments | 12 Apr 25 18:23 UTC | HN request time: 0.246s | source
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Calwestjobs ◴[12 Apr 25 18:40 UTC] No.43666910[source]▶
figure no. 1 is missing green color on HVAC transmission line. i do not have ExTwitter and i do not know other way to let them know.

it is interesting to think about human made object in terms of how much materials they use, for example big old transformer contains 2 tons of iron, new solid-state transformer with same capacity uses only 300 kg of silicon (Si), 120kg kg of plastics and 50 kg of copper.

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1. wbraun ◴[12 Apr 25 19:55 UTC] No.43667453[source]▶
Where are your weight figures coming from, they are not in the linked article.

Packaged semiconductors are going to be more metal interconnect / plastic encapsulation / ceramic insulation than silicon by weight.

These systems will also have a significant weight fraction in magnetic materials, either ferrite ceramics or amorphous metals.

Still a huge weight savings, but the weight fractions you are giving see off and are missing some important materials.