The Mechanical Battery
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Published 2019-11-14
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James Hargreaves - Spin Doctor
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Steam Engine
1897 Robb Armstrong Steam Engine
• 1897 Robb Armstrong Steam Engine
Magnax Axial Flux Permanent Magnet Electric Motor / Generator
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Cisco DC2011-Texas: Flywheels for Backup Power
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All Comments (21)
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Little known fact - Kevin Costner bomb "Waterworld" was meant to actually save the world. The plan was to channel Kostner's profits to his brother, Dan, who ran US Flywheels. This company was working on a flywheel that stored useful amount of power in a carbon fiber flywheel rotating on permanent magnet bearings in a vacuum. The spec was to develop such a flywheel that could reach speeds of around 100,000 RPM. When the movie bombed, the investment was, alas, lost. The company folded decades ago.
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We have two of these at work. They are rotary UPSs. They are spun up with power from the grid. They are constantly spinning at 1800 rpm. Connected to generators, automatic transfer switches will switch to them whenever we loose the grid. It will provide 1.5 MW of power for 15 seconds. When grid power is lost not only do they provide power long enough for diesel generators to fire up but they clutch start their own diesel generators to keep them spinning. No batteries needed!
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14:51 man he's loving his job
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Imagine if this gets implemented in the automotive world, and after a car accident and the enclosure is broken the flywheel is sent 8km down the road
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This is very educational. It says everything it needs in terms of engineering, and still also makes sense to non-technical people. What appeals to me most is that flywheels, due to their inertia, are able to bridge gaps in power with low sudden changes, so that systems have time to adapt if need be.
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I was nearby a flywheel energy storage research and manufacturing building when one of them catastrophically failed causing a mechanical explosion that shot tons of twisted metal in all directions. Some of the metal fell through the ceiling where I was working. Luckily nobody was hurt. Any kind of mass energy storage will have issues like this however. Releasing tons of energy all at once is dangerous no matter what the technology is.
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I worked on one of these years ago but I could never breed the hamsters big enough or build the flywheel small enough to be effective.
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Glad to finally see some coverage of this idea. I like the idea of flywheels that clutch in while breaking and then release it back to the tire when accelerating.
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“Requires little to no maintenance”* *provided preventative maintenance is performed at regular intervals
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I didn't hear it mentioned, but we do actually have a ginormous flywheel energy storage system in form of the rotating mass in the electric network, both the generators and the motors. This is not usually apparent, but powerplants do rely on this during switchover etc. and locally dealing with high inertia motors and variable frequency drives they can keep the dc bus energized as long as they spin.
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Really nice introduction to a topic most of us are not familiar with. Seems one of the best technologies for grid storage.
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Thank you for this video. I remember seeing a video right here on Youtube about a company making flywheel storage that powered up a flywheel during low power demand periods and then generating power when power demand was high. It claimed low cost, near zero maintenance, and the flywheel could spin virtually forever. It used a flywheel in an enclosure with a near vacuum inside.
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Elektromagnetic bearings do have losses additional to their supply current: Hysteresis and eddy current losses in the iron.
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These busses would behave quite weirdly when running into speed bumps or transitioning into steep slopes...
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i dont know how long its been since I've been drawn to the content made by a single channel. absolutely amazing content!
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When I did my work experience at IBM, they had flywheel UPS systems. I suspect you could also use them as surge protectors. And I reckon gasworks regulated supply pressure (gravity battery) It was the early 90s.
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Somewhere around 20 years ago, maybe 30, I saw a car that had a dozen small flywheels, all gimballed. Each unit was about 2 litres volume. They fit into the standard engine space, along with the electric traction motor. This solution seems possible, small units that are easy and cheap to make and install. It gets past the gyro problems of planetary rotation and turning, climbing hills etc.
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We live on a huge Flywheel called the earth.
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What a marvelously informative and thorough video. Many people don't tell the audience the complete detail. You do and thank you for that.
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I love this video. I don't know about anyone else but for the longest time I've had a sort of obsession with fly wheels. I always knew how useful they could be. I never thought to think how there could be such a science to this and how much effort has and will be put into flywheels. This video almost makes me feel complete lol so weird how a video could make me feel so justified in my feelings for the most random of things.
