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The operation and economics of flywheels only make sense for very short high power operations (2-25 seconds), such as grid support for very high peak loads (subways, etc.). Please also see my post on this topic 09-10-2021. Brian ------------------------------ Brian Jensen ----------------------- ...

Hi John, I don't know of specific studies, I met Sam Maslin from Eddy Energy at a two day energy summit at Stanford and he's working on energy storage at the distributed level: https://eddyenergy.co/about https://www.linkedin.com/in/sam-maslin-89374a10/ He should know of studies, I think it is a great ...

Hi David, If you are incorporating energy storage into your project, these guys make an interesting 3 phase solution: https://www.yottaenergy.com/yottaecosystem Brian ------------------------------ Brian Jensen ------------------------------

Hi Tracy, I would charge the car using AC (either 120V or 240V) for a couple of reasons: - Most EVs have on-board chargers that designed to perfectly take care of the battery regardless of state of charge (SOC) or battery temperature, a DC-DC system would have to be designed to talk to the vehicle ...

The only stationary application where it may make sense in my opinion is to smooth out the fluctuations at the transit substations. Dozens of 10-15 second full capacity high power cycles per day by trains entering and leaving the stations. ------------------------------ Brian Jensen brian@jensenenergyresearch.com ...

Unfortunately for the vast majority of applications the economics don't work to use flywheels. The possible exceptions are applications that cycle a million or more times (capturing and returning energy from subway train stops, extreme grid stability issues). Power density of flywheels is a little better ...