The standard industry practice is to dump that energy into a braking-resistor, which wastes energy & increases the burden on the building air-conditioning system. Instead, with a shared-DC-bus, the energy from a stopping machine powers the other machines on that shared-DC-bus.
Energy can also be dumped into a braking-resistor, for those rare instances where the regenerated power exceeds the consumption of the other running machines,
This shared-DC-bus power-supply is rated at 124,000 watt continous DC output.
The caged brake-resistor (top of the unit) can absorb up to 100,000 watts for short periods of time.
The unit contains a PCC control-computer which provides "smart" functions like
Approximately 2 shared-DC-bus power-supplies are installed (wired in parallel), for every 20 textile-winding-machine panels, which allows the system to operate normally even when one power-supply is offline (e.g. for a maintenance event like fan-replacement).