Energy-Saving Storage System Cuts Costs, Emissions

Description

Energy recovery is now available as an option with all KASTO storage systems. The electric circuits for the drive shafts of the operating gantry crane (OGC) are connected through a DC link. Surplus kinetic energy, such as that produced in braking of the OGC or lowering of lifting gear, can be converted into electricity and fed back into the grid. The energy can then be used for other purposes – either within the storage facility or by other users in the company grid. Consumption of electric power can be reduced by as much as 40 percent compared to conventional drive systems.

 

To achieve even greater efficiency, KASTO is now also optionally equipping its storage systems with an integrated energy storage unit upon request. The unit temporarily stores surplus energy in double-layer capacitors for use as needed. An intelligent controller charges and discharges the energy storage unit depending on the process currently running. The energy remains in the system until it can be used. Power is drawn from the grid at a nearly constant level, allowing peripheral equipment to operate at the rated load. In this way, users can reduce the connected load of the OGC by more than 50 percent. The energy storage allows saving additional costs by avoiding load peaks.

 

Besides significant reductions in power consumption and CO2 emissions, KASTO’s new technology has the advantage that operators of storage facilities can often use smaller transformer stations. This reduces not only the costs of operation but also investment costs. The purchase will pay for itself in a very short time. Existing KASTO storage systems can also be retrofitted with energy recovery and storage.

 

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