Optimizing energy consumption in harbor cranes with DC/DC converters

In container ports, where efficiency and sustainability are becoming increasingly important, Epic Power's DC/DC converters offer an innovative solution for free-moving gantry cranes or RTG cranes. These cranes are often powered by diesel generators and can benefit significantly from energy storage via supercapacitors (supercaps). Combined with a bidirectional DC/DC converter, braking energy is utilized much more efficiently.

When lowering containers, the hoist motor acts as a generator: braking energy is released that is normally dissipated through resistance. By temporarily storing this energy in supercapacitor banks, it can be reused later when lifting containers. This not only reduces fuel consumption, but also reduces CO₂ emissions and increases the crane's dynamics. Lifting movements become faster, without a heavier generator.

The Epic Power DC/DC converter is the heart of the system. It regulates the energy flow between the supercaps and the drive electronics, supporting voltages up to 900 VDC. The converter is robust and suitable for the high power peaks common in RTG applications.

Field data shows that such a system can achieve energy savings of up to 40–50% on hoisting movements, with fuel savings of up to 20%. The combination of energy reuse and peak shaving makes this solution both sustainable and economically attractive.

Epic Power offers modular and customized systems for this purpose, easily adapting to available space, crane type, and power profile. A scalable and future-proof upgrade for any modern terminal.

The message Optimizing energy consumption in harbor cranes with DC/DC converters first appeared on Elincom.

Source: https://www.elincom.nl/nieuws/optimalisatie-van-energieverbruik-in-havenkranen-met-dc-dc-converters/