The power supply part of the automatic charging ERTG consists of a ground charging cabinet, a ground charging robot, an automatic charging socket on the RTG and battery room. RTG DC automatic charging robot is capable of accommodating multiple RTG models and compatible with AC charging.

This scheme adopts the RTG "pure battery power supply" power scheme, with the core goal of "peak shaving and valley filling" and energy conservation and consumption reduction. The system uses a large capacity high-voltage battery pack as the main energy power pool (with a capacity of approximately 400AH).

The energy flow core of the entire system is the DC bus. The DCDC device in the battery room and the inverter device in the electrical room are both connected to a common DC bus, working together to store, convert, and distribute energy. The inverter converts the DC power on the DC bus into AC power with adjustable frequency and voltage to precisely control motors (including hoist, gantry and trolley motors), convert electrical energy into mechanical energy and drive the crane to complete various actions.

Battery & Automatic Charging ERTG

Advantage:

1.    Fully electric operation with true zero emissions.

2.    Automatic charging with no manual intervention.

3.    Flexible RTG transfer between yard blocks.

4.    High level of automation with reduced labor requirements.

5.    Multiple RTGs can operate simultaneously.

Disadvantage:

1.    Long charging time reduces RTG utilization.

2.    High infrastructure investment, with charging facilities required in every yard block.