Port Oil-to-Electricity Conversion Solution

Project Overview

The traditional Rubber Tyred Gantry (RTG) cranes, powered by diesel generator sets, are notorious for their high energy consumption, noise pollution, and exhaust emissions. These inefficiencies are further highlighted by the wasteful dissipation of potential energy through braking resistors during RTG deceleration.

RTG oil-to-electricity conversion project at Hutchison Whampoa's Hong Kong terminal.

Customer Needs

1. To address the energy waste and environmental impact of diesel-powered generators.

2. To alleviate the strain on the port's AC power grid and enhance its capacity.

3. To harness the electrical energy generated by the RTG's motor during descent, rather than wasting it through braking resistance.

VEICHI's Solution 

Drawing on its extensive expertise in industrial automation, VEICHI Electric, in conjunction with its subsidiary LONGi Electric, has crafted a solution featuring the AC800 series AFE active rectifier, DCDC converter, and inverter application. This innovative setup ensures energy storage and release, providing reliable power to RTG equipment.

AC800 Series Engineering Multi-drive Inverter

1. When battery power is ample, it is discharged through the DCDC converter to support RTG lifting operations.

2. During RTG descent, the motor's electrical energy charges the battery, enhancing energy efficiency.

3. Should battery power falter, the diesel generator kicks in, charging the battery via the AFE active rectifier and DCDC converter.

System Topology

Oil-to-Electricity Conversion System Topology

Solution Advantages

Oil-to-Electricity Conversion Solution Advantages

1. Energy Efficiency

Batteries replace diesel generators, boosting energy efficiency and mitigating environmental concerns.

2. Emission Reduction

Motor-generated electricity during RTG descent is used for charging, promoting energy conservation.

3. Intelligent Control

DC chopper control technology with adaptive Buck and Boost modes ensures smart and efficient battery charging and discharging.

4. High Power Utilization

Active rectifier control technology ensures a grid-side power factor exceeding 99% at rated power.

5. Quality Power Output

Inverter power control technology guarantees a system output with a Total Harmonic Distortion (THD) of ≤5%, delivering high-quality sinusoidal AC power.

6. Energy Flow Optimization

A common DC bus design facilitates energy's two-way flow, reducing overall system power consumption.

Looking ahead, VEICHI Electric is committed to evolving with market demands, intensifying R&D efforts, and enhancing product performance and service quality to offering superior power energy solutions, fostering clean energy technologies, and supporting the industry's sustainable development.