Shore-Base Marine Power Supply Solution

Overview

VEICHI’s 2MVA frequency conversion solution for shore power system adopts an impressively integrated container structure capable of multiple output circuits configuration to supply power for one or more berths simultaneously, which is hammered out from the AC800 series engineering AC drive for multiple motors with years of independent research and development. Output will vary according to the power source thus it can produce lower noise and no carbon emission at all while higher power density in smaller body, which is especially designed for ships resting in ports to provide a smoother way towards green ports and green shipping construction.

VEICHI 2MVA frequency conversion solution for shore power system

Advantages of VEICHI Shore-Base Marine Power Supply Solution

VEICHI shore power system solution, with excellent product features and key technical highlights, reduces energy consumption and pollution emissions of ships, and at the same time improves working efficiency and operating costs of the ports that are combined together to form a mature working mechanism for long term operation, thus it is bound to become a thruster in the field of shore power supply.

VEICHI shore base marine ac drive

Function Features

1. Dual Core for Stable Operation & Control

Fast and accurate control can be realized by ARM+FPGA dual chip architecture.

2. Voltage Compensation for Remote Transmission

Unique line voltage compensation function solves the problem of large line voltage drop during long-distance power supply.

3. Centralized Monitoring for Efficient Management

Monitoring covers equipment operation, power quality and fault self-diagnosis.

4. Modular Design with High Integration

Compact and smaller bodies are easy to maintain and capable of high-power density output.

5. Fiber Optic Drive for Strong Interference

Control is performed via the optical fiber drive to enhance the anti-electromagnetic interference and system reliability.

6. Accurate Protection for Trustworthy Safety

Rapid response is realized to high temperature, high humidity, high corrosion, heavy load impact and other harsh conditions to guarantee system safety.

7. Continuous Power Supply with No Stops

When system fault occurs, uninterrupted power supply is ensured by derated operation.

8. Parallel Modules for Strong Power

Multiple modules can be installed in parallel to deliver power up to 5600 kW.

Technological Highlights

Output voltage closed-loop control technology

When unbalance is higher than 20%, the three-phase line voltages can be always kept symmetrical.

Inverse power control technology

VEICHI’s algorithm suppresses the generation of inverse power by frequency conversion control with the software.

AFE active front-end rectification technology

PWM rectification leads to strong adaptability and low interference and keeps the total harmonic distortion (THD) lower than 5%. And reactive compensation makes the system power factor close to 1, so no additional compensation equipment is required.

Low harmonic output control technology

High carrier frequency and LC filtering are designed on AC800 series products to ensure that output current is close to sinusoidal waveform and THD is lower than 3% to cope with the complex working condition of shore power.

CBC current limit control technology

CBC current limit suppresses that the inrush excitation current at the moment of circuit conduction when the front end of the load is equipped with a transformer to ensure the normal operation and power supply.

Parallel current sharing technology

The current sharing control algorithm between the power units to conduct perfect current sharing.

Summary

VEICHI 2MVA shore power system solution has been successfully put into use to a dock in Jiangsu Province and shows strong reliability, safety and quality, and in the future, it will continue to focus on the changes and needs of various industries, and develop new efficient and trustworthy system solutions by technological innovation to contribute to higher degree of digitalization, intelligence and energy conservation of national industries.