ABB ACBU-A1 Active Wind Power Converter

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1. Product Overview

The ABB ACBU-A1 is an Active Wind Power Converter designed for wind energy systems, converting AC or DC output from wind turbines into grid-compatible AC power. The converter features high efficiency, intelligent control, and fast dynamic response, optimizing turbine performance while ensuring grid power quality and stability.

The ACBU-A1 supports various turbine types, including Permanent Magnet Synchronous Generators (PMSG) and Doubly-Fed Induction Generators (DFIG), and provides control modes such as Voltage Source Control (VSC) and power factor regulation.

2. Main Technical Specifications

• Model: ACBU-A1

• Type: Active Wind Power Converter

• Applicable Turbine Types: PMSG, DFIG

• Rated Power: 1 MW (expandable by model)

• Input Voltage Range: 690–1000 V AC/DC (depending on turbine type)

• Output Voltage: 0.69 kV AC (grid dependent)

• Output Frequency: 50/60 Hz, synchronized to grid

• Efficiency: >97%

• Control Methods:

  • Voltage Source Control (VSC)

  • Power factor and active/reactive power regulation

• Overload Capacity: 120% for 1 minute

• Protection Functions:

  • Overcurrent, overvoltage, undervoltage protection

  • Short-circuit protection

  • Overtemperature protection

  • Anti-Islanding protection

• Communication Interfaces: Modbus, Profibus, Ethernet optional

• Operating Temperature: -20°C to +50°C

• Protection Class: IP54/IP65 (indoor/outdoor)

• Mounting: Indoor/outdoor cabinet installation

• Dimensions & Weight: Modular design, approx. 1200×800×2200 mm, 900 kg

3. Advantages and Features

1. High Efficiency and Reliability

• Conversion efficiency over 97% reduces energy loss.

• Industrial-grade components ensure long-term stable operation.

2. Intelligent Control and Optimization

• Grid-adaptive control with dynamic active/reactive power adjustment.

• Improves turbine energy yield and power quality.

3. Safety and Protection Functions

• Built-in overcurrent, overvoltage, undervoltage, short-circuit, and anti-islanding protection.

• Ensures safe operation and prevents equipment damage.

4. Modular Design and Easy Maintenance

• Modular construction allows easy installation, expansion, and maintenance.

• Supports remote monitoring and fault diagnostics.

5. Broad Application Compatibility

• Compatible with multiple turbine types and grid conditions.

• Suitable for both onshore and nearshore wind farms.

4. Typical Application Areas

• Onshore and offshore wind farms

• Grid-connected wind turbine power conversion

• Renewable energy system integration

• Distributed wind power and microgrid systems

• Wind power demonstration and research projects

5. Precautions

1. Confirm converter power rating and voltage match turbine and grid before installation.

2. Ensure proper grounding to prevent lightning and electrical interference.

3. Install in a well-ventilated environment; avoid excessive heat, humidity, or dust.

4. Electrical connections must comply with ABB and grid safety standards.

5. Regularly inspect cooling fans, module connections, and communication interfaces.

6. Protect equipment from moisture, salt spray, or corrosive environments (especially nearshore).

7. In case of alarm or fault, follow the operation manual and disconnect power for inspection.