PCS6000 system GBU72 converter 3BHB056371P0010

System Role: The GBU72 is a core component of the ABB PCS6000 medium-voltage wind turbine converter and belongs to the Grid Breaker Unit (GBU). It is responsible for intelligent control, status feedback, and interface communication of the grid-side circuit breaker.

Key Functions:

Breaker Control: Provides precise control of grid-side circuit breaker closing/opening, supporting power-on sequencing, main circuit isolation, and safety lockout logic.

Synchronization Management: Integrated grid synchronization detection ensures phase and frequency synchronization between the wind turbine converter and the grid, improving grid connection stability. MITSUBISHI QM100HY-H Q Series Digital I/O Module

Communication Interface: Supports data exchange with ABB modules such as the Power Interface Module (PMI), Power Electronics Controller (PEC), and Human Machine Interface (HMI), and is compatible with industrial protocols such as Profibus DP and Modbus TCP.

Environmental Adaptability: The GBU72 utilizes a corrosion-resistant design to withstand the high salt spray and high vibration environments of offshore wind power generation, with an operating temperature range of -40°C to +125°C.

Core Technology and Specifications

Product Positioning: The ABB PCS6000 is a medium-voltage, full-power wind turbine converter designed for large onshore and offshore wind turbines ranging from 4-15 MW (supporting up to 12 MW for offshore wind turbines). It utilizes a three-level NPC (Neutral Point Clamped) topology, supports four-quadrant bidirectional power flow, and boasts an efficiency of ≥98%.

Key Parameters:

Voltage and Power: Generator-side/grid-side voltage 0-3.4 kV, supports 50/60 Hz grid frequency, and has a power range of 4-15 MW (expandable to 15 MW onshore/12 MW offshore).

Cooling System: Water-cooled, closed-loop design, suitable for transport temperatures from -25°C to 70°C and operating temperatures from -10°C to 45°C, with an IP54 protection rating.

Control and Interface: Supports protocols such as Profibus DP, Modbus TCP, and EtherCat, features built-in sensorless algorithms, and is compatible with the ABB AC 800PEC PLC control system.

2. Certification and Standards

International Certifications: Certified by CGC (China Renewable Energy Certification), DNV-GL (Offshore Wind Standard GL-IV-2:2012), UL (North American Safety Certification), and IEC 61400 wind power standards, it complies with the grid codes of many countries worldwide. ABB PCD232 A 3BHE022293R0101 Communication I/O Module

Testing and Verification: Functional testing, thermal operation testing, vibration testing, EMC testing, and fault ride-through (LVRT/HVRT) capability verification ensure reliability in extreme environments.

Application Scenarios

Wind Power: Suitable for full power conversion in large wind turbines, supports tower base or nacelle installation, and is compatible with permanent magnet and induction generators. Its high power density and corrosion resistance (such as salt spray protection) are particularly critical in offshore wind power.

Energy Storage and Industrial Applications: While primarily targeted at wind power, its modular design also supports energy storage systems (such as peak-valley arbitrage and dynamic capacity expansion) and industrial drive scenarios, enabling flexible configuration through power module expansion.

It can be expanded to energy storage systems (e.g., peak-valley arbitrage and dynamic capacity expansion), supporting bidirectional charging and discharging as well as smooth on-grid and off-grid switching.

It is suitable for high-power drive applications such as metallurgy and mining, ensuring safe control of high-voltage motor startup and shutdown.

Installation and Maintenance

Installation requirements: Comply with the IEC 61400-2 safety standard and ensure electrical clearances, creepage distances, and grounding specifications. Water-cooling systems require regular inspections of coolant quality and pipe tightness.

Maintenance support: ABB provides remote monitoring and diagnostic tools (such as VPN remote access) to support predictive maintenance and full lifecycle management. Regular thermal imaging inspections, vibration analysis, and software updates are recommended. ABB PM866K01 3BSE050198R1 Power Supply Module, High Performance Control System Component