Description
- Product Model: IS215WEPAH2B
- Manufacturer: GE
- System Platform: Mark VIe Wind Turbine Control
- Power Supply Voltage: 24 V DC nominal, operating range 18–32 V DC
- Power Consumption: Approximately 20–30 W under full load conditions
- Communication Interfaces: Multiple serial ports (COM1, COM2, and micro-miniature 9-pin D connector), plus Ethernet 10BaseT/AUI for network integration
- Control Capability: Pitch axis command processing and feedback handling for motor drives and position sensors
- Conformal Coating: Yes, applied for environmental ruggedness in nacelle/hub mounting
- Operating Temperature Range: -40°C to +70°C (extended rating for wind hub environments)
- Humidity Tolerance: 10% to 95% non-condensing
- Vibration Resistance: Compliant with wind turbine standards (IEC 60068 equivalent) for rotating hub service
- Dimensions: Standard compact PCB assembly, approximately 200–260 mm × 160–200 mm × 40–60 mm (approximate)
- Weight: Approximately 1.0–1.5 kg
- Certification Standards: Compliant with IEC 61400 wind turbine series, CE marked, EMC compliant for renewable applications
- MTBF: > 180,000 hours (estimated under typical wind operating profiles)
- Isolation: Galvanic isolation on communication and control paths for enhanced noise immunity
Technical Architecture & Functional Positioning
The IS215WEPAH2B is positioned as a pitch axis processing and interface module in the Mark VIe wind turbine control structure, typically installed in the hub or pitch drive cabinet for each blade. It receives pitch setpoints from the central controller and executes localized control loops for blade angle adjustment, interfacing with pitch motors, position feedback devices, and backup power elements. Unlike CANbus-dependent variants, this model uses serial and Ethernet-based communication for deterministic command and status exchange, optimizing cost for systems where distributed CAN networking is not required.
The architecture includes robust serial ports for drive communication, Ethernet for supervisory integration, and integrated processing for closed-loop pitch positioning, fault monitoring, and emergency feather execution. It supports rapid response to high-wind or overspeed conditions by prioritizing safety commands, while incorporating diagnostics for motor health, position accuracy, and power integrity. The design emphasizes modularity, allowing independent axis operation to maintain partial turbine functionality during single-axis faults.
Engineering benefits include simplified wiring compared to full CANbus setups, reduced complexity in retrofits, and reliable performance in harsh hub environments through conformal coating and wide temperature tolerance. This contributes to improved load mitigation, extended blade life via precise pitch control, and compliance with grid requirements for active power regulation and fault ride-through. The module’s compatibility with Mark VIe enables seamless upgrades from legacy pitch systems, supporting higher availability in onshore and offshore wind operations.
Typical Application Scenarios
- Installed in GE wind turbines for pitch axis drive control, enabling accurate blade angle positioning for power optimization and aerodynamic efficiency.
- Used in DFIG-based wind fleets for emergency pitch feathering during grid disturbances, high winds, or overspeed to safeguard rotor and drivetrain integrity.
- Serves as a cost-effective replacement or upgrade in pitch systems not requiring CANbus, preserving existing interfaces while adding updated features.
- Supports wind farm retrofits focused on pitch reliability enhancements and reduced maintenance intervals in variable wind conditions.
- Applied in utility-scale projects needing IEC 61400-compliant pitch response for grid stability and energy yield maximization.
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