DEIF DLQ144-PC-NB Advanced Wind Turbine Controller-DLQ144-PC-NB-Zhangzhou Fengyun Electrical Equipment Co., Ltd.

It supports independent pitch control of three blades to achieve power regulation and load optimization. It has been successfully applied to the CRRC 1500kW doubly fed wind turbine system. Based on real-time wind speed and turbulence data, it dynamically adjusts the generator torque and pitch angle to improve AEP (annual power generation) by more than 2%. It has 200+ built-in operating status monitoring points and can automatically identify abnormalities such as sensor failure, communication interruption, and over-temperature and trigger a safe shutdown.

Description

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　　The DEIF DLQ144-PC-NB is a modular, highly reliable wind turbine main controller developed by DEIF A/S of Denmark. It is specifically designed for large onshore and offshore wind farms and is suitable for full-function monitoring, control, and protection of wind turbines of 2MW and above. Its core positioning is as an industrial-grade wind power control hub, supporting open programming and redundant architecture, and meeting international standards such as IEC 61400-1 and IEC 61131-3.

　　System Functions and Roles

　　Core Responsibilities: As the main controller of the wind turbine pitch control system, it is responsible for:

　　Real-time communication with the wind turbine main controller;

　　Controlling the integrated motor driver (IMD) to perform blade angle adjustment;

　　Monitoring and integrating safety chain signals, including:

　　Internal/external 24VDC power failure;

　　Software thread timeout;

　　Hardware failure;

　　Program download interruption.

　　Safety Mechanism: When any of the above faults is triggered, the system immediately executes emergency pitch retraction (91° limit) to ensure safe shutdown of the wind turbine.

　　Module Architecture: Adopting a distributed I/O and fieldbus design, supporting flexible expansion, it includes:

　　PCM 4-3 main CPU module;

　　TCM-2 thyristor control module;

　　Grid Protection Module;

　　Distributed I/O module.

　　Core Technical Parameters

　　Parameter Category and Specifications

　　Protection Rating: IP65 (Plastic housing conforms to UL94-V0, steel panel)

　　Operating Temperature: -30°C to +60°C (Suitable for extreme climates)

　　Storage Temperature: -40°C to +85°C

　　Power Input: 24V DC ±20%, supports redundant dual power input

　　Communication Protocol: CANopen, Modbus RTU/TCP, Ethernet/IP, IEC 61850 (optional)

　　Programming Language: ANSI C/C++, IEC 61131-3 (ST, FBD, LD)

　　Redundancy Design: Supports dual CPU hot standby, dual power supply, and dual network redundancy

　　Core Functional Features

　　Pitch Control: Supports independent pitch control for three blades, enabling power regulation and load optimization. Successfully applied to the CRRC 1500kW doubly-fed wind turbine system.

　　Power Optimization: Based on real-time wind speed and turbulence data, dynamically adjust generator torque and pitch angle to improve AEP (Annual Power Efficiency) by over 2%.

　　Remote Diagnostics: Supports remote data acquisition, fault code uploading, and online software upgrades via the DEIF Cloud platform.

　　Self-Diagnosis: Built-in monitoring points for over 200 operating statuses automatically identify sensor failures, communication interruptions, overheating, and other anomalies, triggering a safety shutdown.

　　Open Ecosystem: Provides SDK and API interfaces, supporting third-party algorithm integration (such as machine learning yaw optimization models).

　　System Architecture and Module Composition:

　　The DLQ144-PC-NB adopts a modular design, consisting of the following core units:

　　Base Unit: Provides system clock, power management, and communication backbone, supporting hot-swapping.

　　Power and Control Module (PCM 4-3): The main CPU unit, running real-time control programs, integrating multiple protocol interfaces such as Ethernet, CAN, and RS485.

　　Input/Output Module (IOM 4.2): Supports 4 analog inputs (±20mA / ±10V), 4 analog outputs, 12 digital inputs (PNP/NPN), and 4 frequency inputs, meeting the full interface requirements of sensors and actuators.

　　Grid Protection Module (GPM): Implements grid-connected safety functions such as low-voltage ride-through (LVRT), frequency protection, and islanding detection.

　　Serial Synchronization Interface (SSI): Used for high-precision encoder data acquisition, supporting closed-loop control of pitch systems.

　　Application Scenarios:

　　Compatible with mainstream wind turbine manufacturers: Controller replacement and upgrades for models from Enercon, Suzlon, Vestas, Goldwind, etc.

　　Applicable Environments: Onshore wind farms, offshore wind power, and floating platforms.

　　Typical Applications: Wind turbine main control, pitch systems, yaw control, grid synchronization, energy management, and remote operation and maintenance.

　　Reliability Guarantee: Possesses extremely strong durability and provides a 5-year warranty. Open Programming Capabilities: Supports ANSI C/C++ and IEC61131-3 standards, and can be used with Linux and MATLAB/Simulink for secondary development.

　　Distributed Architecture: Can be deployed near sensors and transmitters, significantly reducing wiring costs, installation errors, and manual labor time, maximizing system reliability while controlling costs.

　　Customized Adaptation: Leveraging DEIF's decades of experience in wind power control technology, customized pitch and main control solutions can be developed for different turbine models to optimize wind turbine operating efficiency.

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