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PVD164A2059 3BHE014340R2059 excitation
processor module is a high-performance synchronous motor excitation control unit specifically designed for the AC 800PEC (Process and Electrical Control) system. It is widely used in the excitation systems of synchronous motors (such as generators and large-scale motors) in fields including thermal power generation, hydropower generation, and industrial drives.
Serving as the "control brain" of the excitation system, this module integrates high-precision excitation regulation algorithms, real-time data processing, and multi-system collaboration functions. It can achieve precise control of the excitation current and voltage of synchronous motors, ensuring the stable operation of the motor under working conditions such as startup, load fluctuation, and power grid disturbance. Meanwhile, it optimizes the motor's power factor and energy efficiency.
- High-precision excitation regulation: Equipped with a dedicated excitation control processor, it achieves an excitation current regulation accuracy of ±0.5% FS and a voltage regulation accuracy of ±0.2% FS, with a response time of less than 10ms. This meets the strict requirements for excitation stability of synchronous motors (e.g., as specified in GB/T 7409.3-2007 Synchronous Motor Excitation Systems - Part 3: Technical Requirements for Excitation Systems of Large and Medium-sized Synchronous Generators).
- Multi-mode excitation control algorithms: Built-in with multiple excitation control modes to adapt to different application scenarios:
- Constant excitation current control: Suitable for the motor startup and field-weakening speed regulation stages.
- Constant excitation voltage control: Ensures the stability of the generator terminal voltage to meet power grid voltage requirements.
- Constant power factor control: Optimizes motor energy efficiency and reduces reactive power loss.
- Power grid voltage tracking control: Adapts to power grid voltage fluctuations and enables impact-free grid connection.
- Strong dynamic response capability: Supports 5kHz high-speed current loop sampling and regulation, quickly suppressing disturbances such as sudden load changes and power grid voltage sags (LVRT). The dynamic response time of the excitation system is less than 20ms, preventing motor loss of synchronization.
- Excitation limitation and protection logic: Built-in with limiting functions for maximum excitation current, maximum excitation voltage, and excitation winding over-temperature. Combined with over-excitation and under-excitation protection logic, it prevents damage to the synchronous motor due to excitation system overload.
- AC 800PEC system redundancy compatibility: Supports 1+1 hot redundancy configuration (module redundancy, power supply redundancy, communication redundancy) with a redundancy switchover time of less than 30ms. It meets the "zero downtime" operation requirement of the AC 800PEC system, with a Mean Time Between Failures (MTBF) of more than 1,000,000 hours (under 40℃ working conditions).
- Wide temperature range and environmental adaptability: Adopts military-grade components that can operate within a temperature range of -40℃ to +85℃. The PCB board is coated with a three-proof (moisture-proof, salt-fog-proof, mildew-proof) paint (complying with IPC-CC-830 Class B standards), enabling it to adapt to high-temperature and high-humidity scenarios such as power plants and metallurgical factories.
- Strong Electromagnetic Compatibility (EMC) performance: Has passed EN 61000-6-2 (Immunity for Industrial Environments) and EN 61800-3 (EMC Requirements for Power Drive Systems) tests. It maintains stable signals without misoperation in strong electromagnetic interference environments such as high-voltage switch operations and motor startups.
- Hardware-level fault protection: Built-in with overcurrent protection for the excitation circuit (response time < 1μs), overvoltage protection for the excitation power supply (36V DC threshold), and over-temperature protection for the module (automatic load reduction when temperature exceeds 75℃). This prevents fault propagation to the AC 800PEC main system or the synchronous motor.
- Seamless system integration: Enables high-speed data interaction (transmission rate of 100Mbps) via the dedicated backplane bus of the AC 800PEC system. It automatically identifies system configurations (e.g., motor parameters, excitation power unit specifications) without the need for manual hardware adaptation, shortening the integration cycle by 30%.
- Grid-level communication interfaces:
- 2 industrial Ethernet ports (10/100Mbps): Support Modbus TCP/IP and IEC 61850 protocols, enabling connection with the power plant DCS and power grid dispatching systems to upload excitation system operation data and fault information.
- 1 Profibus DP port: Used for connecting excitation power units (e.g., thyristor rectifier bridges) and current/voltage sensors.
- 1 IRIG-B code interface: Achieves a time synchronization accuracy of ±1μs, meeting the requirements for Sequence of Events (SOE) recording in power systems.
- Data recording and diagnosis: Built-in with 64MB data storage, which can record key operation data of the excitation system for more than 1 year (with a sampling interval of 10ms). It supports waveform recording for 10 seconds before and 5 seconds after a fault, facilitating accident tracing and excitation system performance analysis. Additionally, it is equipped with a self-diagnosis function that can real-time monitor the module hardware status and communication link integrity, and send early warning signals to the AC 800PEC main controller.
- Intuitive status monitoring: The front panel of the module is equipped with 16 LED indicators, which real-time display information such as power status, redundancy switchover, excitation mode, and fault alarms (e.g., overcurrent, overvoltage, communication interruption). On-site personnel can quickly determine the operation status.
- Dedicated commissioning tools: Compatible with ABB Control Builder M (V5.2 and above) and AC 800PEC Engineer software. It supports online parameter configuration (e.g., excitation regulation PID parameters, protection thresholds), variable monitoring, and logic simulation. Commissioning can be conducted without disassembling the module, reducing downtime.
- Standardized installation design: Its dimensions are adapted to the 3U rack of the AC 800PEC system (160mm in width × 100mm in height × 220mm in depth). It adopts a snap-on quick installation method and is compatible with 19-inch standard control cabinets, saving installation space. It supports hot swapping (subject to AC 800PEC system authorization), allowing maintenance without interrupting the entire excitation system.
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