Product Short Description
Product Introduction
Built on advanced microprocessor and IGBT semiconductor technology, this module delivers accurate field current regulation to maintain stable generator output voltage across all load conditions. It integrates complete control, protection, communication, and monitoring functions in a single unit, fully certified to DNV, UL, CE, and RoHS standards for deployment in demanding industrial, marine, and power generation environments.
Description
Technical Specifications
| Parameter | Detail |
|---|---|
| Product Type | Indirect Excitation System / Automatic Voltage Regulator (AVR) |
| Continuous Excitation Current | 10 A DC |
| Excitation Voltage Output | 0 – 200 V DC (continuous) |
| Control Accuracy | ±0.5% (steady-state); ±5% (dynamic) |
| Response Time | ≤ 10 ms (for 20% step change) |
| Supply Voltage | 100 – 240 V AC (±10%) |
| Control Modes | Automatic Voltage Regulation (AVR), Manual Excitation Current Control, Constant Reactive Power (Var) Regulation, Constant Power Factor (PF) Regulation |
| Communication Interfaces | 100 Mbps Ethernet, USB 2.0, RS-485 |
| Communication Protocols | Modbus TCP, Profibus DP |
| Operating Temperature | -25 °C to +70 °C |
| Humidity | 5% – 95% RH (non-condensing) |
| Dimensions | 150 mm (W) × 100 mm (H) × 50 mm (D) |
| Weight | 1.5 kg |
| Protection Class | IP20 (IP67 for special versions) |
| Certifications | CE, UL, DNV, RoHS |
| Cooling | Natural convection (vertical mounting required) |
Key Functional Features
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High-Precision Voltage Regulation
Employs a high-performance DSP controller and advanced control algorithms to achieve exceptional voltage stability. The module continuously monitors generator terminal voltage and rapidly adjusts the excitation current with ±0.5% steady-state accuracy, ensuring compliance with strict power quality standards under varying loads.
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Integrated IGBT Power Stage
Features a built-in, high-efficiency IGBT converter stage for direct excitation current control. This design provides fast switching, low power loss (up to 98% efficiency), and high reliability, eliminating the need for external power components and simplifying system design.
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Multi-Mode Control Flexibility
Supports four primary control modes: Automatic Voltage Regulation (AVR), Manual Excitation Control, Constant Reactive Power (Var), and Constant Power Factor (PF). Seamless, bumpless transfer between modes ensures stable operation during grid changes, islanding, or paralleling operations.
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Comprehensive Generator Protection
Incorporates a full suite of built-in protection functions: over-voltage, under-voltage, over-excitation, under-excitation (loss-of-field), over-temperature, and short-circuit protection. It also monitors the integrity of rotating diodes, providing early fault detection to prevent catastrophic generator failure.
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Advanced Communication & Diagnostics
Equipped with Ethernet (Modbus TCP), RS-485, and USB interfaces for seamless integration with SCADA systems, PLCs, and HMIs. Offers real-time performance monitoring, fault logging, and remote configuration. Built-in diagnostics simplify troubleshooting and reduce maintenance downtime.
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Redundancy & Parallel Operation Support
Designed for dual-channel redundant configurations to maximize system availability. It includes dedicated functions for accurate load sharing and synchronization when operating multiple generators in parallel, making it ideal for critical standby or prime power applications.
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Industrial-Grade Robustness
Features a compact, rugged mechanical design with a wide operating temperature range and high immunity to electrical noise (EMC compliant). Conformal coating on the PCB provides resistance to dust, humidity, and corrosive atmospheres, ensuring reliable performance in harsh industrial and offshore environments.
Application Scenarios
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Small & Medium-Sized Power Plants
Core control component for thermal, hydro, and diesel generator sets (typically from 100 kVA to 10 MVA). Maintains stable grid voltage, supports automatic grid synchronization, and ensures efficient power export to the utility grid.
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Marine & Offshore Power Systems
Certified for marine applications (DNV), it controls synchronous generators on commercial vessels, offshore platforms, and drilling rigs. Provides stable power for propulsion, auxiliary machinery, and critical systems in saltwater, high-vibration environments.
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Industrial Cogeneration & CHP Plants
Deployed in combined heat and power (CHP) systems within manufacturing facilities, hospitals, and commercial buildings. Regulates voltage and optimizes reactive power flow to maximize energy efficiency and ensure reliable on-site power generation.
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Mobile & Portable Generator Sets
Ideal for ruggedized, mobile power units used in construction, mining, and emergency rescue operations. Its compact size, low weight, and robust design deliver stable power in remote and variable working conditions.
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Renewable Energy Hybrid Systems
Used in microgrids combining solar/wind power with diesel gen-sets. Provides stable voltage and frequency regulation, enabling smooth integration and load balancing between renewable energy sources and conventional backup generation.
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Industrial Synchronous Motor Drives
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