Description

Woodward  9907-005  Main synchronizer load control module

Core function
Synchronous control
Precisely match the voltages, frequencies and phases of multiple generators to ensure no inrush current when connected to the grid.
Support the automatic synchronization function to quickly detect and adjust the generator parameters to the grid connection conditions.
Comply with international synchronization standards such as IEEE 1547 to ensure grid compatibility.
Load distribution
Allocate active and reactive loads proportionally based on the capacity of the generator set to avoid overloading or underloading.
Supports Droop (differential) and Isochronous (non-differential) control modes to adapt to different application scenarios.
Dynamically respond to load changes and maintain the stability of system frequency (typical regulation time < 200ms).

Protection and Monitoring
It is equipped with built-in protection functions such as overvoltage, undervoltage, overfrequency, low frequency and reverse power, and will automatically disconnect in case of a fault.
It can monitor parameters such as voltage, current, frequency and power factor in real time, and support data recording and analysis.
It provides an alarm output interface and can be connected to a remote monitoring system.
Communication and Expansion
Support industrial protocols such as Modbus RTU/TCP and Profibus to achieve remote control and data exchange.
It can be networked with other controllers through the Woodward Digital Communication Network (DCN) to form a distributed control system.
Each bus supports up to 64 nodes at most, with a maximum truncated line length of 300mm, meeting the requirements of complex systems.
Technical parameters
Power supply: 18-32Vdc, power consumption approximately 14W
Current transformer (CT) : Rated input of 5A, supporting the range of 0.5-5A

Operating temperature: -40°C to + 85°C (storage), -20°C to + 70°C (operation)
Humidity: 5%-95% RH (no condensation)
Isolation withstand voltage: 1000Vrms (0-60Hz)
Dimensions: Approximately 170mm × 110mm × 70mm
Weight: Approximately 1.2kg

Application scenarios
Distributed generation system: Multiple diesel/gas generator sets operate in parallel, such as backup power sources for hospitals and data centers.
Microgrid: Coordinating renewable energy sources (such as wind power and photovoltaic power) with traditional generators to achieve stable power supply.
Ship power system: Controls the synchronization and load distribution of the ship’s main generator to ensure navigation safety.
Industrial self-owned power plants: multi-unit coordinated power supply for large industrial enterprises such as steel mills and cement plants.

Characteristics and Advantages
High-precision control
The frequency regulation accuracy reaches ±0.01Hz, and the voltage regulation accuracy is ±0.5%, ensuring the power quality.
Supports dual PID control algorithm, taking into account both stability and dynamic response.
Flexible configuration
Parameters can be configured locally through the front panel LCD and buttons, or set remotely via software.
It is equipped with multiple preset parameter groups to adapt to the characteristics of different types of generators and loads.
Reliability design
Fully sealed metal casing, resistant to vibration (10-500Hz, 1g) and shock (10g).
Redundant power input design, supporting hot-swapping maintenance.
Security certification
It complies with international certifications such as CE, UL, and CSA, and meets the requirements of industrial-grade applications.
Fail-safe design, automatically triggering protection actions in case of power failure.

Typical configuration
Single-machine operation: As an independent governor, it controls the speed and output voltage of a single generator.
Multi-generator parallel connection: In conjunction with actuators such as Woodward 2301A, it achieves load balancing among multiple generators.
Grid-connected operation: Synchronized with the power grid, supporting base load, waist load or peak shaving operation modes