Woodward 5501-365 Electronic Governor

Speed and Load Monitoring: Reads frequency signals from reluctance sensors (e.g., engine flywheel tooth pulse) in real time, compares them with set values (e.g., rotational speed corresponding to 50Hz grid frequency) to generate deviations.

External Command Reception: Receives load commands from DCS systems (e.g., power distribution signals during paralleling) or manual setpoints.

PID + Feedforward Control: Built-in adaptive PID algorithm (proportional, integral, derivative parameters customizable), combined with feedforward compensation to predict sudden load changes (e.g., increasing fuel supply in advance when load surges) to reduce overshoot.

Dynamic Parameter Optimization: Supports automatic adjustment of control parameters based on engine types (e.g., high-speed diesel engines/gas turbines) to enhance adaptability.

Output Drive: Drives fuel actuators (e.g., Woodward 8273-1011) via 4-20mA signals to adjust fuel valve openings and change fuel flow.

Real-time Feedback: Monitors actuator position through LVDT displacement sensors or potentiometers to form a closed-loop control, ensuring regulation accuracy (error ≤±0.5%).

Multiple Protections: Built-in overspeed protection (triggers shutdown when exceeding 115% of rated speed), undervoltage protection, and sensor disconnection detection.

Fault Self-Diagnosis: Outputs fault codes via LED indicators or communication interfaces (e.g., "E01" for speed sensor abnormality) for easy maintenance.

Speed control for diesel/gas turbine generator sets (maintaining grid frequency stability), supporting load distribution during parallel operation of multiple units (e.g., power plant peak shaving, emergency power supply).

As a governor for backup power engines in photovoltaic/wind power complementary systems, ensuring no frequency fluctuation during switching.

Speed control for engines driving oil pumps and natural gas compressors, adapting to pipeline pressure changes (e.g., booster stations in long-distance pipelines).

Stable control of generator sets in oilfield well sites, resisting load fluctuations from oil pumps.

Speed control systems for marine main engines (diesel engines), resisting wave impacts and propeller load changes (e.g., sudden headwind during full-speed navigation).

Frequency stability control for offshore platform power stations, supporting parallel operation of multiple units.

Speed regulation for engine-driven fans and pumps (e.g., constant pressure water supply systems), adjusting speed according to process requirements (e.g., variable frequency control of boiler induced draft fans).

High-precision Control: ±0.1% speed regulation accuracy, superior to traditional mechanical governors (±1%) and most similar electronic governors (±0.5%), suitable for grid-level frequency modulation scenarios.

Intelligent Integration: Supports industrial communication protocols like Modbus/TCP, enabling integration into industrial internet platforms for remote monitoring and parameter optimization (e.g., via Woodward ProAct software).

Adaptive Capability: Built-in multiple engine models (e.g., Cummins, Caterpillar), adapting to different models without complex debugging, reducing engineering commissioning time.

High Reliability: Industrial-grade components (MTBF ≥80,000 hours), vibration-resistant and electromagnetic interference-resistant design, suitable for harsh environments like offshore platforms and mines.

Convenient Maintenance: Supports online parameter modification and fault code display; some models allow hot-swapping, reducing downtime maintenance costs.

Controller + Actuator Combination: 5501-365 paired with Woodward 8273-1011 actuator forms a "signal processing-mechanical execution" closed-loop system, widely used in 100kW-5MW generator sets.

Redundancy Design: In critical scenarios (e.g., nuclear power plant backup power), dual-machine hot standby (automatic switching between primary and backup 5501-365) can be configured to enhance system reliability.