WOODWARD 8440-1706 A SPM-D11 Synchronous Phase Modulator Module

WOODWARD 8440-1706 A SPM-D11 Synchronous Phase Modulator Module

Product Overview

WOODWARD 8440-1706A SPM-D11 is the core module of Woodward's SPM (Synchronous Phase Modulator) series, serving as a key component of the automatic synchronization and load distribution control system for synchronous generators. This module is designed for parallel operation of multiple generator sets, providing precise voltage matching, frequency matching, and phase synchronization functions. It is widely used in key applications such as ship power systems, shore power systems, islanded microgrids, and industrial backup power stations.

Core technical functions

Accurate automatic synchronization

Voltage matching: Monitor the voltage between the grid connection point and the generator, with an accuracy of ± 0.5%

Frequency matching: Accurately adjust the frequency through the governor interface, with a synchronization window of ≤± 0.1Hz

Phase capture: Real time calculation of phase difference, issuing closing command when the phase difference approaches zero degrees

Adjustable parameters: Users can set synchronization parameters such as slip rate, phase angle difference, voltage difference, etc

Load allocation and frequency control

Active load distribution: Active power is proportionally distributed between multiple parallel units, with an imbalance of less than 2%

Reactive load distribution: Control reactive power distribution through a voltage regulator

Frequency droop control: supports differential/non differential adjustment modes to maintain grid frequency stability

Load request function: automatically start and stop standby units according to grid demand

Comprehensive protection function

Synchronous protection: prevents asynchronous grid connection, with advanced/delayed phase judgment

Reverse power protection: detects and prevents the generator from operating as an electric motor

Fault recording: Record key electrical parameters before and after grid connection for event analysis

Technical Specifications

Technical parameters of the project

Model 8440-1706 A SPM-D11

Power input 20-60 VDC, typical power consumption 8W

Voltage input 2 x three-phase voltage (generator side and bus side), 0-150V AC line voltage

Frequency range 45-65 Hz/55-75 Hz (switchable)

Relay output 6 x configurable relay, 5A @ 250VAC (closing, speed up, speed down and other commands)

Communication interface 2 × RS-232/485, supporting Modbus RTU protocol

Working temperature -25 ° C to+70 ° C

Humidity 0-95% relative humidity, no condensation

Certification standards include certification from major classification societies such as ABS, DNV-GL, LR, BV, etc; CE、UL、cUL

Application field

1. Ship and Ocean Engineering Power System

Parallel connection of main generator sets: automatic synchronization and load distribution of multiple marine diesel generator sets

Shaft driven generator: The main propulsion shaft driven generator operates in parallel with the auxiliary generator set

Port mode: automatic synchronous switching when connected to shore power

2. Land power stations and microgrids

Backup power station: Multiple emergency generator sets are automatically synchronized and put into operation

Island microgrid: a hybrid power system of renewable energy and diesel generator sets

Peak shaving power station: Automatically activate/deactivate units based on load demand

3. Special vehicles and mobile power stations

Large mining vehicles: dual power generation system power management

Military power supply vehicle: Multiple power supply vehicles are connected in parallel for power supply

Data center backup power supply: synchronous control of multiple UPS backup generator sets

Typical signal connection

Voltage input: three-phase voltage between the generator end and the grid bus end (via PT)

Speed control interface: Send speed increase/decrease pulse signals to the speed controller

Voltage regulating interface: sends boost/buck signals to AVR

Circuit breaker control: Output closing/opening commands to the generator circuit breaker

Communication network: Modbus network connected to the upper monitoring system

Operation and Programming

user interface

Front panel display: LED indicator lights show operating status and alarm information

Button operation: manual/automatic mode switching, parameter viewing

Programming port: Connect configuration tool through RS-232 interface

Configure software

SPM Configuration Tool: a specialized configuration software with a graphical interface

Parameter group management: can store multiple sets of parameter groups to adapt to different operating modes

Real time monitoring: online viewing of synchronization process, electrical parameters, and control status

Typical parameter settings

Typical parameter category setting range

Voltage difference 1-5% rated voltage

Frequency difference 0.05-0.3 Hz

Phase angle difference of 5-20 degrees

Closing advance 10-100 ms (depending on the closing time of the circuit breaker)

Synchronization check time 1-30 seconds

Ordering Information and Compatibility

Complete model analysis

8440-1706: Basic models of SPM-D series

A: Hardware version or revision level

SPM-D11: Function configuration code, D11 represents standard synchronization and load distribution function

Compatible devices

Speed controller: compatible with mainstream speed controllers such as Woodward 2301A, 2301D, 723 series, etc

Voltage regulator: compatible with Woodward SPM-A, HCG/HCR series regulators

Circuit breaker: compatible with mainstream circuit breakers such as ABB, Siemens, Schneider, etc

Optional accessories

Installation kit: DIN rail mounting bracket, connector kit

Communication Expansion: Modbus TCP Gateway, Ethernet Conversion Module

Display module: Remote status indicator panel