Basler Electric DECS-150 Digital Excitation Control System

Overview

The DECS-150 Digital Excitation Control System is a high powered, low-cost,

and environmentally rugged solution for controlling the output of rotary

excited synchronous generators. The DECS-150 is perfect for machines that

are paralleled to other generators and/or the utility system. It is ideal for

distributed generation, cogeneration, and peak shaving applications.

Features

• Microprocessor based

• 0.25% voltage regulation accuracy

• 0.5% accuracy up to 40% Total Harmonic Distortion (THD)

(harmonics associated with six-thyristor load)

• 63 Vdc and 125 Vdc @ 10 Adc pulse-width-modulated (PWM) output

• Capable of 10 Adc continuous field current output when system

temperature is 55°C (131°F) or below

• Load Sharing over Ethernet

• Auto tuning feature with two PID stability groups

• Var/PF control

• Exciter Diode Monitor (EDM)

• Overexcitation limiting

• Underexcitation limiting

• Stator current limiting

• Voltage matching

• Manual mode (field current regulation)

• Paralleling input from 1-amp or 5-amp CT secondaries

• Nominal sensing inputs of 120. 240. 480. and 600 Vac

• Power input from 50/60 Hz shunt connection or permanent magnet

generator (PMG) operating at 50 to 500 Hz

• Integrated protection functions including Loss of Sensing and Transfer

to Manual

• LED annunciation of operating conditions

• Ethernet communications with Modbus® TCP

• Set up via PC using BESTCOMSPlus® software (included)

• Customizable logic in BESTlogic™Plus

• IP54 rating when rear-mounted USB option is selected

Benefits

• Microprocessor-based design provides high functionality and

performance.

• Powerful 7-amp, PWM power stage provides high field forcing for

increased system response.

• THD-tolerant design offers reliable operation with nonlinear loads.

• Integrated generator and exciter protection ensure proper system

operation.

• Rugged, potted design for exceptional reliability in the harshest

environments.

• Auto tuning allows for easier commissioning, saving time and

money.

• External Autotracking provides redundancy and more reliable

system design.

• Grid code settings provide compatibility with grid code compliant

systems.