The motor excited from
standstill.
14
. These
are use variety applications and
the technique has proved highly reliable for
over years.ST 3. At
rated speed, the machine automatically
synchronised the power system and the
circuit-breaker for direct connection the
supply closed. These problems can overcome
with the aid solid-state «soft» starting
equipment which for this reason being used
in increasing number applications.. MW
Maximum speed: 3600 rpm (+5 %)
Output frequency: (+5%)
Operation
The synchronous machine started with
a variable frequency the converter in
the same way converter-fed variable
speed motor (see MEGADRIVE LCI).8
Rated power: 3.MEGADRIVE-LCI.
Gas turbine starting
converter Type LCI.8 MW
Main features
• starting current limited the rated
machine current less
• provides facility for braking the machine
• sequential starting several machines
possible with single soft starter
• microprocessor control system
Technical data
Typical power range: .
Typical applications
Starting of
• gas turbines
• synchronous compensators
• refiner motors
• motor/generators pump storage
power plants
• large compressors and blowers for:
chemical processes
wind tunnels
blast furnaces
References
World-wide, ABB has installed more than
360 solid-state converters starters with
ratings between and MW.ST
Starter for synchronous machines
Starting large synchronous machine on-line
can prove problematical either because of
the inrush current because the thermal
stress hot spots the rotor surface while
running up.
