The TM GE LCI drive is ideal for any high- power synchronous motor application for which adjustable speed operation or soft starting is needed. Adjustable speed operation allows optimal efficiency (energy saving) and improved process accuracy.
Typical adjustable speed applications include:
Compressors for air or petrochemical processes
ID fans for coal-fired boilers
Grinding mills
Rod and bar mills
Marine propulsion
Soft starting reduces the mechanical stress on the motor and driven equipment as well as eliminating electrical starting surges on the AC power system. The rating of the starting system depends on the power required to drive the load at synchronous speed.
An output transformer permits the LCI drive to operate with any motor voltage. The TM GE LCI drive has a closed transition for its synchronizing/de-synchronizing function which, means no other synchronizing equipment is needed to smoothly start multiple large motors.
TM GE LCI (2.3 or 4.2 kV) Features and Benefits
Design Feature
Customer Benefit
N+1 Power Bridge
Each phase-leg in the power bridge includes an extra (N+1) thyristor, providing device redundancy. Additionally, the thyristors are full voltage rated
Uninterrupted Operation through a Device Failure
The N+1 thyristor form of redundancy ensures full power output in the event of a device failure
Highest System Efficiency
Synchronous motor and LCI combination give highest efficiency drive system available
Most Cost-Effective High HP System
Extensive cost savings in energy costs throughout the life of the equipment
Input Configuration Options
Drive can be configured for 6, 12 or 24 pulse input
Power System Friendly
With these converter topology options, the harmonics reflected back into the power system can be minimized
Water-Cooled Technology
The power bridge features a standard fully redundant water cooling system. Additionally, in the rare case that maintenance is required, the hoses do not need to be disconnected
Compact Quiet Design
Water Cooling technology has several advantages over other options:
Reduces ambient noise
Reduces footprint of drive, saving valuable floor space
Allows remote mounting of the transformer (outdoors)
Windows®-Based Configuration
and Maintenance Tools The PC-based Control System Toolbox features:
Animated function block diagrams
Integrated trend window
Ethernet interface for remote connectivity
Faster Commissioning and Maintenance
These world-class tools drive productivity in commissioning and maintenance activities
