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DS5201A2U1 - Load-Commutated Inverter is available in stock which ships the same day.
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SPECIFICATIONS:
Part Number: DS5201A2U1
Manufacturer: General Electric
Series: Mark IV
Product Type: Load-Commutated Inverter
Digital Inputs: 8 inputs, 120VAC
Input Voltage: 24 V dc
Operating temperature: -35 to 65 °C
Size: 8.24 cm high x 4.16 cm
Repair: 3-7 Day
Availability: In Stock
Weight: 2 lbs
Country of Origin: United States
FUNCTIONAL DESCRIPTION:
DS5201A2U1 is a Load-Commutated Inverter manufactured and designed by General Electric as part of the Mark IV Series used in GE Speedtronic Gas Turbine Control Systems. The LCI operation is simple and reliable. It uses load-commutated, phase-controlled power thyristor technology to supply power to the stator windings of a high-efficiency synchronous motor. The power circuit has a source converter, connected to the power supply and a load converter connected to the motor. When motoring, power flows from the power source to the motor. Regeneration is built in, allowing smooth control of loads in all operations. The LCI controls the motor torque to regulate motor speed. Motor torque is controlled through the DC link current. The LCI power converter blocks can be paralleled to deliver ratings over 70,000 HP. The multi-channel output gives low harmonics on the motor and allows single-channel operation. Consult TMEIC General Industries for custom systems to meet your requirements.
FUNCTIONS OF LOAD COMMUTATED INVERTER:
The Load Commutated Inverter (LCI) system includes an input and an output thyristor bridge. The input bridge, naturally commutated by the AC supply, delivers DC with harmonics into a large inductor. The output bridge facilitates low-speed operation by activating a pair of thyristors to direct DC into the generator's stator, initiating rotation. As the generator rotates, the active thyristors are switched off, and another pair is activated to sustain the rotation.
The system experiences notable output torque pulsations and intricate AC supply harmonics, requiring various circuit configurations. For power station applications, three-phase segregated bus bars, along with specialized protection and isolation, are typically necessary for the output. The DC midpoint voltage fluctuates with generator speed, while the AC power factor ranges from low to high.
WOC has the largest stock of OEM Replacement Parts for GE Speedtronic Gas Turbine Control Systems. We can also repair your faulty boards and supply unused and rebuilt boards backed up with a warranty. Our team of experts is available round the clock to support your OEM needs. Our team of experts at WOC is happy to assist you with any of your automation requirements. For pricing and availability on parts and repairs, kindly contact our team by phone or email.
What is a Load Commutated Inverter (LCI)?
An LCI is a system that converts AC power to DC and then back to AC using thyristor bridges. It is commonly used in high-power applications, such as driving synchronous motors and generators.
How does the LCI input bridge work?
The input bridge is naturally commutated by the AC supply and delivers DC with harmonic components into a large inductor.
What is the function of the LCI output bridge?
The output bridge controls the DC flow into the generator's stator at low speeds. By switching pairs of thyristors, it maintains generator rotation.
What challenges are associated with LCIs?
LCIs are known for significant torque pulsations, complex AC supply harmonics, and the need for special protection and isolation measures, particularly in power station applications.
