What is LCI gas turbine?
Load Commutated Inverter (LCI) is a system with an input thyristor bridge and an output thyristor bridge. The input bridge is naturally commutated by the AC supply and supplies DC current with harmonics into a large inductor.
What does an LCI do?
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 in excess of 70,000 HP. Multi-channel output gives low harmonics on the motor and gives the opportunity for single channel operation.
What is load commutation in inverter?
Commutation in an inverter is the turning off of one of the electronic switching devices prior to turning on the next. It is important to commutate properly because failure can lead to a short circuit when the next device is turned on.
What is static frequency converter in a gas turbine?
Static frequency Converter (SFC). Function of SFC is to change the generator into the motor at start up process. This will rotate gas turbine for combustion. After combustion, gas turbine can turn generator then it SFC auto stop at 2000 rpm.
When can a synchronous motor be load commutated?
When can the synchronous motor be load commutated? When the synchronous motor operates at a leading power factor thyristors of load side converter can be commutated by the motor induced voltages same way as the thyristors of a line commutated converter are commutated by line voltages.
What is BMW LCI facelift?
LCI stands for Life Cycle Impulse or, in more basic terms, mid life cycle refresh.
What is load commutated Cycloconverter?
A cycloconverter is a naturally commutated converter in which the output frequency and voltage can be controlled independently and continuously. It consists of back to back connected controlled rectifiers whose output voltage and frequency can be controlled by tuning firing angles of rectifiers.
How does SFC is work in gas turbine?
Function of SFC is to change the generator into the motor at start up process. This will rotate gas turbine for combustion. After combustion, gas turbine can turn generator then it SFC auto stop at 2000 rpm. Then gas turbine turn a generator up to rated speed at 3000 rpm.
What is SFC see?
Equipment (SFC/SEE) Course Description: Interactive training with hands-on exercises focusing on control software, operations and trouble shooting.
Can we control speed of synchronous motor?
We can control the speed of the synchronous motor by changing the frequency of the supply to the motor.