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BHOS Tezisler 2022 17x24sm

THE 3
rd
 INTERNATIONAL SCIENTIFIC CONFERENCES OF STUDENTS AND YOUNG RESEARCHERS 
dedicated to the 99
th
anniversary of the National Leader of Azerbaijan Heydar Aliyev
250
DESIGN OF FLOW CONTROL LOOP BY VARIABLE 
FREQUENCY DRIVE AT BHOS EMERSON TEST RIG 
Christopher Obekpa 
Baku Higher Oil School 
Baku, Azerbaijan 
Email: Christopher.obekpa@bhos.edu.az 
Supervisor: Ph.D, Associate Professor Erkin Ibragimov 
Key words/phrases: 
Mass flowmeter, Control loop, PID controller, Control valve & 
actuator, Variable frequency drive (VFD). 
Flow measurement is one of the most important aspect of any industrial 
or manufacturing process. We can simply say it is the measuring of fluid in 
plants or industry. Flow can be measured through a variety of different 
devices such as Coriolis, differential pressure, vortex, magnetic, ultrasonic, 
turbine, and positive displacement meters. Some of the common reasons for 
flow measurement are Custody transfer, Product integrity, Efficiency, 
Process variable control and above all, Safety. 
In perfectly implementing this process, an ideal flow control loop was 
created by me and with the help of a flowmeter, control valve and actuator, 
PID controller, and variable frequency drive (VFD). After the successfully 
installation of the BHOS Emerson test rig, I configured my control system 
with the help of the already installed control studio software (Delta V). In other 
to manage the energy usage, I employed the help of a VFD which was also 
part of the test rig. With the VFD, I varied the frequency and voltage of the 
power supply to the motor. This in return helped me to effectively manage 
cost and increase the energy efficiency of the control system.
I decided to use Mass flowmeter in this project instead of other types due 
to its high precision. Whenever a precise flow rate measurement must be 
made, it is advice to use mass flowmeter. Mass flow measurement gave me 
the actual weight of the liquid that was being transported per unit of the time 
(e.g. pounds per hour, kilogram per second etc.). Immediately the process 
started, the mass flowmeter measured the amount of fluid going through the 
channel at the time and transmitted or sent the data to the PI controller (this 
helped me to eliminate the offset) which in return compared it to the set point 
of the control loop and makes sure it does not exceed the set point.
At the end of the project and perfect implementation of the process, I 
was able to achieve the goal of establishing by configuring the control loop 
and also ensuring the flow set point tracking. Furthermore, I created some 
output documents such as I/O list, BOM, C & E diagram, electrical diagrams, 
interconnection diagram, instrument index, P &ID, and laboratory work 
instructions (for future undergraduate students in the department). 



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