DESIGN, SIMULATION AND IMPLEMENTATION MONITORING SYSTEM FOR SYSTEM CONTROL C4 FEEDING PUMP FOR FEED VAPORIZATION IN THE BUTADIENE PLANT

Author(s):  
Fahmi Yunistyawan ◽  
Yunistyawan J Berchmans ◽  
Gembong Baskoro

This study implements the auto start control system on an electric motor 3 phase C4Feeding pump when the discharge pressure is low-low (4.3 kg /cm²). The C4 feeding pumpmotor was initially manually operated from the local control station, this was very ineffectiveand inefficient because it still relied on the field operator to operate the pump motor and whenthe plant was in normal operating it is very risk if the field operator late to operate motor then itwill impact to quality of the product, and if the delay time to operate motor is too long then planthave to shut down, therefore improvement is needed in the C4 feeding pump motor controlsystem. In this paper, various types of 3-phase motor control are explained which allow it to beapplied to the C4 feeding pump motor that are on-off, inverter, and variable speed drive andefficient selection of the three systems control of the motor. Software and hardware used in thisthesis work are DCS CENTUM VP Yokogawa.

Author(s):  
Safwan Nadweh ◽  
Zeina Barakat ◽  
Ghassan Hayek

This chapter introduces EMC installation for variable speed drive systems. As an introduction, EMC standards have been mentioned in order to define the requirements characteristics, besides the fundamentals of static, electric, magnetic, and electromagnetic fields. Both inductive and capacitive coupling have been discussed to deal with shielding. Finally, VSDS emission and electromagnetic interferences were studied with installation requirement in VSDS (supply cables, cable between converter and motor, control cables, earthing requirements, and grounding).


Author(s):  
Aleksey V. Udovichenko ◽  
Dmitri Kaluzhskij ◽  
Nikita Uvarov ◽  
Ali Mekhtiyev

Improving the operational reliability of nuclear power plants, combined heat and power plants (CHP), as well as oil and gas pipelines is a priority task in the development of a variable-speed drive for lock valves used at these facilities. The paper analyzes technical requirements for such devices; the motor has been selected, its electrical equilibrium and moment equations have been obtained; recommendations for the selection of the kinematic drive scheme have been formulated. Based on the theoretical data obtained, a prototype has been developed, manufactured and tested.


Ergodesign ◽  
2020 ◽  
Vol 2020 (2) ◽  
pp. 93-98
Author(s):  
Vladislav Korobkin ◽  
Alexander Nefedovich

The description and results of experimental studies of rationality of using various computer control tools for the practice of developing a human-machine interface intended for automated workstations of system control operators for shipboard technical complexes are presented in the work.


Proceedings ◽  
2019 ◽  
Vol 48 (1) ◽  
pp. 22
Author(s):  
Christian Briceño ◽  
Pedro Iglesias ◽  
Javier Martinez

Proper design of a pumping system requires the use of a pump curve and set-point curve system. Both have to be as close as possible to optimize energy use. This is achieved by control systems in which the type of control (flow or pressure) and the combination between fixed speed drive (FSD) pumps and variable speed drive (VSD) pumps are involved. The objective of this work is to determine the optimal number of FSD and VSD pumps for each flow rate range in order to discuss the classic design of pumping stations and their control systems. For this, a methodology is applied that defines the parametric form of the pump curve, efficiency curve, and set-point curve in relation to the most efficient point. In this way, dimensionless expressions are obtained and the influence of the set-point parameters on the design of the control system can be analyzed. Additionally, the method includes an expression that estimates the performance of the frequency inverter, which is based on the load and pump speed rotation. The application of the methodology to different case studies allows us to question many classic procedures for pumping stations. In summary, it can be concluded that the appropriate number of variable speed pumps for each control system cannot be established in advance but requires an in-depth study of different available options.


Author(s):  
Safwan Mhrez Nadweh ◽  
Ola Ahmad Khaddam

This chapter introduces an analysis of power quality of variable-speed drive systems (VSDS). In this chapter, several issues have been discussed as VSDS in terms of cost and effectiveness, VSDS control loops (open loop, closed loop), and power quality in VSDS. Harmonics standards and harmonics in VSDS were discussed in this chapter in addition to highlighting the effects of harmonics on power factor, crest factor, and other power quality specifications. The solutions used to mitigate the harmonics in VSDS were discussed in detail. Finally, simulation of the conventional VSDS model and VSDS with one harmonic mitigation solution in order to clarify the usefulness of using this solution on power quality specifications were discussed.


2013 ◽  
Vol 385-386 ◽  
pp. 791-794
Author(s):  
Xiao Yu Bu ◽  
Ping Liu

The paper gives the introduction of characteristics and the work principle of the three-phase stepper motor. A method based on Siemens PLC (programmable logic controller) to the three-phase stepper motor control, PLC controlled the stepper motor by changing the system control parameters corresponding program to realize the three-phase stepper motor start and stop control, positive/negative control and speed control, can improve the control system flexibility and reliability, and obtain good control and accurate position.


2011 ◽  
Vol 120 ◽  
pp. 114-118 ◽  
Author(s):  
Angela Javorova ◽  
Jarmila Oravcová ◽  
Karol Velíšek

This paper deals about designing process of assembly system with using of modularity and CA systems. Paper describes the benefits of using the principle of modularity in the design process of assembly system. The methodology is divided in to the five project phases. There are: assembly product analysis, hardware specification, selection of proper control system, control system simulation and whole process simulation.


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