First Operational Experience with the new Plasma Position and Current Control System of JET

This article presents a control strategy that enables both islanded and grid-tied operations of a three-phase inverter in distributed generation. This distributed generation (DG) is based on a dramatically evolved direct current (DC) source. A unified control strategy is introduced to operate the interface in either the isolated or grid-connected modes. The proposed control system is based on the instantaneous tracking of the active power flow in order to achieve current control in the grid-connected mode and retain the stability of the frequency using phase-locked loop (PLL) circuits at the point of common coupling (PCC), in addition to managing the reactive power supplied to the grid. On the other side, the proposed control system is also based on the instantaneous tracking of the voltage to achieve the voltage control in the standalone mode and retain the stability of the frequency by using another circuit including a special equation (wt = 2πft, f = 50 Hz). This utilization provides the ability to obtain voltage stability across the critical load. One benefit of the proposed control strategy is that the design of the controller remains unconverted for other operating conditions. The simulation results are added to evaluate the performance of the proposed control technology using a different method; the first method used basic proportional integration (PI) controllers, and the second method used adaptive proportional integration (PI) controllers, i.e., an Artificial Neural Network (ANN).

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Real-time feedback control system for ADITYA-U horizontal plasma position stabilisation

Fusion Engineering and Design ◽

10.1016/j.fusengdes.2020.112218 ◽

2021 ◽

Vol 165 ◽

pp. 112218

Author(s):

Rohit Kumar ◽

Pramila Gautam ◽

Shivam Gupta ◽

R.L. Tanna ◽

Praveenlal Edappala ◽

...

Keyword(s):

Control System ◽

Feedback Control ◽

Real Time ◽

Feedback Control System ◽

Plasma Position

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Design of Electric Control System of Stainless Steel Composite Plate

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.706-708.716 ◽

2013 ◽

Vol 706-708 ◽

pp. 716-719

Author(s):

Jian Chu ◽

Gang Wang

Keyword(s):

Stainless Steel ◽

Control System ◽

Composite Plate ◽

Current Control ◽

Equipment Operation ◽

Electric Control ◽

Control Scheme ◽

Steel Composite ◽

Machine Interface ◽

Electrical Components

This paper mainly introduced to the PLC as the core of stainless steel composite plate electric control part of the design. The system uses the converter +PLC+ man-machine interface, as the major part of roll welding machine control, because of the use of the PLC, so that the system can improve the automatic level, electrical components is reduced, reduce failure rate, improve the reliability of equipment operation. Based on the current control and speed control, so that the welding quality and welding speed has been greatly improved. In the article, mainly from the production process, and the control system hardware and software design, and the control scheme to introduce several aspects.

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Analysis and Evaluation of Current Control System of PMSM with Time-Delay to Improve Parallelization for Implementation on Multi-core Precessors

2019 22nd International Conference on Electrical Machines and Systems (ICEMS) ◽

10.1109/icems.2019.8921506 ◽

2019 ◽

Author(s):

Jinsoo Kim ◽

Kato Seiya ◽

Masato Edahiro ◽

Shinji Doki

Keyword(s):

Control System ◽

Time Delay ◽

Current Control ◽

Analysis And Evaluation

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Sootblowing Optimization Improves Heat Rate and Enhances Operational Flexibility at Hawthorn Unit 5

Volume 1: Fuels and Combustion, Material Handling, Emissions; Steam Generators; Heat Exchangers and Cooling Systems; Turbines, Generators and Auxiliaries; Plant Operations and Maintenance; Reliability, Availability and Maintainability (RAM); Plant Systems, Structures, Components and Materials Issues ◽

10.1115/power2014-32280 ◽

2014 ◽

Author(s):

Neel J. Parikh ◽

Peter Rogge ◽

Kenneth Luebbert

Keyword(s):

Control System ◽

Closed Loop ◽

Heat Rate ◽

Operating Conditions ◽

Operational Experience ◽

Unit Operation ◽

Gas Temperature ◽

Dynamic Adjustment ◽

Operational Parameters ◽

Unit Load

Coal-fired units are increasingly expected to operate at varying loads while simultaneously dealing with various operational influences as well as fuel variations. Maintaining unit load availability while managing adverse effects of various operational issues such as, flue gas temperature excursions at the SCR inlet, high steam temperatures and the like presents significant challenges. Dynamic adjustment of sootblowing activities and different operational parameters is required to effectively control slagging, fouling and achieve reliability in unit operation. Closed-loop optimizers aim to reduce ongoing manual adjustments by control operators and provide consistency in unit operation. Such optimizers are typically computer software-based and work by interfacing an algorithmic and/or artificial intelligence based decision making system to plant control system [1]. KCP&L is in the process of implementing Siemens SPPA-P3000 combustion and sootblowing optimizers at several Units. The Sootblowing Optimizer solution determines the need for sootblowing based on dynamic plant operating conditions, equipment availability and plant operational drivers. The system then generates sootblower activation signals for propagation in a closed-loop manner to the existing sootblower control system at ‘optimal’ times. SPPA-P3000 Sootblowing Optimizer has been successfully installed at Hawthorn Unit 5, a 594-MW, wall-fired boiler, firing 100 percent Powder River Basin coal. This paper discusses implementation approach as well as operational experience with the Sootblowing Optimizer and presents longer-term operational trends showing unit load sustainability and heat rate improvement.

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