scholarly journals Wind farm control ‐ Part I: A review on control system concepts and structures

2021 ◽  
Author(s):  
Leif Erik Andersson ◽  
Olimpo Anaya‐Lara ◽  
John Olav Tande ◽  
Karl Otto Merz ◽  
Lars Imsland
Keyword(s):  
Control System ◽  
Wind Farm ◽  
Control Part

Full-scale Performance of the SES Motion Control System

2015 ◽  
Author(s):  
Øyvind F. Auestad ◽  
J. William McFann ◽  
Jan T. Gravdahl
Keyword(s):  
Control System ◽  
Motion Control ◽  
High Speed ◽  
Wind Farm ◽  
Surface Effect ◽  
Vertical Plane ◽  
Full Scale ◽  
Offshore Wind ◽  
Motion Control System ◽  
Air Cushion

The pressurized air cushion on a Surface Effect Ship (SES) can lift up to 80% of total vessel mass. The SES Motion Control System (SES-MCS) controls the vent valves which again controls the air cushion pressure, assuming lift fan air flow is pressurizing the air cushion. By controlling the air cushion pressure one can significantly counteract vertical sea wave disturbances, ensure high passenger comfort and reduce sea-sickness. The case studied in this work is the Umoe Mandal Wave Craft prototype, ’Umoe Ventus’, which is a high-speed offshore wind-farm service vessel specially designed for control in the vertical plane. The SES-MCS can adjust the draft from 1m to 3.2m in less time than the wave period. The SES-MCS can reduce motions significantly in order to perform Operation and Maintenance (O&M) in high seas. The craft is the fastest wind-farm service vessel of its size with high comfort in all relevant sea states. The performance of the SES-MCS is demonstrated through full-scale sea trials.

Control of DFIG Based on Per-Unit System on RTDS

2013 ◽  
Vol 756-759 ◽  
pp. 298-302
Author(s):  
Yu Lan Hu ◽  
Yi Wang ◽  
De Xing Sun ◽  
Tao Ding ◽  
Luo Jiang Qian
Keyword(s):  
Wind Farm ◽  
Induction Machine ◽  
Value System ◽  
Unit Value ◽  
Doubly Fed Induction Machine ◽  
Real Time Digital Simulator ◽  
Vector Orientation ◽  
Doubly Fed ◽  
Rotating Coordinates ◽  
Control Part

The paper introduces modeling of Doubly-fed induction machine (DFIG) on orthogonal dq rotating coordinates based on per-unit value system and designs control part on space-vector-orientation, for which relative modules, in RTDS (Real time digital simulator) library, are introduced. Whole single-machine DFIG wind farm is built on RTDS and the maximal wind energy tracking is realized. Simulating results show control is correct and effective.

Camera Elevator Control Design for Manipulator Crane in PWR

2013 ◽  
Author(s):  
Lei Zhang ◽  
Peng Zhang
Keyword(s):  
Control System ◽  
Power Distribution ◽  
Control Design ◽  
Motor Drive ◽  
Control Panel ◽  
Servo Motor ◽  
Control Logic ◽  
Crane Control ◽  
Operational Information ◽  
Control Part

Camera elevator is the dominating device of the manipulator crane closed circuit TV system which is used in under constructing domestic PWR in China. The manipulator operator can use camera elevator to view refueling operation (insertion and withdrawal) and other underwater condition. This document expatiates on the independent design of camera elevator control system which is integrated on manipulate crane control system. The success of the design will provide conveniences to the operator to let him to operate both hoist and camera elevator. To contribute to the invention of manipulator crane control system in PWR, the control of camera elevator, which is the main part of the system, is developed totally. The camera elevator control system is mainly composed of power distribution part, PLC control part, HMI control part, Servo-motor drive part, position measuring part, weight measuring part and safety protection part. The control design includes requirement corresponding, electrical product selection and configuration, PLC software program development, Servo-motor drive software setting, HMI and control panel design and so on. The document is very detailed to describe the control design process and emphasizes the software development. The logic controller is consisted of two systems, one is standard logic controller and other one is safety controller. The PLC software is the most important technique which includes whole control logic of device and all interlock protect function. The Servo-motor drive software can guarantee motor has good dynamic characteristic and short response time. The HMI design can provide most of operational information, fault alarm display, interlock and bypass operations etc. The control design has been validated by lots of test to assure the camera elevator’s function is up to related specification requirement finally.

Numerical Control System Research and Development of Acrobatic Stage

2014 ◽  
Vol 598 ◽  
pp. 574-577
Author(s):  
Peng Xian Cao ◽  
Hong Bin Cui ◽  
Xin Yu Liu ◽  
Xue Song Yu ◽  
Chang Long Liu
Keyword(s):  
Control System ◽  
Research And Development ◽  
Numerical Control ◽  
Numerical Control System ◽  
System Research ◽  
Continuous Development ◽  
Strain Capacity ◽  
3D Space ◽  
And Control ◽  
Control Part

With the continuous development of CNC technology, its application is more and more extensive. In recent years, the application of CNC technology in the area of stage also made great achievements. This paper detailed a scientific and reasonable scheme of acrobatic stage machinery and its control part, using CNC technology in acrobatic stage, through the corresponding algorithm and software realizing the operation and control of any trajectory in 3D space, taking advantage of intelligent editing function of screen running track, and compared with the traditional acrobatic stage , it gets more flexible, stronger strain capacity.

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