Variable Speed Drives
Novel Recuperation Capability for Variable Speed Drives
... electrical drives have become very important features within variable speed drive ...electrical drives are therefore usually equipped with cost extensive pulsed active front end topologies for ...
6
Cascaded Control System of the Modular Multilevel Converter for Feeding Variable Speed Drives
... ABSTRACT-, The design process of a holistic control system for a MMC to feed variable-speed drives is proposed in this paper. The performance of the control system is finally validated by ...
8
Modular Multilevel Converter for Feeding Variable Speed Drives of Cascaded Control System Using Fuzzy S Jayaprakash & Mr P Muni Sekhar
... The design process of a holistic control system for a MMC to feed variable-speed drives is proposed in this paper.The performance of the control system is finally validated by measurements on a ...
10
An enhanced dq based vector control system for modular multilevel converters feeding variable speed drives
... Roberto C ´ardenas (S’95-M’97-SM’07) was born in Punta Arenas Chile. He received his B.Sc. degree from the University of Magallanes, Chile, in 1988 and his Msc. and Ph.D degrees from the University of Nottingham in 1992 ...
10
Photovoltaic Systems with Cascaded Modular Multilevel Converters for Feeding Variable-Speed Drives
... feed variable speed drives is derived on the base of the analysis of the equivalent circuit as well as of the active power components in the arms by using PV ...
5
Variable Speed Drives: Energy Saving and SCADA System
... Water wastage in plants or non-revenue water (NRW) has become the national concern off late. NRW is Abstract: In this paper, implementation of variable speed drives (VSD) in a water treatment plant ...
6
Programmable logic controller based variable speed drives for educational trainer
... the speed of a universal ...[2]. Speed control is achieved by the varying the firing angle for the ...for speed control of the ...the speed of the ...
40
Wireless Control of PMDC Motors, Through Variable Speed Drives
... User enters a desired value of RPM from remote location, which is transmitted to control circuit via wireless ZigBee devices [7]. The microcontroller then converts the RPM value into corresponding voltage value as per ...
5
DESIGN OF A FUZZY CONTROLLER FOR THE CONTINUOUS CASTING PROCESS
... Two of the major problems in continuous casting are cracks and breakouts. Usually primary cracks are associated with breakouts and can also develop into more pronounced cracking in the secondary cooling zone. This paper ...
8
The new flux switching motor : a DC motor without brushes
... Pollock, "The Design and Performance of a Self-Starting Switched Reluctance Drive", IEE Conference on Power Electronics and Variable Speed Drives, September 1996, pp.. Chan, "Single Phas[r] ...
302
A hybrid modular multilevel converter for medium-voltage variable-speed motor drives
... in variable-speed drives, this paper proposed a new hybrid MMC topology which can significantly reduce the capacitor voltage ripple, particularly at low motor speeds, while providing rated torque to ...
11
Acoustic noise radiated by PWM-controlled induction machine drives
... Both harmonic-eliminated and optimal PWMs with minimal harmonic content often result in reduced losses as well as a lower acoustic noise level [3]. However, as mentioned above, it is important to consider the -weighted ...
11
Dynamic Simulation of Variable-Speed Valve-Controlled-Motor Drive System with a Power-Assisted Device
... the variable-speed drive has two critical disadvantages, slow response and poor control precision, which resulting from the large inertia of the electric-motor [8] and hydraulic ...called ...
11
Dynamic Analysis of Moving Cables with Variable Tension and Variable Speed
... of speed in which natural frequency of the system approaches ...specific speed for such a critical condition is called critical speed and it will be proved that increasing the cable tension increases ...
12
Energy Saving Mechanism Using Variable Frequency Drives
... Figure 1 below compares the relative power requirements of a fan at different flow rates, using three types of throttling control: outlet damper control, variable inlet vane control, and VFD control. Although VFDs ...
7
Variable speed constant frequency scheme for wind power generation
... external variable voltage source at the (+)/(-) battery ...external variable source; replace it with any battery which needs to be charged, connect the input of rectifier to ...
6
Implementation of Variable Frequency Drive on Underground Main Fans for Energy SavingsCase Study
... ABSTRACT :Energy is a fundamental need for industries in every part of the world. The cost of electricity has increased significantly in the recent years and this trend is expected to continue in the coming years as ...
6
High speed drives review: machines, converters and applications
... A number of projects targeting this application have been described in literature. A comprehensive multi-domain topology selection studies for this application is presented in [12] in which the authors compare the ...
6
Power electronics converters for grid intregrated variable speed wind turbine
... power supply. Falling prices of the power electronics have made the variable speed technology more economical and common. The distributed generation cannot connect easily to the electric power network ...
7
Intelligent Control for the Variable-Speed Variable-Pitch Wind Energy System
... (variable speed wind tur- bines) or VSVPWT (variable speed variable pitch speed wind turbines) ...wind speed is below the rated value, wind energy conversion efficiency is ...
9