2 edition of Direct torque control for brushless doubly-fed machines found in the catalog.
Direct torque control for brushless doubly-fed machines
William R. Brassfield
Written in English
|Statement||by William R. Brassfield.|
|The Physical Object|
|Pagination||74 leaves, bound :|
|Number of Pages||74|
Reluctance Electric Machines: Design and Control - CRC Press Book Electric energy is arguably a key agent for our material prosperity. With the notable exception of photovoltaic generators, electric generators are exclusively used to produce electric energy from mechanical energy. The Brushless Doubly-Fed Machine (BDFM) shows commercial promise as a variable speed drive or generator. However, for this promise to be realised the design of the machine must be improved beyond that proposed to date. This dissertation contributes towards this goal through machine analysis, design and control. A generalised framework is developed for a coherent and rigorous derivation of Cited by: 7.
Predictive Direct Torque Control Strategy for Doubly Fed Induction Machine for Torque and Flux Ripple Minimization. Further the concept of DTC have been applied to the brushless doubly fed induction machine,, or the equivalent Direct Power Control Help us write another book Author: Gopala Venu Madhav, Y.P. Obulesu. 1 Design Considerations for the Brushless Doubly 2 Fed (Induction) Machine 3 6 A design procedure for the Brushless Doubly Fed machine is based on equations derived from a simpliﬁed equivalent circuit. 52 There should not be any direct coupling between the two stator windings. For fully pitched windings, choosing pole-pair.
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Doubly-fed electric machines also slip-ring generators are electric motors or electric generators, where both the field magnet windings and armature windings are separately connected to equipment outside the machine. By feeding adjustable frequency AC power to the field windings, the magnetic field can be made to rotate, allowing variation in motor or generator speed.
In this paper, a direct torque control (DTC) strategy for the brushless doubly fed machine (BDFM) is presented. After analyzing the mathematical model of this machine, the voltage vectors look-up table of classical DTC techniques is fixdemocracynow.com by: A new control strategy called synthetic vector direct torque control (SVDTC) is proposed to solve the losing control problems of the conventional direct torque control (DTC).
Study on the Static Load Capacity and Synthetic Vector Direct Torque Control of Brushless Doubly Fed Machines. Study on the Static Load Capacity and Synthetic Cited by: 5. The brushless Doubly-Fed Machine (BDFM) shows commercial benefits in the wind power generation.
This paper presents a vector control scheme for the BDFM operating as a. The study considers aspects of scalar V/f control, vector control and direct torque (and flux) control (DTC) of the brushless doubly fed reluctance machine (BDFRM) as a promising cost-effective.
In this paper, a direct torque control strategy for the brushless doubly fed machine is presented. The classical direct torque control strategy for brushless doubly fed machines has been developed, obtaining the voltage vector table.
The vector voltage table has been developed analyzing the flux and torque derivatives for each voltage vector as a function of control winding flux angle. Two. Flux Observer Algorithms for Direct Torque Control of Brushless Doubly-Fed Reluctance Machines Hamza Chaal and Milutin Jovanovic Northumbria University, School of Computing, Engineering and Information Sciences Newcastle upon Tyne NE1 8ST, United Kingdom E-mail: [email protected]; [email protected] Improved Direct Torque Control of a Brushless Doubly-Fed Reluctance Machine William K Song Supervisor: Improved Direct Torque Control of a Brushless Doubly-Fed Reluctance Machine but other machines include brushless permanent magnet machines (high eﬃciency machines, and with the use of high energy rare.
Brushless doubly-fed induction electric machine. Brushless doubly-fed induction electric machine is constructed by adjacently placing two multiphase winding sets with unlike pole-pairs on the stator body. With unlike pole-pairs between the two winding sets, low frequency magnetic induction is assured over the speed range.
As a doubly fed electric machine, the rating of the frequency converter need only be fraction of the machine rating. The brushless doubly fed electric machine does not utilize core real-estate efficiently and the dual winding set stator assembly is physically larger than. Direct Torque Control for Brushless Doubly-Fed Machine Based on Fuzzy-PI Regulator p New Implementation of Position Sensorless Control Based on the AC Component of SNP for Brushless DC Motor Torque ripple minimization strategy for the direct torque control of brushless doubly-fed machine [J].
Electric machines and control,10 (6 Author: Xiao Peng, Mo Fa Li, Yong Jian Li. Brushless doubly-fed motor (BDFM) has well applicable potentials in the speed control driving field due to its excellent speed regulation performance. However, the poor starting performance becomes a shortage that still limits the development and application of wound BDFM.
To solve the problem, this paper presents a novel BDFM adopted rotor winding based on the principle of the composite coil Author: Zhiwei Ruan, Chaohao Kan, Chenglong Chu, Taian Ren, Qiuming Chen. torque control angular velocity control invertors machine control reluctance machines inverter-fed winding sensorless control brushless doubly-fed reluctance machines angular velocity observer doubly-excited wound rotor induction machines power electronics reliability BDFRM drive direct torque control speed control flux control Velocity.
The third edition includes additional diagrams and worked examples throughout. New topics include digital interfacing and control of drives, direct torque control of induction motors and current-fed operation in DC drives.
The material on brushless servomotors has also been expanded. Abstract: The paper considers aspects of scalar V/f control, vector control and direct torque (and ﬂux) control (DTC) of an emerging cost-effective technology for limited speed range applications - the brushless doubly fed reluctance machine (BDFRM).
Apart from giving a comprehensive review of the various control methods, its. Optimization techniques are widely used in the design of electrical machines to obtain maximum performance at minimal capital cost.
After a brief overview of some of the optimization techniques employed in electrical machine design, this chapter highlights the features of brushless doubly fed reluctance machine (BDFRM) and its optimal fixdemocracynow.com: Mandar Bhawalkar, Gopalakrishnan Narayan, Yogesh Nerkar.
The paper introduces Working mode of brushless doubly-fed machine（BDFM） and mathematical model in the d-q coordinates for BDFM，a strategy of discrete space vector modulation in direct torque control for BDFM has been Proposed 。The paper uses Matlab / Simulink to model and simulate the system of the direct torque control for brush double-fed motor based on discrete Space Vector Author: Wen Jie Yang.
change with recent Brushless Wound-Rotor Doubly Fed Electric Machine technology development. As do all electromagnetic electric machines, doubly fed machines need torque current to produce torque. Because there are no permanent magnets with a persistent but.
A New Approach on the Design and Optimization of Brushless Doubly-Fed Reluctance Machines Tiago STAUDT 1, 2, Frédéric WURTZ, Laurent GERBAUD,Nelson Jhoe BATISTELA2, Patrick KUO-PENG 1Grenoble Electrical Engineering Laboratory (G2ELab) UMR.
Abstract – Experts theorized that a Brushless Multiphase Wound-Rotor [Synchronous] Doubly-fed Electric Machine System (BWRSDF), which can symmetrically motor or generatewith variable speed, provides higher efficiency, higher power density, higher torque density, and.
used for stator frame control of almost all brushless machines. However, until very recently, its application to doubly-fed machines (DFMs) in general has been little reported in the literature. An alternative rotor frame based DTC technique for the BDFIM required a shaft position sensor for torque control, Fig.
1.Torque ripple in electrical machines is caused by many factors. By evaluating torque with the use of Fourier theory, it is found that torque ripple can be caused by either space-harmonic components in the air-gap magnetic field or by Brushless Doubly-Fed Induction Machines: Torque Ripple.Improved Direct Torque Control of a Brushless Doubly-Fed Reluctance Machine William K Song Supervisor: Improved Direct Torque Control of a Brushless Doubly-Fed Reluctance byWilliamKSong An improved Direct Torque Control algorithm for the brushless doubly-fed reluc-tancemachine(BDFRM)hasbeenproposedinthisthesis.
TheconventionalDTC Author: William K. Song.