2 edition of Analysis and design of the brushless doubly-fed machine found in the catalog.
Analysis and design of the brushless doubly-fed machine
Patrick R. Rochelle
Written in English
|Statement||by Patrick R. Rochelle.|
|The Physical Object|
|Pagination||108 leaves, bound :|
|Number of Pages||108|
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It focuses on the main design criteria and on performance analysis to establish its behavior in load condition. The performance of a 15 kW prototype, comprising torque, current, efficiency, and power factor, is compared to simulation results and to other types of machines as synchronous and wound rotor induction machines. PM Brushless Machines Structure of PM Brushless Machines Doubly-Fed Vernier Reluctance Motor Drives DSDC DR Machine Design DSDC DR Machine Analysis Potential Applications of DR EVT Systems in HEVs References
Finally, on the basis of analyzing the design principle of the BDFM, the Ansoft/Maxwell is used to establish the model of doubly-fed brushless machine with the wound rotor, the 2-D transient electromagnetic fields of brushless doubly-fed machine (BDFM) is calculated by finite element method, the magnetic force line and air-gap magnetic field is. A coupled-circuit model for the brushless doubly fed machine (BDFM) has been developed. The transformation of the model into the d–q axis form, ultimately in a synchronous reference frame in which machine currents and voltages have constant values in the steady state, has been carried out. A model-reduction technique is presented, which gives a concise representation of the ‘nested-loop.
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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. Design and Analysis of Brushless Doubly Fed Reluctance Machines Article (PDF Available) in IEEE Transactions on Industry Applications 49(1) January with Reads How we.
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. Brushless doubly fed reluctance machines (BDFRMs) are a class of machines that may be controlled using a power converter that has a rating lower than the total power rating of the machine.
For the problem of the weaker coupling capability between the two sets stator winding of brushless doubly fed machine (BDFM), the lower power density and poor performance.
This paper researches a novel 8 + 4 pole radially laminated magnetic reluctance rotor BDFM, the finite element method is adopted to calculate magnetic : Feng-Ge Zhang, Qun Yang, Xiu-Ping Wang.
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 be-yond that proposed to date.
This dissertation contributes towards this goal through machine analysis, design and control. The proposed design method is supported by an analytical study and its practicality is validated using 2-D Finite Element (FE) analysis.
A kW experimental BDFM with frame size D is considered as the prototype machine. KW - Brushless doubly fed machine (BDFM) KW - rotor back iron. KW - finite element analysis (FEA) KW - magnetic circuit. Yi Liu Wu Ai Bing Chen Ke Chen.
Vol. 16, No. 1, pp.Jan. /JPE Brushless doubly-fed machine (BDFM) Control scheme Dynamic performance Hardware design Saving-energy performance Ship shaft generator PDF Abstract. This paper presents a stand-alone variable speed constant frequency (VSCF) ship shaft generator system based on a brushless doubly-fed machine.
This is followed by design considerations in Section 3. Sec-tion 4 discusses design optimization of BDFRM. Modelling and analysis of machine using ﬁnite elements are described in Section 5 followed by prototype results and discussion in Section 6.
Brushless Doubly Fed Reluctance Machine Many researchers and developers have shown keen interest. 9 hours ago Wind energy conversion systems (WECSs) seem certain to play a major part in the world’s energy future due to their known high power capacity.
The maximum power tracking is unavoidable due to the wind velocity variation and the non-linear relation with the turbine mechanical power. Commercial wind turbines are commonly coupled to either doubly-fed induction generators (DFIGs), wound rotor. Having advanced in recent years, brushless doubly fed machine (BDFM) becomes a novel AC variable frequency control machine which has a broad vista of application in wind power generation system.
Researchers focus on machine structure presently. Based on accurate analysis of electromagnetism relation, this paper firstly presents double-cage stator core structure in order to improve insulation. 6 A design procedure for the Brushless Doubly Fed machine is based on equations derived from a simpliﬁed equivalent circuit.
7 The method allows the many variables in the design of this machine to be handled in straightforward way. Introduction. Nowadays, brushless doubly fed reluctance generator (BDFRG) has been proposed as a potential alternative to the existing solutions for wind power applications,.The main reason of this increasing interest could be found in the reasonable cost and high reliability of the BDFRG because of its brushless structure.On the other hand, its comparative performance with.
Abstract: The brushless doubly fed reluctance machine (BDFRM) with a multibarrier rotor has shown great promise in applications where high reliability and low maintenance cost are required, such as offshore wind turbines.
This paper presents a systematic analytical analysis and performance characterization of the BDFRM with a multibarrier rotor.
First, the airgap magnetomotive. Wind energy conversion systems (WECSs) seem certain to play a major part in the world’s energy future due to their known high power capacity. The maximum power tracking is unavoidable due to the wind velocity variation and the non-linear relation with the turbine mechanical power.
Commercial wind turbines are commonly coupled to either doubly-fed induction generators (DFIGs), wound rotor. induction machine below or above natural synchronous speed.
In terms of power flow, regardless at the sub- super- or synchronous rotor speed, DEBM always can be operated as a motor or generator. The sizing of the kw/rpm DEBM starts with a comparable and conventional doubly fed wound rotor induction machine.
Design and analysis of brushless doubly fed reluctance machines. The brushless doubly-fed machine (BDFM) has been under investigation in its modern forms for 50 years. The reason for this interest is the machine's ability to operate as a brushless variable speed motor or generator through the use of a partially-rated power.
This paper compares alternative rotor designs for the brushless doubly-fed machine (BDFM) using finite element analysis to estimate their operating ranges and characteristics. Two types of rotors are considered: induction (with cage, nested layer, double layer and isolated layer) and reluctance rotors, so a total of five rotors are investigated.
Grid-connected converters are connected to the. The brushless doubly-fed machine is a novel AC speed regulation machine developed in recent years, its performance has the relationship with the transformation efficiency of rotor magnetic-field pole numbers.
Optimizing the design of rotor structure is the fundamental way to increase the transformation efficiency. By analyzing the salient pole rotor's characteristics, a new analogous salient.
Brushless doubly fed induction machine has acquired relevance as a wind electric generator because of its relative merits over doubly fed induction generator.
However, the main drawback of brushless doubly fed induction machine is the presence of torque ripples due to spatial and time harmonics caused by two stator windings and complex rotor.Brushless doubly fed induction generator has demonstrated potential capabilities in renewable energy and embedded power generation applications.
As a .Design scheme of brushless doubly-fed machine with barrier rotor is provided. Based on field-circuit coupled finite element method, The asynchronous operation performance of brushless doubly-fed machine with barrier rotor is studied under the condition of no-load, including adjusting voltage adjusting speed and series resistance adjusting voltage.