Brushless stator-controlled synchronous-induction machine

Broadway, A.R.W.; Tan, Sen

doi:10.1049/piee.1973.0189

Cited by 13 publications

(5 citation statements)

References 8 publications

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“…The nested-loop rotor cage has the advantages of high robustness, lower losses, and ease of manufacturing while decreasing excessive rotor leakage inductance compared with conventional cage or wound-rotor structures. In the following years, they continued to research saturation effects due to the superposition of two magnetic fields in one stator frame [15], and the synchronous mode of operation for the self-cascaded machine [16]. The synchronous mode of operation could be obtained by supplying DC current to the second stator winding.…”

Section: Historical Evolution Of the Brushless Dfimmentioning

confidence: 99%

Brushless doubly‐fed induction machines for wind turbines: developments and research challenges

Strous

Polinder

Ferreira

2017

IET Electric Power Applications

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The brushless doubly-fed induction machine (DFIM) provides an interesting alternative to the commonly applied conventional DFIM in modern multi-megawatt (MW) wind turbines. This study presents a literature survey on the brushless DFIM. The evolution of the cascaded induction machine into the modern brushless DFIM is discussed, as well as several theories explaining this machines complex operating principles. Nowadays, brushless DFIM research is mainly focused on the development of a commercially competitive brushless DFIM-based drive for multi-MW wind turbine applications. An overview of the latest developments in the fields of brushless DFIM modelling, design, and control is provided. Based on this, a qualitative comparison is presented of the brushless DFIM and other wellestablished generator systems for wind turbines and the challenges for future research are explored.

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Section: Historical Evolution Of the Brushless Dfimmentioning

confidence: 99%

Brushless doubly‐fed induction machines for wind turbines: developments and research challenges

Strous

Polinder

Ferreira

2017

IET Electric Power Applications

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“…The machine is brushless and there are no windings on the rotor, including damper windings, the main and auxiliary windings being located on the stator side only. The machine is slip curve is similar to phase induction motor operating at half as reported in [2] and [3]. Analogously to an induction motor, the relationship between the frequency of the current in the main and From the on-set of analysis, the paper by Cathey [5] treated the machine as an induction machine and obtained a single magnetizing reactance from which performance was assessed.…”

mentioning

confidence: 93%

Enhancement of the Performance of a Transfer Field Electric Machine Operating in the Asynchronous Mode

Obe

Anih

2014

Nig. J. Tech.

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ABSTRACT ABSTRACTThis paper re This paper re This paper re This paper reports the enhancement of the ou ports the enhancement of the ou ports the enhancement of the ou ports the enhancement of the ou the asynchronous mode by direct capacitance injection into the auxiliary winding of the machine, which is the asynchronous mode by direct capacitance injection into the auxiliary winding of the machine, which is the asynchronous mode by direct capacitance injection into the auxiliary winding of the machine, which is the asynchronous mode by direct capacitance injection into the auxiliary winding of the machine, which is electrically isolated from the main winding but magnetically coupled to it. It is shown electrically isolated from the main winding but magnetically coupled to it. It is shown electrically isolated from the main winding but magnetically coupled to it. It is shown electrically isolated from the main winding but magnetically coupled to it. It is shown injected capacit injected capacit injected capacit injected capacitance, the ance, the ance, the ance, the torque and output power of the machine is markedly enhanced at improved power factor. torque and output power of the machine is markedly enhanced at improved power factor. torque and output power of the machine is markedly enhanced at improved power factor. torque and output power of the machine is markedly enhanced at improved power factor. With the enhanced output power achievable by capacitance injection, the transfer field machine can compare With the enhanced output power achievable by capacitance injection, the transfer field machine can compare With the enhanced output power achievable by capacitance injection, the transfer field machine can compare With the enhanced output power achievable by capacitance injection, the transfer field machine can compare favorably favorably favorably favorably with an equivalent induction motor except t with an equivalent induction motor except t with an equivalent induction motor except t with an equivalent induction motor except t frequency of the stator mmf wave (ω frequency of the stator mmf wave (ω frequency of the stator mmf wave (ω frequency of the stator mmf wave (ωr r r r = = = =

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“…The Hunt machine is the oldest precursor of both the BDFRM and the BDFIM as they are known today and was particularly interesting for low-speed applications. About 50 years later, in the early 1970s, Broadway studied the self-cascaded induction machine ( [9][10][11][12]) and introduced improvements to the BDFIM-rotor design with a nested-loop rotor, increasing the robustness and simplicity of the motor. He also conducted research on reluctance rotor variants and performed experimental tests, but only in the two special cases where (i) the control winding is short-circuited (asynchronous operation mode) and (ii) the control winding is excited with a DC voltage (synchronous operation mode).…”

Section: Introduction 1literature Reviewmentioning

confidence: 99%

On Analytical Modeling of the Air Gap Field Modulation in the Brushless Doubly Fed Reluctance Machine

et al. 2021

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The brushless doubly fed reluctance machine (BDFRM) is receiving an increased amount of attention from the research community thanks to its potential as an alternative drive for variable speed applications, both as motor and generator. Currently, the sizing of the BDFRM in the literature is based on the model of an ideal axially laminated rotor (ALR) and discrepancies are hidden in compensation factors which are in turn tuned with a finite element analysis (FEA). This paper proposes an analytical framework to accurately model the air gap field modulation, and by extension the torque density, of the BDFRM with ducted segmental rotor (DSR) and salient pole rotor (SPR). The results are verified with FEA and validated on a BDFRM prototype.

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Brushless stator-controlled synchronous-induction machine

Cited by 13 publications

References 8 publications

Brushless doubly‐fed induction machines for wind turbines: developments and research challenges

Brushless doubly‐fed induction machines for wind turbines: developments and research challenges

Enhancement of the Performance of a Transfer Field Electric Machine Operating in the Asynchronous Mode

On Analytical Modeling of the Air Gap Field Modulation in the Brushless Doubly Fed Reluctance Machine

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