Brushless Field Excitation Scheme for Wound Field Synchronous Machines

Bukhari, Syed Sabir Hussain; Sirewal, Ghulam Jawad; Chachar, Faheem Akhtar; Ro, Jong‐Suk

doi:10.3390/app10175866

Cited by 5 publications

(7 citation statements)

References 14 publications

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“…In [127], the sensorless integrated S/G is proposed. Many various S/Gs are being studied for aerospace applications (Figure 5); these are permanent magnet synchronous machines (PMSMs) [128][129][130][131], induction machines (IMs) [132][133][134][135], switched reluctance machines (SRMs) [136][137][138][139][140][141][142][143], and wound rotor synchronous machine (WRSM) [94,[144][145][146][147].…”

Section: International Journal Of Aerospace Engineeringmentioning

confidence: 99%

“…WRSMs are widely used in CAPC as AC generators; however, due to the digital control of power converters, they can find its application in MEA as S/G with high power density, high reliability, and simple maintenance features [147]. Additionally, high power factor at wide speed range, reduced voltage transients, and improved electrical safety is the advantages of WRSM [144].…”

Section: International Journal Of Aerospace Engineeringmentioning

confidence: 99%

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Perspectives and Development of Electrical Systems in More Electric Aircraft

Arabul

Kurt

Arabul

et al. 2021

International Journal of Aerospace Engineering

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On-board electrical systems are the key components of each modern aircraft. They enable its safer, more comfortable, and environmentally friendlier operation. The strict regulations to reduce pollution and noise are produced by aircraft eventuated in projects like Clean Sky or ICAO Global Coalition for Sustainable Aviation. One solution to environmentally friendlier operation is the full electric propulsion of the aircraft, which enables the reduction of both noise and pollution. Such a concept requires a total change of all on-board power systems and enables the profound change in aircraft design. This paper presents the evolution of aircraft power systems into the so-called more electric aircraft (MEA) and discusses the state-of-the-art electrical systems. Furthermore, the concept of all-electric aircraft (AEA) is presented here.

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Section: International Journal Of Aerospace Engineeringmentioning

confidence: 99%

Section: International Journal Of Aerospace Engineeringmentioning

confidence: 99%

Perspectives and Development of Electrical Systems in More Electric Aircraft

Arabul

Kurt

Arabul

et al. 2021

International Journal of Aerospace Engineering

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“…For the typical WFSM topology employing 3 rd harmonic injection-based field excitation scheme [12], the magnetomotive force (MMF) for each phase is expressed as:…”

Section: Mathematical Modellingmentioning

confidence: 99%

“…The rotor field is excited in a typical WFSM, utilizing an excitation approach that includes brushes, slip rings, and a separate exciter. On the rotor side, a brushes and slip rings assembly connects the machine field winding to the excitation system [11][12][13][14]. The usage of brushes in a typical WFSM increases its maintenance cost due to their periodic replacement and continuous sparking.…”

Section: Introductionmentioning

confidence: 99%

High-Harmonic Injection-Based Brushless Wound Field Synchronous Machine Topology

et al. 2021

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This paper discusses the design and analysis of a high-harmonic injection-based field excitation scheme for the brushless operation of wound field synchronous machines (WFSMs) in order to achieve a higher efficiency. The proposed scheme involves two inverters. One of these inverters provides the three-phase fundamental-harmonic current to the armature winding, whereas the second inverter injects the single-phase high-harmonic i.e., 6th harmonic current in this case, to the neutral-point of the Y-connected armature winding. The injection of the high-harmonic current in the armature winding develops the high-harmonic magnetomotive force (MMF) in the air gap of the machine beside the fundamental. The high-harmonic MMF induces the harmonic current in the excitation winding of the rotor, whereas the fundamental MMF develops the main armature field. The harmonic current is rectified to inject the direct current (DC) into the main rotor field winding. The main armature and rotor fields, when interacting with each other, produce torque. Finite element analysis (FEA) is carried out in order to develop a 4-pole 24-slot machine and investigate it using a 6th harmonic current injection for the rotor field excitation to both attain a brushless operation and analyze its electromagnetic performance. Later on, the performance of the proposed topology is compared with the typical brushless WFSM topology employing the 3rd harmonic current injection-based field excitation scheme.

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“…Permanent magnet (PM) machines except for those using ferrite magnets are not a preferred choice for the electrical machine manufacturing industry, especially when considering the low-power density applications [1]. The cost of rare-earth materials has recently hit new highs [2]- [3].…”

Section: Introductionmentioning

confidence: 99%