Saliency performance investigation of synchronous machines for position sensorless controlled EV drives

Villet, W. T.; Prins, Michiel H. A.; Vorster, Chris W.; Kamper, Maarten J.

doi:10.1109/sled-precede.2013.6684520

Cited by 4 publications

(3 citation statements)

References 26 publications

(38 reference statements)

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“…Based on the factors above, in addition, there are several researchers used the fully optimization of the inverters has invented the topologies that undergone constant change which the first was CSI followed by VSI based on application [22]. AC motor drives give benefits in term of process control, system stress and energy savings [23].…”

Section: Introductionmentioning

confidence: 99%

Reduction of total harmonic distortion of three-phase inverter using alternate switching strategy

Ramli

Jidin

Rasin

et al. 2021

IJPEDS

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Alternating current (AC) electrical drives mainly require smaller current (or torque) ripples and lower total harmonic distortion (THD) of voltage for excellent drive performances. Normally, in practice, to achieve these requirements, the inverter needs to be operated at high switching frequency. By operating at high switching frequency, the size of filter can be reduced. However, the inverter which oftenly employs insulated gate bipolar transistor (IGBT) for high power applications cannot be operated at high switching frequency. This is because, the IGBT switching frequency cannot be operated above 50 kHz due to its thermal restrictions. This paper proposes an alternate switching strategy to enable the use of IGBT for operating the inverter at high switching frequency to improve THD performances. In this strategy, each IGBT in a group of switches in the modified inverter circuit will operate the switching frequency at one-fourth of the inverter switching frequency. The alternate switching is implemented using simple analog and digital integrated circuits.

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Section: Introductionmentioning

confidence: 99%

Reduction of total harmonic distortion of three-phase inverter using alternate switching strategy

Ramli

Jidin

Rasin

et al. 2021

IJPEDS

View full text Add to dashboard Cite

show abstract

“…The second topology, (b), is created by implementing circles to generate the respective flux barriers with examples provided in [2], [7], [8]. The third topology, (c), implements second-order polynomials, as illustrated in [9].…”

Section: Introductionmentioning

confidence: 99%

“…As can be seen in the figure, the central support web commonly implemented ( [2], [7], [8], [14], [15]) in the barrier creation for rotor rigidity has been omitted. This omission is in order to increase the saliency ratio and hence the performance of the machine, as suggested by [9].…”

Section: Introductionmentioning

confidence: 99%

Asymmetric Flux Barrier and Skew Design Optimization of Reluctance Synchronous Machines

Howard

Kamper

Gerber

2015

IEEE Trans. on Ind. Applicat.

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In this paper an investigation into an alternative topology for reluctance synchronous machine rotor flux barriers is presented. The investigated topology employs a high number of flux barrier variables with an alternative asymmetric rotor structure. The focus in the paper is on maximising average torque and minimising torque ripple, using finite element-based design optimisation, in order to study the possibility of achieving acceptably low torque ripple. A subsequent investigation into the effect of rotor skew on the proposed optimised design to reduce torque ripple even further is also conducted, as well as the manufacturing and testing of the proposed flux barrier prototype. I. INTRODUCTIONWith the increasing emphasis on efficiency and cost reduction, the interest in reluctance synchronous machines (RSMs) has grown during the past decade. This interest is driven by not only the robustness, efficiency and simplicity of RSMs, but also by the fact that the cost of rareearth magnets is increasing and their market stability is decreasing.The main focus of most RSM design optimisation, depending on application, is on maximising average torque (T A ), within the limits of an allowable volume, and minimising torque ripple (T R ). The latter is conventionally achieved by rotor skewing and stator cording in order to reduce the air-gap harmonics that produce a high T R . In this paper, the possibility of both maximising T A and minimising T R without implementing rotor skew techniques to achieve acceptable T R values is investigated. A further investigation into the effect of rotor skew on the proposed topology to reduce T R values even further is also presented.A large part of the design of RSMs is focused on the rotor creation, and more specifically the type of flux barrier topology and its creation procedure. With the latter in mind, two creation techniques are summarised by Vagati [1], the first of which implements generalised lumped-parameter modelling of the rotor magnetic circuit and the second, a numeric design optimisation of a rotor flux barrier structure.The second procedure is implemented in this research. This procedure is based on a predetermined basic barrier structure with a fixed number of variable parameters, such as barrier tip angle and barrier width. These parameters are numerically optimised by implementing a finite element method (FE) package that calculates each iteration's relevant machine performance parameters, for example torque and torque ripple. Examples of this design procedure can be found in [2]-[5]. The advantage of this approach is that the optimisation inherently takes complex phenomena, such as torque harmonics and cross saturation, into account.In RSM design, three basic rotor topologies have emerged with combinations and small variations between specific

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Flux barrier and skew design optimisation of reluctance synchronous machines

Howard

Kamper

Gerber

2014

2014 International Conference on Electrical Machines (ICEM)

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Saliency performance investigation of synchronous machines for position sensorless controlled EV drives

Cited by 4 publications

References 26 publications

Reduction of total harmonic distortion of three-phase inverter using alternate switching strategy

Reduction of total harmonic distortion of three-phase inverter using alternate switching strategy

Asymmetric Flux Barrier and Skew Design Optimization of Reluctance Synchronous Machines

Flux barrier and skew design optimisation of reluctance synchronous machines

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