Design of a Variable Phase-Pole Induction Machine for Electric Vehicle Applications

Raj, Rishabh; Subramaniyane, Prithivirajan; Peretti, Luca

doi:10.1109/icem51905.2022.9910688

Cited by 11 publications

(11 citation statements)

References 17 publications

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“…[12] also describes this phenomenon. In order to avoid aliasing, the rotor side Clarke transformation is adapted as in (2). The harmonic planes have the same virtues as conventional vector spaces in VSD as they are derived from the same type of transformation.…”

Section: Harmonic Plane Decompositionmentioning

confidence: 99%

“…While ( 9) describes the current references in steady state, the pole change poses a transient situation with more than one harmonic plane excited simultaneously. Consequently, two harmonic planes p (1) before and p (2) after the pole transition contain current space-vectors on circular trajectories īαβ0,p (1) and īαβ0,p (2) during the pole transition simultaneously. The amount of available harmonic planes for regulating the OPF is reduced from nmw 2 − 1 to nmw 2 − 2.…”

Section: B Post Fault Controllermentioning

confidence: 99%

“…The amount of available harmonic planes for regulating the OPF is reduced from nmw 2 − 1 to nmw 2 − 2. The solution for current space vectors in the non-excited harmonic planes īαβ0,h̸ =p (1) ̸ =p (2) now consists of two parts as shown in (11).…”

Section: B Post Fault Controllermentioning

confidence: 99%

“…[1] offers an analysis of the exact areas of operation in such a VPP with respect to which number of pole-pairs is to be chosen. A design study of a simpler VPP in [2] shows that VPPs can achieve the same operation area with a smaller machine.…”

Section: Introductionmentioning

confidence: 99%

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Pole Transition Under Open Phase Fault Conditions in a Variable Pole Machine

Wu,

Peretti

2023

IECON 2023- 49th Annual Conference of the IEEE Industrial Electronics Society

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A special subcategory of multiphase electrical machines are the so called variable phase-pole machines. They have the ability to electronically change the number of polepairs without any hardware reconfiguration. Moreover, they are inherently fault tolerant due to the higher number of independent windings. These two virtues offer new possibilities for a drivetrain with higher power density and a new level of reliability. This paper presents an adapted post-fault controller performing a pole transition with an open-phase fault. The drive changes the number of pole-pairs without loosing the torque during the transition and minimizes the stator copper losses simultaneously. The validity of the presented control is shown in simulations.

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Section: Harmonic Plane Decompositionmentioning

confidence: 99%

Section: B Post Fault Controllermentioning

confidence: 99%

Section: B Post Fault Controllermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Pole Transition Under Open Phase Fault Conditions in a Variable Pole Machine

Wu,

Peretti

2023

IECON 2023- 49th Annual Conference of the IEEE Industrial Electronics Society

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“…The presented VPPs in [8], [11] have nine-phases and allow two PPCs: [m = 3, p = 6] and [m = 9, p = 2]. Reference [14] presents, based on the drive cycle of a heavy-duty electric vehicle, a similar design with two PPCs, [m = 3, p = 3] and [m = 9, p = 1], and shows the potential increase in power density as compared to a conventional three-phase machine. Although it is possible to create a VPP with six phases, it is not recommended due to high lateral forces on the bearings during the pole transition in a change from odd to even number of pole pairs as [10] illustrates.…”

Section: Introductionmentioning

confidence: 99%

Open Fault Detection in Variable Phase-Pole Machines Based on Harmonic Plane Decomposition

Wu,

Olson,

Henriksson

et al. 2024

IEEE Trans. Power Electron.

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Multiphase electrical machines are inherently fault tolerant due to the higher number of phases. An important step in achieving a fault tolerant control is the ability to detect and identify the fault. In variable phase-pole drives, which are a class of multiphase machines that change the number of pole pairs during real-time operation, there are further unexplored possibilities. Based on the harmonic plane decomposition theory for variable phase-pole machines, a fault detection and identification algorithm is proposed, which analyzes the spatial harmonics of the current distribution. The fault detection is fast, operation independent, non-invasive, parameter-insensitive, and computationally simple. Experimental tests validate the proposed method.

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