Third Harmonic Current Injection in Different Operating Stages of Five-Phase PMSM With Hybrid Single/Double Layer Fractional-Slot Concentrated Winding

Huang, Jiaxuan; Zheng, Ping; Sui, Yi; Zheng, Jian; Yin, Zuosheng; Cheng, Luming

doi:10.1109/access.2021.3052558

Cited by 22 publications

(12 citation statements)

References 30 publications

(53 reference statements)

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“…The aforementioned solutions for IMs from [133,150], based on a single current frequency, may not seem in principle suitable for synchronous machines, where the time frequencies of the spatial rotor-flux harmonics are necessarily different from the fundamental. In any case, Huang et al [199] show that it is also possible to produce smooth torque in a five-phase PMSM with third-and fifth-order back-EMF harmonics under an open phase, by supplying only fundamental stator current with adequate imbalance. On the other hand, an alternative based on setting first-and third-order stator currents with equal amplitudes in all phases (for each frequency) is devised as well.…”

Section: Consideration Of Space Harmonicsmentioning

confidence: 99%

A Comprehensive Survey on Fault Tolerance in Multiphase AC Drives, Part 2: Phase and Switch Open-Circuit Faults

et al. 2022

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Multiphase machines are very convenient for applications that require high reliability. In this two-part survey, the state of the art about fault tolerance in multiphase drives is reviewed. In Part 1, an overview including numerous fault types was presented, along with fundamental notions about multiphase drives. Here, in Part 2, the focus is placed on phase/switch open-circuit (OC) faults in particular, which have received the most attention in the literature. Phase OC failures involve OCs in stator phases or in converter-machine connections, and switch/diode OCs are frequently dealt with similarly or identically. Thanks to the phase redundancy of multiphase drives, their operation can be satisfactorily continued under a certain number of OCs. Nonetheless, the procedure to follow for this purpose is far from unique. For given OC fault conditions, numerous fault-tolerant possibilities can be found in the literature, each of them with different advantages and disadvantages. Moreover, a great variety of methods have also been devised to detect and diagnose phase/switch OC failures so that, as soon as possible, the most appropriate fault-tolerance measures are applied. Thus, given the broad literature about tolerance to phase/switch OC faults in multiphase drives, the survey presented here is expected to be of great interest for the research community and industry.

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Section: Consideration Of Space Harmonicsmentioning

confidence: 99%

A Comprehensive Survey on Fault Tolerance in Multiphase AC Drives, Part 2: Phase and Switch Open-Circuit Faults

et al. 2022

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“…FSCWs, especially with single layer, offer large self-inductance and high electrical, magnetic, thermal, and mechanical isolation between phases [2,232,266,472]. Consequently, FSCWs are frequently employed without electrical connection between phases (single-phase splitting, without neutral) [26,89,91,96,128,162,240,241,248,263,266,267,365]. For these reasons, FSCWs are particularly convenient when tolerance to stator SCs is sought [240,266], as will be further discussed later.…”

Section: Overlapping and Non-overlapping Windingsmentioning

confidence: 99%

A Comprehensive Survey on Fault Tolerance in Multiphase AC Drives, Part 1: General Overview Considering Multiple Fault Types

et al. 2022

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Multiphase drives offer enhanced fault-tolerant capabilities compared with conventional three-phase ones. Their phase redundancy makes them able to continue running in the event of faults (e.g., open/short-circuits) in certain phases. Moreover, their greater number of degrees of freedom permits improving diagnosis and performance, not only under faults affecting individual phases, but also under those affecting the machine/drive as a whole. That is the case of failures in the dc link, resolver/encoder, control unit, cooling system, etc. Accordingly, multiphase drives are becoming remarkable contenders for applications where high reliability is required, such as electric vehicles and standalone/off-shore generation. Actually, the literature on the subject has grown exponentially in recent years. Various review papers have been published, but none of them currently cover the state-of-the-art in a comprehensive and up-to-date fashion. This two-part paper presents an overview concerning fault tolerance in multiphase drives. Hundreds of citations are classified and critically discussed. Although the emphasis is put on fault tolerance, fault detection/diagnosis is also considered to some extent, because of its importance in fault-tolerant drives. The most important recent advances, emerging trends and open challenges are also identified. Part 1 provides a comprehensive survey considering numerous kinds of faults, whereas Part 2 is focused on phase/switch open-circuit failures.

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“…The so-called bi-harmonic design has been considered in an attempt to achieve a high torque density. In [21], Huang et al considered the design 30-slot 24-pole 5-phase PMSM equipped with hybrid single/double layer fractional-slot concentrated winding applied to electric vehicles. A third harmonic current injection has been considered under healthy and faulty operations.…”

Section: Introductionmentioning

confidence: 99%

Fractional-Slot PMSMs With One Coil Parallel Branches Made Phases—Part I: Investigation Study

et al. 2021

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This work proposes an approach to design fractional-slot permanent magnet synchronous machines (FSPMSMs) equipped with phases made up of one coil parallel branches. These machines exhibit attractive potentialities, especially their enhanced open-circuit fault tolerance capability. Beyond their intrinsic fault tolerance, an open-circuit affecting the targeted topologies leads to a torque step-down limited to the one developed by the concerned coil rather than the torque produced by the total phase in FSPMSMs equipped with phases made up of series-connected coils. Furthermore, these topologies are suitably-adapted to low-voltage power supply that makes them viable candidates in automotive applications. This potentiality is by far vital in battery electric vehicles with the risk of electrocution in case of accident totally-eradicated thanks to the reduction of the DC bus voltage. Part 1 of the developed work is aimed at a star of slots-based identification and topological characterization of the FSPMSMs enabling the arrangement of the armature phases according to one coil parallel branches. The study distinguishes the topologies with odd and even number of phases, arranged in single-and double-layer slots. A case study is treated using a 2D finite element analysis and validated by experiments.INDEX TERMS Fractional-slot permanent magnet synchronous machines, phases arranged in one coil parallel branches, start of slots approach, odd and even number of phases, single-and double-layer slots.

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Third Harmonic Current Injection in Different Operating Stages of Five-Phase PMSM With Hybrid Single/Double Layer Fractional-Slot Concentrated Winding

Cited by 22 publications

References 30 publications

A Comprehensive Survey on Fault Tolerance in Multiphase AC Drives, Part 2: Phase and Switch Open-Circuit Faults

A Comprehensive Survey on Fault Tolerance in Multiphase AC Drives, Part 2: Phase and Switch Open-Circuit Faults

A Comprehensive Survey on Fault Tolerance in Multiphase AC Drives, Part 1: General Overview Considering Multiple Fault Types

Fractional-Slot PMSMs With One Coil Parallel Branches Made Phases—Part I: Investigation Study

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