Assessment of a Nine-Phase Induction Motor Drive for Metal Industry Applications

Bastos, Rodrigo R.; Souza, Tamires Santos de; Carvalho, Marcelo Moreira de; Silva, Leonardo Adolpho R.; Filho, Braz J. Cardoso

doi:10.1109/tia.2020.3023061

Cited by 10 publications

(4 citation statements)

References 40 publications

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“…The most common types of nphase machines and their potential NPs are considered. Among the motors that may have n/l NPs, only l = 3 is taken into account, since it is preferred in industrial applications [30], [31]. Space harmonics are neglected.…”

Section: Assessment Of Current Thd In Multiple Casesmentioning

confidence: 99%

A Generalized Overmodulation Strategy With Minimum Current Distortion for Symmetrical and Asymmetrical Multiphase Induction Motor Drives

Medina-Sánchez,

Yepes,

López

et al. 2024

IEEE Trans. Power Electron.

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Multiphase machines are a promising alternative for high-reliability applications. In these applications, overmodulation (OVM) is important since it allows attaining higher modulation indices by injecting, besides zero-sequence voltage harmonics, current-producing ones. In general, the existing techniques are able to limit to some extent the current total harmonic distortion (THD). However, most do not ensure the minimum current THD, thereby not guaranteeing the minimum harmonic stator copper loss. Furthermore, most are intended just for particular phase numbers n, symmetrical/asymmetrical winding arrangements and neutral-point (NP) configurations. OVM with low THD remains unaddressed in most types of multiphase motors. This paper overcomes these limitations by proposing a generalized OVM strategy that attains the minimum current THD in induction motors with any n, winding arrangement and NP configurations. Two techniques are outlined. One of them injects only non-torque-related harmonics, while the other technique exploits torque-producing harmonics to further reduce the current THD and to attain modulation indices up to square waveform. The superiority of the proposal in terms of current THD is substantiated through studies for multiple kinds of multiphase machines. The experiments are performed by using two six-phase induction motors with symmetrical/asymmetrical windings when 1 and 2 NPs are set.

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Section: Assessment Of Current Thd In Multiple Casesmentioning

confidence: 99%

A Generalized Overmodulation Strategy With Minimum Current Distortion for Symmetrical and Asymmetrical Multiphase Induction Motor Drives

Medina-Sánchez,

Yepes,

López

et al. 2024

IEEE Trans. Power Electron.

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show abstract

“…SC faults in the stator windings can be of the following types (see Figure 1): phase-tophase, phase-to-neutral, or turn-to-turn (also known as turn or interturn faults) [269]. If the stator does not include neutral points (e.g., for full-bridge VSCs), the term "phase-toneutral SC" can be replaced by "phase SC" (more general), for which both terminals of a given phase are shorted [266].…”

Section: Stator Sc Faultsmentioning

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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“…Nowadays, the need of higher power and more reliable applications have promoted the use of multiphase alternating current (AC) drives, e.g. in elevator, electric ship propulsion, electric vehicle, railway traction, and turbo compressor [1]− [12]. Basically, there are only two types of multiphase motors i.e.…”

Section: Introductionmentioning

confidence: 99%

“…The works in [15], [16] have a significant impact on the selected configuration of multiple three-phase motors applied in industry, i.e. mostly the motors are configured to be asymmetric [1]− [12]. The analysis in [15], [16] is suitable for multiphase motor operated under squarewave operation.…”

mentioning

confidence: 99%

Study of current ripple characteristics of inverter-fed multiple three-phase AC motors

Muqorobin

Dahono

2022

IJPEDS

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The need of higher power and more reliable applications have promoted the use of multiphase alternating current (AC) drives. Mostly the motors are used in wide speed operation range. To control the motors, in the low speed region the motors are operated under pulse width modulation (PWM) mode and in the high speed region, they use square wave mode. In this paper, the current ripple characteristics of inverter-fed multiple three-phase AC motors that are operated under dual mode operation (PWM and square wave modes) are investigated. The optimal motor stator winding configuration will be optimized from the viewpoint of inverter input and motor current ripples. Six-phase motor is used as the representative of even-phase motors and nine-phase motor for odd-phase motors. It is found that nine-phase motor is better than six-phase motor if dual mode operation is desired. Experimental results are incorporated to support the analytical results.

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Assessment of a Nine-Phase Induction Motor Drive for Metal Industry Applications

Cited by 10 publications

References 40 publications

A Generalized Overmodulation Strategy With Minimum Current Distortion for Symmetrical and Asymmetrical Multiphase Induction Motor Drives

A Generalized Overmodulation Strategy With Minimum Current Distortion for Symmetrical and Asymmetrical Multiphase Induction Motor Drives

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

Study of current ripple characteristics of inverter-fed multiple three-phase AC motors

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