Universal PWM Modulator for Multiphase Drives With a Minimum Infinity-Norm Approach

Komrska, Tomas; Glasberger, Tomas; Peroutka, Zdeněk

doi:10.1109/tie.2016.2577618

Cited by 20 publications

(19 citation statements)

References 27 publications

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“…A v dc shortage can be straightforwardly detected by monitoring the value of v dc [169], the modulation index [133,138,143,[147][148][149][150][151][152][153][154][155][156][157][158][159], or the speed [141]. The last option may be troublesome when relying on the hypothesis that v dc is constant, because it may not hold in practice.…”

Section: Detection Of Dc-link Voltage Shortagementioning

confidence: 99%

“…Since the machine back-EMF tends to increase with speed, if v dc decreases then the maximum speed and power are reduced as well [141,171]; • If the modulation index increases beyond the linear modulation range, overmodulation occurs. This means that low-order voltage harmonics are introduced, the VSD subspaces become coupled in terms of voltage, and the conventional PWM and control methods are no longer able to work properly [8,9,134,135,[137][138][139]142,143,145,[147][148][149][150][151][152][154][155][156]158,159,167]; • If the VSC ac voltage is reduced, the difference between its magnitude and that of the machine back-EMF may become substantially greater. As a consequence, overcurrent may occur [129,545].…”

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confidence: 99%

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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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Section: Detection Of Dc-link Voltage Shortagementioning

confidence: 99%

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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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“…Supposing the coordinate transformation matrix follows the principle of amplitude equivalence, the 64 fundamental vectors exhibit five different magnitudes on the α-β sub-plane: 0.644Ud (large vectors), 0.4714Ud (medium vectors), 0.2066Ud (small vectors), 0.1725Ud (ultra-small vectors), and 0 (zero vectors), where Ud denotes the DC-bus voltage of inverter. In [15], the traditional three-phase Given a determined inverter topology, a modulation strategy is extremely significant to improve the performance of a certain motor system [7][8][9]. It can be evidently investigated that, the space vector pulse width modulation (SVPWM) is the most widely applied scheme.…”

Section: Introductionmentioning

confidence: 99%

“…The past two decades have witnessed numerous developments of state-of-the-art VSD control strategies, they mainly treat the machine as an integral six-phase system [15][16][17][18][19][20]. Supposing the coordinate transformation matrix follows the principle of amplitude equivalence, the 64 fundamental vectors exhibit five different magnitudes on the α-β sub-plane: 0.644U d (large vectors), 0.4714U d (medium vectors), 0.2066U d (small vectors), 0.1725U d (ultra-small vectors), and 0 (zero vectors), where U d denotes the DC-bus voltage of inverter.…”

Section: Introductionmentioning

confidence: 99%

“…Supposing the coordinate transformation matrix follows the principle of amplitude equivalence, the 64 fundamental vectors exhibit five different magnitudes on the α-β sub-plane: 0.644U d (large vectors), 0.4714U d (medium vectors), 0.2066U d (small vectors), 0.1725U d (ultra-small vectors), and 0 (zero vectors), where U d denotes the DC-bus voltage of inverter. In [15], the traditional three-phase SVPWM was Energies 2018, 11, 2598 3 of 16 directly applied in six-phase motor systems, this method could track reference vectors on α-β sub-plane precisely, but leaving the harmonic elements on z 1 -z 2 sub-plane unconsidered. Innovatively, a classical VSD-base SVPWM strategy (hereafter is referred to C-SVPWM) was proposed to limit the 5th, 7th, 17th, 19th .…”

Section: Introductionmentioning

confidence: 99%

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Optimal Modeled Six-Phase Space Vector Pulse Width Modulation Method for Stator Voltage Harmonic Suppression

et al. 2018

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Dual Y shift 30 • six-phase motors are expected to be extensively applied in high-power yet energy-effective fields, and a harmonic-suppressing control strategy plays a vital role in extending their prominent features of low losses and ultra-quiet operation. Aiming at the suppression of harmonic voltages, this paper proposes a six-phase space vector pulse width modulation method based on an optimization model, namely OM-SVPWM. First, four adjacent large vectors are employed in each of 12 sectors on a fundamental sub-plane. Second, the optimization model is constructed to intelligently determine activation durations of the four vectors, where its objective function aims to minimize the synthesis result on a harmonic sub-plane, and its constraint condition is that the synthesis result on the fundamental sub-plane satisfies a reference vector. Finally, to meet the real-time requirement, optimum solutions are obtained by using general central path following algorithm (GCPFA). Simulation and experiment results prove that, the OM-SVPWM performs around 37% better than a state-of-the-art competitive SVPWM in terms of harmonics suppression, which promise the proposed OM-SVPWM conforms to the energy-effective direction in actual engineering applications.Energies 2018, 11, 2598 2 of 16 As a prominent MMDS, dual Y shift 30 • six-phase motor (DYSM) has gained widespread attention and representative application in high-power yet energy-effective fields, such as electric locomotive traction, ship electric propulsion, wind power generation, etc. [4][5][6]. The stator of a DYSM has an irregular but delicate structure. As shown in Figure 1, the asymmetric six-phase windings of a DYSM are constructed with two sets of three-phase windings, which are arranged with a 30 • spatial electrical angle displacement. This special structure brings the following three typical advantages:(1) With the asymmetric six-phase winding, lower-order harmonic components of the magnetic motive force can be effectively eliminated; (2) With double the number of winding phases, higher power can be transmitted on the same voltage or current level; (3) Continuous operating of DYSMs under phase-deficient conditions is possible. These advantages are highly beneficial to green power and sustainable energy-saving.

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Neural dynamics solver for time-dependent infinity-norm optimization based on ACP framework with robot application

Ma,

Liu,

Shang

2024

Neurocomputing

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Universal PWM Modulator for Multiphase Drives With a Minimum Infinity-Norm Approach

Cited by 20 publications

References 27 publications

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

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

Optimal Modeled Six-Phase Space Vector Pulse Width Modulation Method for Stator Voltage Harmonic Suppression

Neural dynamics solver for time-dependent infinity-norm optimization based on ACP framework with robot application

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