Voltage Vector Approximation Control of Multistage—Multilevel Inverter Using Simplified Logic Implementation

Menshawi, Menshawi K.; Kadir, Mohamad N. Abdul; Mekhilef, Saad

doi:10.1109/tii.2012.2235072

Cited by 18 publications

(5 citation statements)

References 30 publications

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“…Second category comprises of three major switching strategies so called ‘optimised harmonic stepped waveform’ [22], ‘selective harmonic mitigation PWM’ [23] and ‘optimal minimisation of the THD’ [24]. Some other control methods of multilevel inverters such as digital control [25] and voltage vector approximation control [26] are discussed in recently published articles. In this paper, SPWM strategy is employed for the presented inverter.…”

Section: Introductionmentioning

confidence: 99%

Symmetric and asymmetric transformer based cascaded multilevel inverter with minimum number of components

Farakhor

Ahrabi

Ardi

et al. 2015

IET Power Electronics

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In this study, a novel transformer based cascaded multilevel inverter is presented. The proposed inverter can operate in both symmetric and asymmetric topologies. The presented inverter benefits from the advantages such as reduced number of power switches and reduced total peak inverse voltage of the switching components. The numbers of insulated gate driver circuits are also decreased with respect to the power switches. Furthermore, the presented topology requires just a single DC source. In addition, the numbers of on-state switches in the current paths are reduced. Therefore the voltage drops across the switches are mitigated and as a result the efficiency of the presented inverter is improved. The mentioned advantages cause the implementation cost to be reduced. The operation of the converter is discussed thoroughly for both symmetric and asymmetric operations. The feasibility of the presented inverter topology is validated using the simulation results. Experimental results under 1.5 kW are also added to justify the theoretical analyses.

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Section: Introductionmentioning

confidence: 99%

Symmetric and asymmetric transformer based cascaded multilevel inverter with minimum number of components

Farakhor

Ahrabi

Ardi

et al. 2015

IET Power Electronics

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“…Since the aim of UC is to provide additional power during acceleration or to recuperate energy from braking, their voltage will vary depending on state of charge. This results in available voltage vectors coordinates being not constant and the traditional Space Vector Modulation (SVM) for multilevel inverters cannot be implemented [18][19][20]. In Fig.2 examples of vectors coordinates for three different voltage ratios between inverter sources.…”

Section: Topology Of Inverter Motor Drivementioning

confidence: 99%

Control Strategy for a Modified Cascade Multilevel Inverter With Dual DC Source for Enhanced Drivetrain Operation

Bendyk

Luk

Alkhafaji

2017

IEEE Trans. on Ind. Applicat.

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This paper presents a new control strategy for a modified cascade multilevel inverter used in drivetrain operations. The proposed inverter is a three-phase bridge with its dc link fed by a dc source (battery), and each phase seriesconnected respectively to an H-bridge fed with a floating dc source (ultracapacitor). To exploit the potentials of the inverter for enhanced drivetrain performance, a sophisticated yet efficient modulation method is proposed to optimise energy transfer between the dc sources and with the load (induction motor) during typical operations, and to minimise switching losses and harmonics distortion. Detailed analysis of the proposed control method is presented, which is supported by experimental verifications.

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“…Multi-phase motors received considerable attention lately thanks to the unique characteristics of higher fault tolerance, smaller torque ripples, advanced control strategies and the rapid development of the multilevel inverters [1][2][3][4][5][6]. Among these multiphase motors, ADT_PMSM can have the advantages of multi-phase machines [3].…”

Section: Introductionmentioning

confidence: 99%

Vector Control of Asymmetric Dual Three-Phase PMSM in Full Modulation Range

Zhu

et al. 2020

IEEE Access

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The total control range of asymmetric dual three-phase permanent magnet synchronous motor (ADT_PMSM) is divided into three different segments by voltage modulation range and current control dimensions and respective control strategies to get the injected voltages in harmonic subspace for three segments are presented in this paper. The three segments are sinusoidal current modulation region, sinusoidal voltage modulation region and overmodulation region. In sinusoidal current modulation region, resonant controller is adopted in the harmonic subspace to calculate the injected voltages, which can compensate the effect of six-phase voltage source inverter (VSI) dead time for two sets of three-phase windings and takes the pole correction into consideration. In sinusoidal voltage modulation region, open loop control strategy in harmonic subspace is adopted. Overmodulation region 1 and 2 are defined in overmodulation region, and the harmonic voltages which are injected into harmonic subspace to extend the modulation index are calculated based on superposition principle and VSD theory. In order to achieve smooth transition from different regions, a novel space vector pulse width modulation (SVPWM) technique for ADT_PMSM is proposed. The experimental results demonstrate the validity and feasibility of the suggested control approach.

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Voltage Vector Approximation Control of Multistage—Multilevel Inverter Using Simplified Logic Implementation

Cited by 18 publications

References 30 publications

Symmetric and asymmetric transformer based cascaded multilevel inverter with minimum number of components

Symmetric and asymmetric transformer based cascaded multilevel inverter with minimum number of components

Control Strategy for a Modified Cascade Multilevel Inverter With Dual DC Source for Enhanced Drivetrain Operation

Vector Control of Asymmetric Dual Three-Phase PMSM in Full Modulation Range

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