A Simplified Space Vector Modulation Scheme for Multilevel Converters

Deng, Yi; Wang, Yebin; Teo, Koon Hoo; Harley, R.G.

doi:10.1109/tpel.2015.2429595

Cited by 121 publications

(76 citation statements)

References 45 publications

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“…The input to the algorithm is the voltage to be generated and the output is three vectors corresponding to inverter voltages, for example (000) (100) (110), and the time each needs to be applied. As the number of levels increases, the number of values that can take the converter voltage grows exponentially, so the selection of the three vectors of the inverter output voltage is more difficult [24][25][26][27][28][29]. Figure 8 presents the basics of the multilevel SVM for the case of six levels.…”

Section: Multilevel Svmmentioning

confidence: 99%

Modular Multilevel Converters: Control and Applications

et al. 2017

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This review article is mainly oriented to the control and applications of modular multilevel converters (MMC). The main topologies of the switching modules are presented, for normal operation and for the elimination of DC faults. Methods to keep the capacitor voltage balanced are included. The voltage and current modulators, that are the most internal loops of control, are detailed. Voltage control and current control schemes are included which regulate DC link voltage and reactive power. The cases of unbalanced and distorted networks are analyzed, and schemes are proposed so that MMC contribute to improve the quality of the grid in these situations. The main applications in high voltage direct current (HVDC) transmission along with other medium voltage (MV) and low voltage (LV) applications are included. Finally, the application to offshore wind farms is specifically analyzed.

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Section: Multilevel Svmmentioning

confidence: 99%

Modular Multilevel Converters: Control and Applications

et al. 2017

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“…Among the three nearest vectors, one of them should have an even number of redundant switching states and should be realized by applying two of these redundant switching states for the same amount of time. Thus, this strategy requires several steps: the selection of the three nearest vectors, the vector dwell-time calculation, and the duty-cycle calculation for each switch [17], [22], [23], [26], [27]. To perform these steps, several techniques are proposed [17]- [19], [22]- [23].…”

Section: Ieee Transactions On Industrial Electronicsmentioning

confidence: 99%

A Novel Approach to Generate Effective Carrier-Based Pulsewidth Modulation Strategies for Diode-Clamped Multilevel DC–AC Converters

Maheshwari

Busquets‐Monge

Nicolás-Apruzzese

2016

IEEE Trans. Ind. Electron.

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Abstract-Several pulsewidth modulation (PWM) strategies have been proposed for three-phase multilevel converters. Typically, these PWM methods can be either space-vector or carrier-based implemented, where the carrier-based implementation usually presents a lower computation complexity. In this paper, a novel approach for the carrierbased implementation of different existing PWM methods is proposed for three-and four-level dc-ac converters, which can be easily extended to any number of levels. The main features of the proposed approach are its reduced computation complexity and computation time. On the other hand, the proposed approach suggests the derivation of novel PWM strategies which can potentially present improved performance features. As an example, two new discontinuous PWM (DPWM) strategies are proposed for the four-level converter. One of these DPWM strategies presents lower weighted total harmonic distortion than other previously proposed strategies. Simulation and experimental results verify the effectiveness of the proposed approach and novel DPWM strategies.

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“…Many academic papers have focused on modeling [16][17][18][19], control [20][21][22][23][24], and modulation techniques [25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41] for MMCs. The multilevel converter pulse width modulation technique is one of the key technologies for MMCs as it affects the harmonic characteristics, voltage balancing and system efficiency.…”

Section: Introductionmentioning

confidence: 99%

“…However, when the number of voltage levels increases, the complexity of the algorithm for SVM grows exponentially [4]. In [30], a simplified SVM scheme was proposed for MMCs, which reduces the computation demands and can be used for any level MMC. The main advantage of the nearest level modulation (NLM) method is its simple implementation.…”

Section: Introductionmentioning

confidence: 99%

Double-Carrier Phase-Disposition Pulse Width Modulation Method for Modular Multilevel Converters

Zhou

Luo

et al. 2017

Energies

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Modular multilevel converters (MMCs) have become one of the most attractive topologies for high-voltage and high-power applications. A double-carrier phase disposition pulse width modulation (DCPDPWM) method for MMCs is proposed in this paper. Only double triangular carriers with displacement angle are needed for DCPDPWM, one carrier for the upper arm and the other for the lower arm. Then, the theoretical analysis of DCPDPWM for MMCs is presented by using a double Fourier integral analysis method, and the Fourier series expression of phase voltage, line-to-line voltage and circulating current are deduced. Moreover, the impact of carrier displacement angle between the upper and lower arm on harmonic characteristics is revealed, and further the optimum displacement angles are specified for the circulating current harmonics cancellation scheme and output voltage harmonics minimization scheme. Finally, the proposed method and theoretical analysis are verified by simulation and experimental results.

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A Simplified Space Vector Modulation Scheme for Multilevel Converters

Cited by 121 publications

References 45 publications

Modular Multilevel Converters: Control and Applications

Modular Multilevel Converters: Control and Applications

A Novel Approach to Generate Effective Carrier-Based Pulsewidth Modulation Strategies for Diode-Clamped Multilevel DC–AC Converters

Double-Carrier Phase-Disposition Pulse Width Modulation Method for Modular Multilevel Converters

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