Selective harmonic elimination pulse‐width modulation of modular multilevel converters

Konstantinou, Georgios; Ciobotaru, Mihai; Agelidis, Vassilios G.

doi:10.1049/iet-pel.2012.0228

Cited by 180 publications

(101 citation statements)

References 38 publications

(77 reference statements)

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“…The total number of levels in the output of the converter is also equal to N + 3 if the SMs in the upper and lower arm switch concurrently or 2N + 5 in the case of interleaved operation of the MMC [26].…”

Section: Circuit Configuration Operation Principles and Modelmentioning

confidence: 99%

A Hybrid Modular Multilevel Converter with Partial Embedded Energy Storage

et al. 2016

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Modular and cascaded multilevel converters provide a functional solution for the integration of energy storage systems (ESSs). This paper develops a hybrid multilevel converter based on the modular multilevel converter (MMC) that can be functionally extended with partial embedded ESS as a fraction of the overall converter power rating. The configuration, which can operate as a typical DC-AC converter, enables multi-directional power flow between the DC-and AC-side of the converter, as well as the embedded energy storage elements. The use of a three-phase flying-capacitor submodule eliminates the second-order harmonic oscillations present in modular cascaded multilevel converters. Current, voltage and power control are discussed in the paper while simulation results illustrate the operation of the hybrid MMC as a DC-AC converter in a typical inverter application and the additional functions and control of the embedded ESS.

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Section: Circuit Configuration Operation Principles and Modelmentioning

confidence: 99%

A Hybrid Modular Multilevel Converter with Partial Embedded Energy Storage

et al. 2016

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“…Based on it, the research effort toward control has increased. They focus on the pulse-width modulation (PWM) techniques [12][13][14], SM capacitor voltage balancing [15][16][17], circulating current control [18][19][20] and the SM capacitor voltage ripple reduction techniques [21][22][23]. There are also some works discussing the power loss calculation [24,25].…”

Section: Introductionmentioning

confidence: 99%

Reliability Model of MMC Considering Periodic Preventive Maintenance

Wang

Bie

et al. 2017

IEEE Trans. Power Delivery

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Abstract-Periodic preventive maintenance (PPM) is a significant measure to assure reliable operation of the modular multilevel converter (MMC), but to date has always been neglected in the reliability evaluation. A mathematical reliability model of MMC considering PPM is proposed in this paper. The model is derived rigorously by the reliability function and finally described by the indices equivalent failure rate and the forced outage rate (FOR). Two operation modes related to redundant SMs are considered and described by the standby model and k-out-of-n model respectively. Employing this model, we can analyze the sensitivity of reliability to redundancy and maintenance interval and provide some reliability indices for planning, which is especially valuable for the offshore cases. The necessity of the considering PPM and the effectiveness of the proposed model are verified by case studies. A method to include PPM in reliability modeling is provided.

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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%

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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Selective harmonic elimination pulse‐width modulation of modular multilevel converters

Cited by 180 publications

References 38 publications

A Hybrid Modular Multilevel Converter with Partial Embedded Energy Storage

A Hybrid Modular Multilevel Converter with Partial Embedded Energy Storage

Reliability Model of MMC Considering Periodic Preventive Maintenance

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

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