Analysis of the Phase-Shifted Carrier Modulation for Modular Multilevel Converters

Li, Binbin; Yang, Rongfeng; Xu, Dingbang; Wang, Gaolin; Wang, Wei; Xu, Dianguo

doi:10.1109/tpel.2014.2299802

Cited by 346 publications

(180 citation statements)

References 37 publications

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“…As evident in Equation (10), the reference signals of the proposed PWM can be changed by input and arm parameters of MMC as well as input voltages and currents characteristics. Considering the reference values of I * mk , v * m and α * k as input currents and voltages, the proposed modulation index can be written as:…”

Section: Analysis Of Proposed Modulation Functionmentioning

confidence: 99%

A Novel Modulation Function-Based Control of Modular Multilevel Converters for High Voltage Direct Current Transmission Systems

Mehrasa

Pouresmaeil

Zabihi³

et al. 2016

Energies

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Abstract:In this paper, a novel modulation function-based method including analyses of the modulation index and phase is proposed for operation of modular multilevel converters (MMCs) in high voltage direct current (HVDC) transmission systems. The proposed modulation function-based control technique is developed based on thorough and precise analyses of all MMC voltages and currents in the a-b-c reference frame in which the alternating current (AC)-side voltage is the first target to be obtained. Using the AC-side voltage, the combination of the MMC upper and lower arm voltages is achieved as the main structure of the proposed modulation function. The main contribution of this paper is to obtain two very simple new modulation functions to control MMC performance in different operating conditions. The features of the modulation function-based control technique are as follows: (1) this control technique is very simple and can be easily achieved in a-b-c reference frame without the need of using Park transformation; and (2) in addition, the inherent properties of the MMC model are considered in the proposed control technique. Considering these properties leads to constructing a control technique that is robust against MMC parameters changes and also is a very good tracking method for the components of MMC input currents. These features lead to improving the operation of MMC significantly, which can act as a rectifier in the HVDC structure. The simulation studies are conducted through MATLAB/SIMULINK software, and the results obtained verify the effectiveness of the proposed modulation function-based control technique.

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Section: Analysis Of Proposed Modulation Functionmentioning

confidence: 99%

A Novel Modulation Function-Based Control of Modular Multilevel Converters for High Voltage Direct Current Transmission Systems

Mehrasa

Pouresmaeil

Zabihi³

et al. 2016

Energies

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“…Among all of the modulation methods for multilevel converters, the most widely used methods are as follows: Level-Shifted Carrier (LSC) PWM, Phase-Shifted Carrier (PSC) PWM [6], Selective Harmonic Elimination (SHE) [7], and Nearest Level Control (NLC) [8]. Fig.…”

Section: Introductionmentioning

confidence: 99%

An Improved Phase-Shifted Carrier PWM for Modular Multilevel Converters with Redundancy Sub-Modules

Choi¹,

Han²

2016

Journal of Power Electronics

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In this paper, the PSC PWM method is chosen as the optimal modulation method for a 20MW VSC HVDC, with consideration of the harmonic distortion of the output voltage, the switching frequency, and the control implementation difficulty. In addition, a new PSC PWM method is proposed in order to achieve an easy application and to solve the redundant control problems encountered in the previous PSC PWM method. To verify the proposed PSC PWM method, PSCAD/EMTDC simulations for an 11-level MMC RTDS HILS test and an 11-level MMC prototype converter test were performed. As can be seen from the results of these tests, the proposed PSC PWM method shows good results in an 11-level MMC with redundant sub-modules.

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“…This approach is widely used because it makes MMC modulation generalisation simpler than that in [5,7,8]. The use of phase-shifted carriers pulse width modulation (PS-PWM) for MMC, where each cell is controlled independently, including regulation of the cell capacitor voltages is discussed in [10,11]. This approach generates high quality output voltage at a reduced switching frequency per cell, and simplifies the overall MMC control as the time consumed for cell capacitor voltage sorting is not needed.…”

Section: Introductionmentioning

confidence: 99%

Enhanced control strategy of full-bridge modular multilevel converter

Adam

Finney

Williams

2015

2015 International Conference on Renewable Energy Research and Applications (ICRERA)

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Analysis of the Phase-Shifted Carrier Modulation for Modular Multilevel Converters

Cited by 346 publications

References 37 publications

A Novel Modulation Function-Based Control of Modular Multilevel Converters for High Voltage Direct Current Transmission Systems

A Novel Modulation Function-Based Control of Modular Multilevel Converters for High Voltage Direct Current Transmission Systems

An Improved Phase-Shifted Carrier PWM for Modular Multilevel Converters with Redundancy Sub-Modules

Enhanced control strategy of full-bridge modular multilevel converter

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