Analysis of Capacitor Voltage Balancing Method of Modular Multilevel Converter (MMC) for the Application of SPWM, NLC &amp; SHE-PWM Modulation Techniques

Bonde, Akshaya D.; Meshram, P. M.; Borghate, Vijay B.; Gobburi, Hari Babu

doi:10.1109/stpec49749.2020.9297688

Cited by 7 publications

(4 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Reference V n re f is then injected into an algorithm that provides near level control of each capacitor's voltage [40], allowing decentralized control and reducing computing time when compared to other methods [41,42]. The operating mode of this sorting method can be summarized by Equation (15):…”

Section: Capacitors Balancingmentioning

confidence: 99%

Investigation of a 25 kV–50 Hz Railway-Substation Power Supply Based on a Back-to-Back Modular Multilevel Converter Topology

Tournoux,

Houari,

Benkhoris

et al. 2024

Energies

View full text Add to dashboard Cite

This paper presents a preliminary study of a 25 kV–50 Hz railway substation power supply system. The control of a back-to-back converter based on modular multilevel converter (MMC) technology was investigated to fit with the power quality requirements of the application. One of the main challenges is the presence of constraining load conditions, under which the train circulation variability, low-frequency harmonics and critical power transients can notably decrease the power quality and lead to instability. In order to address this, cascaded controllers based on resonant controllers are proposed to ensure the desired performance. Furthermore, balancing voltage algorithms are added to avoid stress phenomena and additional losses in the studied power conversion interface. The paper presents the design of the control stages and demonstrates the robust performance of the system using a realistic loading condition of a railway substation.

show abstract

Section: Capacitors Balancingmentioning

confidence: 99%

Investigation of a 25 kV–50 Hz Railway-Substation Power Supply Based on a Back-to-Back Modular Multilevel Converter Topology

Tournoux,

Houari,

Benkhoris

et al. 2024

Energies

View full text Add to dashboard Cite

show abstract

“…To generate the PWM pulses for N HBSMs conventionally, the triangular carrier of each SM and modulating signal are compared. 13,15,17,18 The proposed approach compares the PWM reference with the SM numbers in the range of 1 to N.…”

Section: Generation Of Pwm Pulsesmentioning

confidence: 99%

“…12 Therefore, the carrier based high-switching frequency methods such as phase disposition PWM (PDPWM) and phase-shifted carrier PWM (PSCPWM) are the alternative and widely applied on MMCs. [13][14][15][16][17][18] The PDPWM has better harmonic performance but suffers from uneven power distribution. 19 This is solved by sorting the capacitors and generated 2N + 1 levels.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A level enhanced voltage balancing method for modular multilevel converter without using sensors

Gobburi

Borghate

Meshram

2022

Circuit Theory & Apps

View full text Add to dashboard Cite

The intrinsic characteristics such as modular structure, filterless operation, and absence of DC-link capacitor have made the modular multilevel converter (MMC) superior to the conventional multilevel converters. However, the submodule (SM) capacitor voltage balancing is crucial. This paper presents a voltage balance control method for MMC. The proposed method generates 2N + 1 levels (where N is the number of SMs per arm) which halves the step size of output voltage and improves the harmonic performance as compared to N + 1 level generation. It requires only one carrier per phase and no voltage and current measurements are needed for the implementation. Therefore, the proposed method makes the system cost-effective and reduces the implementation issues related with carrier-based methods substantially. It also alleviates the non-uniform charge distribution problem with the phase disposition pulse width modulation (PDPWM) technique. Further, a detailed mathematical analysis is presented which enhances the understanding of balancing algorithm. In addition to this, the circulating current with 2N + 1 modulation is analyzed and a control technique is presented. The proposed voltage balancing method is simulated comprehensively in MATLAB/SIMULINK software and validated by the experimental results obtained from a laboratory prototype.

show abstract

Control of a Back-to-Back Modular Multilevel Matrix Converter for Low Frequency AC Transmission

Ravet Orellana,

Diaz,

Rodríguez Contreras

et al. 2023

2023 IEEE CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies (CHILECON)

View full text Add to dashboard Cite

Analysis of Capacitor Voltage Balancing Method of Modular Multilevel Converter (MMC) for the Application of SPWM, NLC & SHE-PWM Modulation Techniques

Cited by 7 publications

References 19 publications

Investigation of a 25 kV–50 Hz Railway-Substation Power Supply Based on a Back-to-Back Modular Multilevel Converter Topology

Investigation of a 25 kV–50 Hz Railway-Substation Power Supply Based on a Back-to-Back Modular Multilevel Converter Topology

A level enhanced voltage balancing method for modular multilevel converter without using sensors

Control of a Back-to-Back Modular Multilevel Matrix Converter for Low Frequency AC Transmission

Contact Info

Product

Resources

About