<scp>MMC‐HVDC</scp>
            system oscillation suppression control strategy based on state feedback decoupling control

Yang, Yu; Cheng, Xuezhen; Zhang, Chao; Ji, Xingquan

doi:10.1002/2050-7038.12616

Cited by 4 publications

(2 citation statements)

References 21 publications

(20 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The grid voltages and line currents are measured and the positive and negative components are separated and transformed into their dq component using PLL. Then i ± dq are introduced to current controller, in this case a Dual Synchronously Rotating Reference Frame (DSRF) current controllers is proposed to control both positive and negative sequence currents [38]- [42]. It consists of two identical vector current controllers for positive and negative sequence currents.…”

Section: Instantaneous Active Reactive Control (Iarc)mentioning

confidence: 99%

Effect of Power Oscillations Suppression Strategy on the Internal Behavior of MMC-HVDC During Unbalanced Grid Conditions

Fawzi

Elsanabary

Mekhilef

2023

Preprint

View full text Add to dashboard Cite

Modular Multilevel Converter based High Voltage Direct Current (MMC-HVDC) transmission systems are becoming a well-established technology in transmitting electrical power over very long distances. However, the performance of these systems under unbalanced grid conditions still faces challenging problems. One of the most important control targets is to eliminate the 2nd harmonic power oscillations by selecting the suitable set of current references. Among different power oscillation suppression techniques, Positive Negative Sequence Control (PNSC) and Instantaneous Active and Reac-tive Control (IARC) are considered the most important. However, it is found that, only PNSC is usually considered in all of the references that studied the internal behaviour of MMC during unbalanced conditions when power oscillation suppression is targeted. This is because IARC injects odd harmonics in line currents which results in distorted arm currents and energies among the phases. This paper aims to study the behaviour of the MMC internal variables in case of using IARC. A detailed harmonic analysis of the MMC internal currents and energies is provided. The system is simulated using Matlab-Simulink and validated using HiL technology under different unbalanced grid conditions. The obtained results are then evaluated and compared to that of PNSC to highlight the major differences. It is found that, IARC strategy is more powerful in suppressing power oscillations with simpler structure but with the cost of higher harmonic contents of internal currents and arm energies compared to PNSC strategy. Also, a modified internal energy controller using low pass filters instead of notch filters to eliminate higher order harmonics in the circulating current is proposed in this paper.

show abstract

Section: Instantaneous Active Reactive Control (Iarc)mentioning

confidence: 99%

Effect of Power Oscillations Suppression Strategy on the Internal Behavior of MMC-HVDC During Unbalanced Grid Conditions

Fawzi

Elsanabary

Mekhilef

2023

Preprint

View full text Add to dashboard Cite

show abstract

“…Nowadays, the MMC system is adopted in the Zhoushan MTDC project, Xiamen ±320 kv DC project, Luxi HVDC project, and Zhangbei DC project. It is noteworthy that the MMCs in all of these projects adopt conventional MMC with half‐bridge submodules (HBSMs) 3‐5 …”

Section: Introductionmentioning

confidence: 99%

A level adjustment–based fault‐tolerant control strategy for hybrid MMC

Liu

Jin

Jun

et al. 2021

Int Trans Electr Energ Syst

View full text Add to dashboard Cite

Summary With the capability of DC fault ride‐through and the reduced cost, the hybrid modular multilevel converter (HMMC) is a promising topology for high‐voltage direct current (HVDC) applications. However, the complicated configuration of HMMCs with a large number and different types of submodules (SM) increases the risk of submodule failure. This paper proposes a novel HMMC submodule fault‐tolerant strategy by adjusting the number of inserted SMs of faulty phases. Then, based on the analysis of the SM voltage fluctuation, an SM capacitor voltage controller matched in coordination with the fault‐tolerant strategy is designed. By utilizing the negative voltage output full‐bridge submodules (FBSMs), this strategy can significantly improve the SM fault‐tolerant capability of the HMMC. Moreover, as compared to conventional fault‐tolerant strategies, the proposed strategy requires fewer components and can be easily implemented. Finally, the feasibility and performance of the proposed strategy are verified by the MATLAB/Simulink simulation experiment under different fault conditions and MMC systems.

show abstract

BPA based Selection Method for MMC Reactive Power Control Mode

Xiao

Wang

et al. 2021

2021 3rd Asia Energy and Electrical Engineering Symposium (AEEES)

View full text Add to dashboard Cite

MMC‐HVDC system oscillation suppression control strategy based on state feedback decoupling control

Cited by 4 publications

References 21 publications

Effect of Power Oscillations Suppression Strategy on the Internal Behavior of MMC-HVDC During Unbalanced Grid Conditions

Effect of Power Oscillations Suppression Strategy on the Internal Behavior of MMC-HVDC During Unbalanced Grid Conditions

A level adjustment–based fault‐tolerant control strategy for hybrid MMC

BPA based Selection Method for MMC Reactive Power Control Mode

Contact Info

Product

Resources

About