Design Method of Laboratory-Scale MMC Physical Simulation System Considering Multiharmonic Simulation Accuracy

Pang, Hui; Liu, Dong; Kou, Longze; Gu, Huaiguang; Mi, Zhiwei

doi:10.1109/jestpe.2021.3084248

Cited by 1 publication

(2 citation statements)

References 21 publications

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“…The series side equivalent inductance req L is the sum of the line inductance on series side and the half of bridge arm inductance. 1 R is line resistance on the series side and rk i is line current on the series side. Considering the presence of transformers on the series side, when the voltage ratio is m, r 1…”

Section: B Mathematical Model Of Mmc-upqcmentioning

confidence: 99%

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Power Quality Compensation Strategy of MMC-UPQC Based on Passive Sliding Mode Control

Jiang

Zhang

2023

IEEE Access

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While the unified power quality conditioner based on modular multilevel converter (MMC-UPQC) can be used for recovering power quality of voltage and current in high voltage grids, it is difficult to manage the power quality when the grid voltage imbalance is large. In this paper, a passivity based control (PBC) combined with sliding mode control (SMC) is proposed for MMC-UPQC to improve the power quality under the unbalance of grid voltage in power systems. First, according to the structure of MMC-UPQC, the equivalent mathematical model is presented for unbalanced power grids. Second, the detection quantity is separated without phase-locked loop using a method of positive and negative sequence separation. Furthermore, a passive sliding mode control (PSMC) strategy is designed and applied to a multilevel and high voltage power quality compensation system. The proposed controller can improve the control accuracy of system parameters, response speed, and compensation effectiveness. Finally, the MATLAB/Simulink simulation and the real time laboratory (RT-LAB) based hardware-in-the-loop (HIL) experimental results show that the proposed PSMC strategy can compensate voltage and current rapidly and accurately, and the controller has strong robustness against system parameter changes.INDEX TERMS Modular multilevel converter, passivity based control, sliding mode control, unbalanced grid voltage, unified power quality regulator.

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Section: B Mathematical Model Of Mmc-upqcmentioning

confidence: 99%

“…Since the advent of the modular multilevel converter (MMC) [1], it has been increasingly studied and applied in various fields. Specifically, large level numbers and common direct current (DC) side make the MMC very suitable for application in DC transmission [2], [3].…”

Section: Introductionmentioning

confidence: 99%

Power Quality Compensation Strategy of MMC-UPQC Based on Passive Sliding Mode Control

Jiang

Zhang

2023

IEEE Access

View full text Add to dashboard Cite

show abstract

Design Method of Laboratory-Scale MMC Physical Simulation System Considering Multiharmonic Simulation Accuracy

Cited by 1 publication

References 21 publications

Power Quality Compensation Strategy of MMC-UPQC Based on Passive Sliding Mode Control

Power Quality Compensation Strategy of MMC-UPQC Based on Passive Sliding Mode Control

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