Common-Mode Characterization of a Modular Multilevel Converter in a Megawatt-scale Medium-Voltage DC Test Bed

Wang, L.; Bosworth, Matthew; Hauer, J.F.; Soto, Dionne; Schoder, Karl; Steurer, M.

doi:10.1109/ests.2019.8847822

Cited by 6 publications

(3 citation statements)

References 13 publications

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“…However, the system was limited to only 10 SMs, so the simulation results were obtained with different software. Several other studies [26][27][28] presented test beds for HVDC systems, but their systems either limited or lacked simulation verification without changing the control algorithm.…”

Section: Comparison With Conventional Methodsmentioning

confidence: 99%

Real-Time Controller Design Test Bench for High-Voltage Direct Current Modular Multilevel Converters

et al. 2020

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Modular multilevel converters (MMCs), with their inherent features and advantages over other conventional converters, have gained popularity and remain an ongoing topic of research. Many scholars have solved issues related to the operation, control, protection, and reliability of MMCs using simulation software and small hardware prototypes. We propose a novel approach for an MMC controller design with real-time systems. By utilizing a key benefit of LabVIEW Multisim co-simulation, an MMC control algorithm that can be deployed on a field-programmable gate array (FPGA) was developed in LabVIEW. The complete circuit was designed in Multisim, and a co-simulation was performed to drive an MMC model. The benefit of this topology is that control algorithms can be designed in a LabVIEW FPGA and tested with the Multisim co-simulation circuit to obtain simulation results. Once the controller works and provides satisfactory results, the same algorithm can be deployed in any NI (National Instruments) FPGA-based controller, like a compact remote input/output (RIO), to control real-time MMCs designed in an NI PCI eXtensions for Instrumentation (PXI) system. This method saves time and provides flexibility for effectively designing control algorithms and implementing them in an FPGA for real-time model implementation.

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Section: Comparison With Conventional Methodsmentioning

confidence: 99%

Real-Time Controller Design Test Bench for High-Voltage Direct Current Modular Multilevel Converters

et al. 2020

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“…In the 3-phase MMC, CMV is equally important as DMV, which is the excitation source of ground leakage current and essential to grounding fault investigation [22], [28]. The v CM is derived by (15), in which the harmonics are 6n + 3 times fundamental sideband components around 2Nm times carrier multiples.…”

Section: Analytical Solution For a Three-phase MMCmentioning

confidence: 99%

“…FSU-CAPS is equipped with a multi-functional MW-scale MVDC testbed comprised of four 1.25 MW full-bridge MMCs. The details of this test bed are described in [30] and [28]. The experimental setup is illustrated in Fig.…”

Section: Experimental Verification a Testbed Introductionmentioning

confidence: 99%

Modular Multilevel Converter Switching Frequency Harmonics Analysis and Suppression Through Cell Voltage Control

Wang

Shi

Bosworth

et al. 2020

IEEE Open J. Power Electron.

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This paper investigates the impact of reference's bias on the high frequency voltage spectrum for the modular multilevel converters (MMC). Analytical solution of the voltage spectrum under carrier Phase Shifted Pulse Width Modulation (PSPWM) is derived using double Fourier integral analysis. The distribution of the switching frequency voltage harmonics is found to be directly related to the ratio between the dc-link voltage and the cell voltage. A control method utilizing this phenomenon is thereby proposed to suppress switching frequency harmonics in the Differential Mode Voltage (DMV) and Common Mode Voltage (CMV). Cell voltage control trade-offs considering different cell numbers, different ac voltages, 3 rd harmonics injection, and cell voltage stress are also investigated. The analysis and control method are validated through experiments on a 1.25 megawatt MMC testbed. INDEX TERMS Common mode voltage, differential mode voltage, double Fourier integral, harmonics suppression, modular multilevel converter, phase-shifted PWM, switching harmonics.

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Design and Characterization of a Neutral-Point-Clamped Inverter Using Medium-Voltage Silicon Carbide Power Modules

New

Lemmon

DeBoi

et al. 2020

2020 IEEE Applied Power Electronics Conference and Exposition (APEC)

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Common-Mode Characterization of a Modular Multilevel Converter in a Megawatt-scale Medium-Voltage DC Test Bed

Cited by 6 publications

References 13 publications

Real-Time Controller Design Test Bench for High-Voltage Direct Current Modular Multilevel Converters

Real-Time Controller Design Test Bench for High-Voltage Direct Current Modular Multilevel Converters

Modular Multilevel Converter Switching Frequency Harmonics Analysis and Suppression Through Cell Voltage Control

Design and Characterization of a Neutral-Point-Clamped Inverter Using Medium-Voltage Silicon Carbide Power Modules

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