Improved Power Density of a 6 kV, 1 MW Power Electronics Building Block Through Insulation Coordination

Stewart, Joshua; Motwani, Jayesh Kumar; Yu, Jianghui; Cvetkovic, Igor; Burgos, Rolando

doi:10.1109/compel53829.2022.9829968

Cited by 8 publications

(4 citation statements)

References 9 publications

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“…[164] describes the development, manufacturing, and preliminary testing of a 1.7kV SiC switching cell intended for use in a 250kW integrated PEBB (iPEBB). In [165], a full-bridge PEBB was produced, which includes all ancillary circuits. The individual PEBB is rated for 6kV operation, but the insulation design of critical systems allows a common mode voltage of up to 30kV in an MMC.…”

Section: ) Pebbs Conceptmentioning

confidence: 99%

Power Converters Coolant: Past, Present, Future, and a Path Toward Active Thermal Control in Electrified Ship Power Systems

Moghassemi,

Rahman,

Ozkan

et al. 2023

IEEE Access

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Power converters have widespread applications in automotive, renewables, and power systems. The demand for power modules with low power consumption and high efficiency has increased due to advancements in semiconductor devices. So, power converters need to be highly efficient to reduce costs associated with energy dissipation and cooling requirements. This paper discusses various active thermal control methods for high-power power converters. It covers modulation and configuration techniques, ranging from single configurations to cascaded, modular, and multilevel converters. These concepts form the basis of power electronics building blocks, particularly relevant in all-electric ship systems. Power electronics building blocks represent a This article has been accepted for publication in IEEE Access.

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Section: ) Pebbs Conceptmentioning

confidence: 99%

Power Converters Coolant: Past, Present, Future, and a Path Toward Active Thermal Control in Electrified Ship Power Systems

Moghassemi,

Rahman,

Ozkan

et al. 2023

IEEE Access

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“…However, thanks to the wide input voltage range, it is possible to power the auxiliary PSU directly from a floating source, e.g., from an auxiliary GD supply in a MV power converter as shown in Fig. 8 (b), where the additional power consumption of around 2 − 3 W is negligible [38]. Thereby, the transformer isolation only has to withstand the voltage difference between measurement reference potential and PSU input voltage reference potential and the rating of 1 kV is sufficient.…”

Section: Low Coupling Capacitance Isolated Power Supply Unitmentioning

confidence: 99%

High-Bandwidth Isolated Voltage Measurements With Very High Common Mode Rejection Ratio for WBG Power Converters

Niklaus

Bonetti

Stäger

et al. 2022

IEEE Open J. Power Electron.

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Galvanically isolated voltage measurements are becoming increasingly important for the characterization of converter systems with fast switching Wide-Bandgap (WBG) semiconductors. A very high Common Mode Rejection Ratio (CMRR) > 80 dB for frequencies up to several tens of MHz is required to accurately measure, e.g., the high-side gate-source or drainsource voltage in a half-bridge, or voltages on floating potentials as, e.g., found in multi-level converters. Common to all listed measurement scenarios is the fast changing reference potential, which acts as Common Mode (CM) disturbance. This article derives the minimum necessary CMRR at different frequencies to constrain the time-domain measurement error below a certain limit. Thereby, only the switched voltage and the voltage transition rate (dv/dt) of the CM disturbance are to be considered and not the actual converter switching frequency f sw . Afterwards, a galvanically isolated measurement system with a CMRR > 100 dB up to 100 MHz and an analog measurement bandwidth of 130 MHz is presented. Critical design aspects to achieve this performance are investigated. Compared to commercially available isolated voltage probes, the presented measurement system does not require any additional equipment like an oscilloscope to perform and visualize measurements, since the data is already digitized/sampled and thus can be transmitted directly to a host device (e.g., computer or monitoring system) with corresponding Graphical User Interface (GUI) software. Experimental verification in frequency-and timedomain confirms that the performance is on par with the best commercially available isolated voltage probes.

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“…MMCs with full-bridge submodules (FB-MMCs) are proposed as the ideal solution for this first-stage AFE [24] due to their ability to operate at MV, their modularity, scalability, fault handing capabilities, and ability to operate for low-DC/high-AC voltage operation [25], [26], [27]. Yet, FB-MMCs have not gained prominence within the industry because of the large number of switching devices required, high losses, and bulky capacitors.…”

Section: Introductionmentioning

confidence: 99%

Modeling and Control of a Hybrid Modular Multilevel Converter for High-AC/Low-DC Medium-Voltage Applications

Motwani,

Liu,

Boroyevich

et al. 2024

IEEE Trans. Power Electron.

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Improved Power Density of a 6 kV, 1 MW Power Electronics Building Block Through Insulation Coordination

Cited by 8 publications

References 9 publications

Power Converters Coolant: Past, Present, Future, and a Path Toward Active Thermal Control in Electrified Ship Power Systems

Power Converters Coolant: Past, Present, Future, and a Path Toward Active Thermal Control in Electrified Ship Power Systems

High-Bandwidth Isolated Voltage Measurements With Very High Common Mode Rejection Ratio for WBG Power Converters

Modeling and Control of a Hybrid Modular Multilevel Converter for High-AC/Low-DC Medium-Voltage Applications

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