This study evaluates Partial Discharge Activity in Nomex 410 insulation exposed to high dv/dt square voltage. Based on endurance testing and UHF measurements, the results show that Partial Discharge Activity significantly reduces insulation lifetime in medium-frequency transformers.
This paper presents a Quasi-2-Level operated MMC for MVDC DAB converters. The proposed design reduces passive components while maintaining Zero-Voltage Switching through frequency adaptation and optimized converter design.
This study experimentally quantifies asymmetric losses in an Isolated Modular Multilevel DC-DC Converter (IM2DC) submodule, showing that low-side devices can dissipate up to twice the losses of high-side devices. A thermal imaging-based calorimetric method provides accurate, nonintrusive measurements, supporting future optimization of converter design, thermal management, and reliability.
The insertion of a dielectric barrier between the conductors in gas insulation can improve effectively the insulation performance in high voltage equipment such as MV gas insulated switchgear.
Using endurance testing and UHF-based measurements, this study analyses partial discharge activity in Nomex 410 insulation exposed to high dv/dt square voltage and its impact on insulation lifetime in medium-frequency transformers.
This paper presents a techno-economic assessment of battery hybridization for small run-of-river hydropower
This paper presents an experimental study on the use of DAS for partial discharge detection in high-voltage power cables.
A mixed sequential power cycling experiment was conducted to assess the impact of load sequence on IGBT module lifetime
the influence of different control philosophies for Modular Multi-level Converters on the design of MTDC grids’ control and protection is investigated and discussed.
This paper highlights two DC grid equivalent models: a simple RLC model and a frequency-dependent reduced-order model.
