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In this paper, the detection of insulated-gate bipolar transistors (IGBT) short-circuit failures based on the gate charge characteristic is investigated. The main focus are impacts of the parasitic inductances and the operating point on the gate charge characteristic, as well as limitations for this protection concept by this effects. An analogous detection circuit is developed and relevant implementation...
In modern power semiconductor devices, the top side of the semiconductor is usually connected by bond wires. Thus top side cooling becomes impossible. This work presents the implementation and the thermal performance of a micro heat sink that allows effective fluid cooling of power semiconductors on both sides of the chip. The micro heat sink is printed directly onto the metalization of the silicon...
For applications with a dc-link voltage in the range of 400 V and high switching frequencies, Super Junction MOSFETs are superior to standard MOSFETs due to their low on-state resistance. However, they suffer from an extensive reverse recovery effect of their intrinsic body diode. This limits their usage in hard-switching half-bridge configurations. This paper analyzes a modified half-bridge based...
The European Spallation Source is a planned research facility in Lund-Sweden for scientific research using particle accelerators. In the facility protons will be accelerated in a pulsed pattern and collide with a heavy metal target. Due to the impact of the protons intense pulses of neutrons are emitted. These neutrons are led to experimental stations, where research on materials is executed. A total...
The change to a sustainable energy supply advances further development in grid interconnection, especially for offshore wind farms. This enables future wind farms to be interconnected by high voltage dc transmission grids. In this paper, a case study for dc grid with integrated offshore wind farms is studied and a system control is developed.
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