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This paper presents a model based junction temperature control system to increase the expected lifetime of IGBT power modules by using a hybrid discontinuous modulation technique. This modulation technique offers the possibility to influence the switching losses and is therefore used as a correcting variable for controlling the junction temperatures of IGBT power modules.
Power density increase is one of the challenges of Wind Power Converters and the use of Silicon Carbide semiconductors is a promising solution due to the enhanced performance in terms of switching behaviour. This is demonstrated on an existing Wind Power Converter with a hybrid module of SiC based Diode and Silicon IGBT.
With the aim to solve the unbalanced thermal behavior in the modular multilevel converter, introduced by mismatch in the submodule parameters, a thermal balancing control strategy is proposed here. The proposed solution ensures a balanced junction temperature for the power devices, while the balance between the capacitor voltages is maintained.
Due to wider band gap of silicon carbide (SiC) compared to silicon (Si), MOSFET made in SiC has considerably lower drift region resistance, which is a significant resistive component in high-voltage power devices. With low on-state resistance and its inherently low switching loss, SiC MOSFETs can offer much improved efficiency and compact size for the converter compared to those using Si devices....
In the area of marine industry, there is a large interest in converters for high power density. Increasing power above 8MW; pf 0.8; 3, 3kV in Medium Voltage Drive leds to either increase voltage or associate drives in parallel. Both solutions consist in doubling the number of components to reach the same power density that means drives with higher footprints and expensive solutions. This paper presents...
This paper presents a design procedure for a full-bridge converter with IGBT transistors loaded with serial resonant circuit. The main concern was the reduction of the switching losses in order to increase converter efficiency and power density. One of the basic applications of this topology with serial resonant load is with the induction heating converters. Theoretical analysis of the switching power...
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