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An Ultralow Loss Inductorless $dv/dt$ Filter Concept for Medium-Power Voltage Source Motor Drive Converters With SiC Devices.
- Source :
-
IEEE Transactions on Power Electronics . Jul2018, Vol. 33 Issue 7, p6072-6081. 10p. - Publication Year :
- 2018
-
Abstract
- In this paper, a novel $dv/dt$ filter is presented targeted for 100-kW to 1-MW voltage source converters using silicon carbide (SiC) power devices. This concept uses the stray inductance between the power device and the converter output as a filter component in combination with an additional small RC-link. Hence, a lossy, bulky, and costly filter inductor is avoided and the resulting output $dv/dt$ is limited to 5–10 kV/$\mu$s independent of the output current and switching speed of the SiC devices. As a consequence, loads with $dv/dt$ constraints, e.g., motor drives can be fed from SiC devices enabling full utilization of their high switching speed. Moreover, a filter-model is proposed for the selection of filter component values for a certain $dv/dt$ requirement. Finally, results are shown using a 300-A 1700-V SiC metal–oxide–semiconductor field-effect transistor (<sc>mosfet</sc>). These results show that the converter output $dv/dt$ can be limited to 7.5 kV/ $\mu$s even though values up to 47 kV/ $\mu$s were measured across the SiC <sc>mosfet </sc> module. Hence, the total switching losses, including the filter losses, are verified to be three times lower compared to when the <sc>mosfet</sc> $dv/dt$ was slowed down by adjusting the gate driver. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 08858993
- Volume :
- 33
- Issue :
- 7
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Power Electronics
- Publication Type :
- Academic Journal
- Accession number :
- 128664805
- Full Text :
- https://doi.org/10.1109/TPEL.2017.2739839