Vehicle auxiliary power supply device
AssigneeMitsubishi Electric Corporation
InventorsTakeshi Tanaka, Yukio Nakashima
Life of this patent
Estimating the term…
Abstract
A vehicle auxiliary power supply device mounted in an electric rolling stock and that includes a converter device to convert DC power supplied from a DC power supply into desired DC power, and a three-phase inverter to convert the DC power supplied from the converter device into three-phase AC power and to supply the converted power to a load, wherein a switching element of the three-phase inverter is constituted by a semiconductor module formed of a wide bandgap semiconductor.
Claims10
A vehicle auxiliary power supply device mounted in an electric rolling stock, the device comprising:
- a converter to convert first DC power supplied to the electric rolling stock from a DC power supply into second DC power, which is stepped-down from the first DC power;
- and
- a three-phase inverter to convert the second DC power supplied from the converter into three-phase AC output power having a sinusoidal waveform and to supply the converted three-phase AC output power to a load of the electric rolling stock,
- wherein a semiconductor module formed of wide bandgap semiconductor is used as a switching element, having a switching frequency of at least 60 kHz, of the three-phase inverter, and
- wherein only a filter reactor or only a filter capacitor is provided on an output side of the three-phase inverter.
A vehicle auxiliary power supply device mounted in an electric rolling stock, the device comprising:
- a converter to convert first DC power supplied from a DC power supply into second DC power which is stepped-down from the first DC power;
- and
- a three-phase inverter to convert the second DC power supplied to the electric rolling stock from the converter into three-phase AC output power having a sinusoidal waveform and to supply the converted three-phase AC output power to a load of the electric rolling stock,
- wherein a semiconductor module formed of wide bandgap semiconductor is used as a switching element, having a switching frequency of at least 60 kHz, of the three-phase inverter, and
- wherein the three-phase inverter is connected to the load with no filter reactor and with no filter capacitor in-between.
Dependencies are inferred from the claim text.