Power conversion device
AssigneeNissan Motor Co., Ltd.
InventorsKentarou Shin, Kraisorn Throngnumchai
Life of this patent
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Abstract
A power conversion device (1) of the present invention includes a power module (4) for converting direct current electricity to alternating current electricity, first and second power supply buses (5, 6) connecting input terminals (12, 13) and the power module (4), and a metal casing (7) for housing the first and second power supply buses (5, 6) and the power module (4). The capacitive coupling between the first power supply bus (5) and the metal casing (7) and the capacitive coupling between the second power supply bus (6) and the metal casing (7) are substantially matched. Thus, radiation noise is reduced by reducing the propagation of switching noise to the metal casing.
Claims17
A power conversion device for converting direct current electricity supplied from a direct current power supply to alternating current electricity, the power conversion device comprising:
- a first input terminal connected to a positive electrode of the direct current power supply;
- a second input terminal connected to a negative electrode of the direct current power supply;
- a power module for converting the direct current electricity supplied from the direct current power supply to the alternating current electricity;
- a first power supply bus connecting the first input terminal and the power module;
- a second power supply bus connecting the second input terminal and the power module;
- a metal casing for housing the first and second power supply buses and the power module;
- and
- a casing conducting member electrically continuous with the metal casing,
- wherein a capacitive coupling between the first power supply bus and the casing conducting member and a capacitive coupling between the second power supply bus and the metal casing are substantially matched, and the first power supply bus and the second power supply bus are disposed between the casing conducting member and the metal casing.
A power conversion device for converting direct current electricity supplied from a direct current power supply to alternating current electricity, the power conversion device comprising:
- a first input terminal connected to a positive electrode of the direct current power supply;
- a second input terminal connected to a negative electrode of the direct current power supply;
- a power conversion means for converting the direct current electricity supplied from the direct current power supply to the alternating current electricity;
- a first power supply means connecting the first input terminal and the power conversion means;
- a second power supply means connecting the second input terminal and the power conversion means;
- a metal housing means for housing the first and second power supply means and the power conversion means;
- and
- a casing conducting member electrically continuous with the metal housing means,
- wherein a capacitive coupling between the first power supply means and the casing conducting member and a capacitive coupling between the second power supply means and the metal housing means are substantially matched, and the first power supply means and the second power supply means are disposed between the casing conducting member and the metal housing means.
Dependencies are inferred from the claim text.