Power transmission device and power reception device
First Claim
Patent Images
1. A power transmission device comprising:
- an AC line filter provided on an AC power line connected to an AC power supply, and connected to a ground;
an inverter configured to convert electric power supplied from the AC power supply through the AC line filter into electric power to be transmitted;
a power transmission coil electrically connected to the inverter, and configured to receive from the inverter the electric power to be transmitted and transmit the electric power to a power reception coil of a power reception device in a contactless manner; and
a common mode filter provided on a power line between the inverter and the power transmission coil,the common mode filter including a first Y capacitor,the first Y capacitor not being connected to the ground, but being connected to a power line between the AC line filter and the inverter.
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Abstract
An AC line filter is connected to an enclosure serving as a ground. A power transmission unit is configured to transmit electric power to a power reception device in a contactless manner. An inverter is provided between the AC line filter and the power transmission unit. A common mode filter is provided between the inverter and the power transmission unit. A Y capacitor of the common mode filter is not connected to the enclosure, but is connected to a power line between the AC line filter and the inverter.
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Citations
6 Claims
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1. A power transmission device comprising:
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an AC line filter provided on an AC power line connected to an AC power supply, and connected to a ground; an inverter configured to convert electric power supplied from the AC power supply through the AC line filter into electric power to be transmitted; a power transmission coil electrically connected to the inverter, and configured to receive from the inverter the electric power to be transmitted and transmit the electric power to a power reception coil of a power reception device in a contactless manner; and a common mode filter provided on a power line between the inverter and the power transmission coil, the common mode filter including a first Y capacitor, the first Y capacitor not being connected to the ground, but being connected to a power line between the AC line filter and the inverter. - View Dependent Claims (2, 3, 4)
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5. A power reception device comprising:
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a power reception coil configured to receive electric power from a power transmission coil of a power transmission device in a contactless manner; a rectifier configured to rectify the electric power received by the power reception coil; a DC filter provided on a power line to which the electric power rectified by the rectifier is output, and connected to a ground; and a common mode filter provided on a power line between the power reception coil and the rectifier. the common mode filter including a first Y capacitor, the first Y capacitor not being connected to the ground, but being connected to a power line between the rectifier and the DC filter. - View Dependent Claims (6)
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Specification