Electric power transmission system with power transmission and receiving antennas
First Claim
1. An electric power transmission system, comprising:
- a power transmission antenna that constitutes a series resonator with an inductance component of L1 and a capacitance component of C1, and to which AC power is input;
an inverter unit that converts DC voltage to AC voltage of a predetermined frequency to output to the power transmission antenna, the output of the inverter unit being input directly to the series resonator of the power transmission antenna;
a power receiving antenna that constitutes a series resonator electromagnetically coupled to the series resonator of the power transmission antenna, the series resonator of the power receiving antenna having an inductance component of L2 and a capacitance component of C2, and which receives electromagnetic energy from the series resonator of the power transmission antenna via electromagnetic fields;
a rectifying unit that rectifies an output of the power receiving antenna to output DC power; and
a load to which an output of the rectifying unit is input, whereinthe following relationships are established;
L1C1=L2C2
(Formula
2);
and
L1/C1>
L2/C2
(Formula
6),whereinand a coupling coefficient between the power transmission antenna and the power receiving antenna is denoted as k,the resistance value of the load is denoted by R, where the resistance value of the load R varies from a minimum resistance value of Rmin to a maximum resistance value of Rmax, andthe following relationship is established;
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Accused Products
Abstract
An electric power transmission system may include: a power transmission antenna that constitutes a series resonator with an inductance component of L1 and a capacitance component of C1, and to which AC power is input; a power receiving antenna that constitutes a series resonator with an inductance component of L2 and a capacitance component of C2, and which receives electromagnetic energy from the power transmission antenna via electromagnetic fields; a rectifying unit that rectifies an output of the power receiving antenna to output DC power; and a load to which an output of the rectifying unit is input, wherein, when a coupling coefficient between the power transmission antenna and the power receiving antenna is k, if load resistance value R is used in a range that satisfies Rmin≦R≦Rmax, the following relationships are established:
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Citations
6 Claims
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1. An electric power transmission system, comprising:
-
a power transmission antenna that constitutes a series resonator with an inductance component of L1 and a capacitance component of C1, and to which AC power is input; an inverter unit that converts DC voltage to AC voltage of a predetermined frequency to output to the power transmission antenna, the output of the inverter unit being input directly to the series resonator of the power transmission antenna; a power receiving antenna that constitutes a series resonator electromagnetically coupled to the series resonator of the power transmission antenna, the series resonator of the power receiving antenna having an inductance component of L2 and a capacitance component of C2, and which receives electromagnetic energy from the series resonator of the power transmission antenna via electromagnetic fields; a rectifying unit that rectifies an output of the power receiving antenna to output DC power; and a load to which an output of the rectifying unit is input, wherein the following relationships are established;
L1C1=L2C2
(Formula
2);
and
L1/C1>
L2/C2
(Formula
6),wherein and a coupling coefficient between the power transmission antenna and the power receiving antenna is denoted as k, the resistance value of the load is denoted by R, where the resistance value of the load R varies from a minimum resistance value of Rmin to a maximum resistance value of Rmax, and the following relationship is established; - View Dependent Claims (2, 3, 4)
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5. An electric power transmission system, comprising:
-
a power transmission antenna that constitutes a series resonator with an inductance component of L1 and a capacitance component of C1, and to which AC power is input; an inverter unit that converts DC voltage to AC voltage of a predetermined frequency to output to the power transmission antenna, the output of the inverter unit being input directly to the series resonator of the power transmission antenna; a power receiving antenna that constitutes a series resonator electromagnetically coupled to the series resonator of the power transmission antenna, the series resonator of the power receiving antenna having an inductance component of L2 and a capacitance component of C2, and which receives electromagnetic energy from the series resonator of the power transmission antenna via electromagnetic fields; a rectifying unit that rectifies an output of the power receiving antenna to output DC power; and a load to which an output of the rectifying unit is input, wherein the following relationships are established;
L1C1=L2C2
(Formula
2)
and
L1/C1>
L2/C2
(Formula
6),wherein a coupling coefficient between the power transmission antenna and the power receiving antenna is denoted as k, there are n modes of power transmission where the load has a resistance value of Rh in an hth mode, where h is an integer ranging from 1 to n, the resistance value of the load among the n modes varies from a minimum resistance value of Rhmin to a maximum resistance value of Rhmax, and the following relationship is established; - View Dependent Claims (6)
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Specification