Power transmitting apparatus, power receiving apparatus, control apparatus, and wireless power transfer system
First Claim
1. A wireless power transfer system comprising:
- a power transmitting apparatus including a power supply to supply AC power and a power transmitting inductor supplied with the AC power;
a power receiving apparatus including a power receiving inductor to receive the AC power through magnetic coupling with the power transmitting inductor and an adjustment circuit to supply the AC power received by the power receiving inductor, to a load;
a mutual coupling adjusting unit to adjust a relative position between the power receiving inductor and the power transmitting inductor; and
a control unit to control the mutual coupling adjusting unit, based on a mutual coupling coefficient between the power receiving inductor and the power transmitting inductor;
wherein the control unit calculates the mutual coupling coefficient based on a voltage and a current on the power receiving apparatus and a voltage and a current on the power transmitting apparatus, and controls the mutual coupling adjusting unit so that the mutual coupling coefficient falls within a predetermined range and an upper limit of the predetermined range is a value less than a maximum of the mutual coupling coefficient between the power transmitting inductor and the power receiving inductor.
1 Assignment
0 Petitions
Accused Products
Abstract
There is provided a power transmitting apparatus including: a power supply, a power transmitting inductor, a mutual coupling adjusting unit and a control unit, in which the power supply supplies AC power, the power transmitting inductor transfers the AC power to a power receiving apparatus through magnetic coupling with a power receiving inductor in the power receiving apparatus, the mutual coupling adjusting unit adjusts a relative position between the power transmitting inductor and the power receiving inductor, and the control unit controls the mutual coupling adjusting unit, based on a mutual coupling coefficient between the power transmitting inductor and the power receiving inductor.
-
Citations
23 Claims
-
1. A wireless power transfer system comprising:
-
a power transmitting apparatus including a power supply to supply AC power and a power transmitting inductor supplied with the AC power; a power receiving apparatus including a power receiving inductor to receive the AC power through magnetic coupling with the power transmitting inductor and an adjustment circuit to supply the AC power received by the power receiving inductor, to a load; a mutual coupling adjusting unit to adjust a relative position between the power receiving inductor and the power transmitting inductor; and a control unit to control the mutual coupling adjusting unit, based on a mutual coupling coefficient between the power receiving inductor and the power transmitting inductor; wherein the control unit calculates the mutual coupling coefficient based on a voltage and a current on the power receiving apparatus and a voltage and a current on the power transmitting apparatus, and controls the mutual coupling adjusting unit so that the mutual coupling coefficient falls within a predetermined range and an upper limit of the predetermined range is a value less than a maximum of the mutual coupling coefficient between the power transmitting inductor and the power receiving inductor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
-
Specification