CONTACTLESS ELECTRICITY-SUPPLYING DEVICE
First Claim
1. A contactless electricity-supplying device comprising:
- a secondary winding to which an electric power is supplied from a primary winding by an alternating current power supply;
an impedance characteristic of Z1 relative to a frequency has a maximum in a vicinity of a frequency of a fundamental wave component of the alternating current power supply,an impedance characteristic of Z2 relative to the frequency has the frequency of the fundamental wave component between, a frequency that has a maximum nearest to the frequency of the fundamental wave component, and a frequency that has a minimum nearest to the frequency of the fundamental wave component,whereinZ1 shows that a coupling coefficient between the primary winding and the secondary winding is a certain value, and that the Z1 is an impedance of only a primary side when the Z1 is viewed from an output side of the alternating current power supply, andZ2 shows that the coupling coefficient between the primary winding and the secondary winding is the certain value, and that the Z2 is an impedance of only a secondary side when the Z2 is viewed from a load side connected to the secondary winding.
1 Assignment
0 Petitions
Accused Products
Abstract
A contactless electricity-supplying device (20) includes a secondary winding (201) to which electric power is supplied from a primary winding (101), by an AC power supply (6). The impedance characteristic (Z) of Z1 in regard to the frequency has a local maximum (ZMAX) near the frequency (f0) of the fundamental wave component of aforementioned AC power supply (6); and the impedance characteristic (Z) of Z2 in regard to the frequency has the aforementioned frequency (f0) of the fundamental wave component to be between, a frequency (fMAX) that has its local maximum (ZMAX) nearest to aforementioned frequency (f0) of the fundamental wave component, and a frequency (fMIN) that has its local minimum (ZMin) nearest to the frequency (f0) of the fundamental wave component. Z1 indicates that the coupling coefficient (k) between aforementioned primary winding (101) and aforementioned secondary winding (201) is a prescribed value (0.3), and that it is an impedance of just the primary side (Z1) as seen from the output side of aforementioned AC power supply (6); and Z2 indicates that the coupling coefficient (k) between aforementioned primary winding (101) and aforementioned secondary winding (201) is the aforementioned prescribed value (0.3), and that it is an impedance of just the secondary side (Z2) as seen from the side of a load (72) to be connected to aforementioned secondary winding (201).
-
Citations
25 Claims
-
1. A contactless electricity-supplying device comprising:
-
a secondary winding to which an electric power is supplied from a primary winding by an alternating current power supply; an impedance characteristic of Z1 relative to a frequency has a maximum in a vicinity of a frequency of a fundamental wave component of the alternating current power supply, an impedance characteristic of Z2 relative to the frequency has the frequency of the fundamental wave component between, a frequency that has a maximum nearest to the frequency of the fundamental wave component, and a frequency that has a minimum nearest to the frequency of the fundamental wave component, wherein Z1 shows that a coupling coefficient between the primary winding and the secondary winding is a certain value, and that the Z1 is an impedance of only a primary side when the Z1 is viewed from an output side of the alternating current power supply, and Z2 shows that the coupling coefficient between the primary winding and the secondary winding is the certain value, and that the Z2 is an impedance of only a secondary side when the Z2 is viewed from a load side connected to the secondary winding. - 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, 24, 25)
-
Specification