NON-CONTACT POWER TRANSMISSION DEVICE AND DESIGN METHOD THEREOF
First Claim
1. A non-contact power transmission device comprising an AC power source, a resonant system, and a load,the resonant system including a primary coil connected to the AC power source, a primary resonance coil, a secondary resonance coil, and a secondary coil connected to the load,the non-contact power transmission device being characterized in that, when the relationship between an input impedance of the resonant system and a frequency of an AC voltage of the AC power source is plotted on a graph, the frequency of the AC voltage of the AC power source is set between a first frequency, at which the input impedance has a local maximum value, and a second frequency, which is greater than the first frequency and at which the input impedance has a local minimum value.
1 Assignment
0 Petitions
Accused Products
Abstract
A non-contact power transmission device is disclosed. The resonant system includes a primary coil connected to the AC power source, a primary resonance coil, a secondary resonance coil, and a secondary coil is connected to the load. When the relationship between an input impedance of the resonant system and a frequency of an AC voltage of the AC power source is shown in a graph, the frequency of the AC voltage of the AC power source is set between a first frequency at which the input impedance has a local maximum value, and a second frequency that is greater than the first frequency and at which the input impedance has a local minimum value.
-
Citations
10 Claims
-
1. A non-contact power transmission device comprising an AC power source, a resonant system, and a load,
the resonant system including a primary coil connected to the AC power source, a primary resonance coil, a secondary resonance coil, and a secondary coil connected to the load, the non-contact power transmission device being characterized in that, when the relationship between an input impedance of the resonant system and a frequency of an AC voltage of the AC power source is plotted on a graph, the frequency of the AC voltage of the AC power source is set between a first frequency, at which the input impedance has a local maximum value, and a second frequency, which is greater than the first frequency and at which the input impedance has a local minimum value.
-
4. A non-contact power transmission device comprising an AC power source, a resonant system, and a load,
the resonant system comprising a primary coil connected to the AC power source, a primary resonance coil, a secondary resonance coil, and a secondary coil connected to the load, the non-contact power transmission device being characterized in that a frequency of an AC voltage of the AC power source is set within an input impedance decreasing range, which is a frequency range in which an input impedance of the resonant system is decreased as the frequency of the AC voltage is increased.
-
7. A method for designing a non-contact power transmission device comprising an AC power source, a resonant system, and a load,
the resonant system including a primary coil connected to the AC power source, a primary resonance coil, a secondary resonance coil, and a secondary coil connected to the load, the design method being characterized in that, when the relationship between an input impedance of the resonant system and a frequency of an AC voltage of the AC power source is plotted on a graph, the frequency of the AC voltage of the AC power source is set between a first frequency, at which the input impedance has a local maximum value, and a second frequency, which is greater than the first frequency and at which the input impedance has a local minimum value.
-
9. A method for designing a non-contact power transmission device comprising an AC power source, a resonant system, and a load,
the resonant system including a primary coil connected to the AC power source, a primary resonance coil, a secondary resonance coil, and a secondary coil connected to the load, the design method being characterized in that a frequency of an AC voltage of the AC power source is set within an input impedance decreasing range, which is a frequency range in which an input impedance of the resonant system is decreased as the frequency of the AC voltage is increased.
Specification