Contactless power feeding apparatus

摘要

A contactless power feeding apparatus includes a secondary winding to which power is supplied from a primary winding by an AC power supply. An impedance absolute-value characteristic of Z1 has a frequency of a fundamental wave component to be between a frequency where a local maximum exists and that is nearest to the frequency of the fundamental wave component, and a frequency where a local minimum exists and that is nearest to the frequency of the fundamental wave component. An impedance absolute-value characteristic of Z2 has the frequency of the fundamental wave component to be between a frequency where the local maximum exists and that is nearest to the frequency of the fundamental wave component, and a frequency where the local minimum exists and that is nearest to the frequency of the fundamental wave component.

主权项

1. A contactless power feeding apparatus comprising a secondary winding to which power is supplied from a primary winding by an AC power supply, wherein
an impedance absolute-value characteristic of Z1 with respect to a frequency has a frequency of a fundamental wave component of the AC power supply to be between a frequency where a local maximum exists and that is nearest to the frequency of the fundamental wave component of the AC power supply, and a frequency where a local minimum exists and that is nearest to the frequency of the fundamental wave component, and an impedance absolute-value characteristic of Z2 with respect to the frequency has the frequency of the fundamental wave component to be between a frequency where the local maximum exists and that is nearest to the frequency of the fundamental wave component of the AC power supply, and a frequency where the local minimum exists and that is nearest to the frequency of the fundamental wave component, where Z1 indicates the impedance of just a primary side when viewed from an output side of the AC power supply, and Z2 indicates an impedance of just a secondary side when viewed from a side of a load to be connected to the secondary winding.