CONTACTLESS POWER SUPPLY CONTROLLER AND CONTACTLESS POWER SUPPLY SYSTEM

摘要

A contactless power supply system for transferring power without contact between a primary side coil and a secondary side coil is provided. In the contactless power supply system, a manipulation unit manipulates a secondary side converter so that power outputted to a load is controlled to be a command value. The manipulation unit manipulates an input voltage of a primary side resonance circuit so that a current flowing in the primary side resonance circuit equals a product of a current flowing in the secondary side resonance circuit and a current coefficient. The current coefficient is defined as a square root of a specific value and the specific value is an equivalent resistance of the secondary side resonance circuit divided by an equivalent resistance of the primary side resonance circuit.

主权项

1. A contactless power supply controller applied to a contactless power supply system that transfers power without contact between a primary side coil and a secondary side coil, wherein
the primary side coil and a primary side capacitor constitute a primary side resonance circuit and the secondary side coil and a secondary side capacitor constitute a secondary side resonance circuit, the contactless power supply system including: an AC voltage application unit that applies an AC voltage to the primary side resonance circuit; a secondary side rectifier circuit that converts an AC voltage outputted from the secondary side resonance circuit into a DC voltage; and a secondary side converter that converts the DC voltage outputted from the secondary side rectifier circuit into a predetermined DC voltage and outputs the predetermined DC voltage to a load, the contactless power supply controller comprising: a manipulation unit that
manipulates the secondary side converter so that power outputted to the load is controlled to be a command value andmanipulates an input voltage of the primary side resonance circuit so that a current flowing in the primary side resonance circuit equals a product of a current flowing in the secondary side resonance circuit and a current coefficient, wherein the current coefficient is defined as a square root of a specific value and the specific value is an equivalent resistance of the secondary side resonance circuit divided by an equivalent resistance of the primary side resonance circuit.