イミタンス変換器を用いた非接触給電装置における高周波定電流電源

概要

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Non-Contact Energy Transfer System are used in the various fields in the industry. A high frequency constant current must be supplied to the feeder of Non-Contact Energy Transfer System. This paper proposes a High Frequency Constant Power Supply for a Non-Contact Energy Transfer System using an Immittance Converter.When there are two or more pick-up coils on the feeder, the output of one pick-up coil doesnt affect to other pick-up coils on the feeder if the feeder current is constant. We proposed to use an immittance converter to transform the high frequency constant voltage source into a high frequency constant current source. The immittance converter is the combined word for the impedance-admittance converter. The immittance converter has an input impedance that is proportional to the admittance of the load connected across output terminals. In this converter, the output current is proportional to the input voltage and the input current is proportional to the output voltage. Consequently, it converts a constant voltage source into a constant current source and a constant current source into a constant voltage source.The configuration of High Frequency Constant-Current Power Supply for Non-Contact Energy Transfer System, an excessive reactance and a little frequency deviation characteristics and output characteristics in changing duty factor are described in this paper. The experimental result is also described.