Daifuku Co., Ltd.

Makoto Nunoya

Masaaki Yamamoto

Kazutoshi Takeda

Akira Murota

An adjustment system causes a target power supply device to execute first processing and second processing while causing at least one adjacent power supply device to perform a regular power supply operation. The first processing is processing for measuring a first voltage value while a power supply circuit of the target power supply device does not output an alternating current. The second processing is processing for measuring a second voltage value while the power supply circuit of the target power supply device outputs an alternating current. The adjustment system obtains a feeder circuit reactance of a feeder circuit based on the difference between the first voltage value and the second value, and executes adjustment processing for adjusting circuit characteristics with use of an adjustment unit in accordance with the obtained feeder circuit reactance in such a manner that the feeder circuit impedance is a predetermined impedance.

Non-contact power supply facility, impedance adjustment method for non-contact power supply facility, and impedance adjustment program for non-contact power supply facility

Three power supply devicesare connected in series via a transmission and receiving couplerto the feeder, a short-circuit switchthat short-circuits both ends of each transmission couplerB is provided, a circuit including three receiving couplersA and the feederis set to a series resonant circuit at a predetermined frequency f, impedance of a circuit including each transmission couplerB, and a line connecting the power supply deviceand the transmission couplerB is set to capacitive reactance at the predetermined frequency f, and an voltage to be output to the circuit including the line is controlled while a current flowing through the feederis being fed back to output a constant current of the predetermined frequency f to the feeder.

Non-contact power feeding apparatus having plurality of power supplies

A non-contact power supply system is provided in which current phases of induction lines are matched. According to the output current of a power supply unit () and the power consumption of induction lines (), a lead time corresponding to a phase difference between the output currents of the induction lines is determined. A signal for driving transistors () is advanced ahead of a drive synchronization signal (&#x3b2;) according to the lead time.

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Osaka, Japan

Makoto Nunoya