Abstract: A contactless power feeding facility includes a coupling unit electromagnetically coupling a target feeder line and an adjacent feeder line. A target power supply apparatus includes: a phase detector detecting the induced current phase which is the phase of an induced current flowing through the target feeder line by the electromagnetic induction via the coupling unit while an alternating current is supplied to the adjacent feeder line by an adjacent power supply apparatus; an alternating-current generator generating the alternating current to be supplied to the target feeder line; and a phase controller controlling the alternating-current generator such that the phase of the alternating current to be supplied to the target feeder approaches the induced current phase detected by the phase detector.

Abstract: 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.

Abstract: Three power supply devices 31 are connected in series via a transmission and receiving coupler 32 to the feeder 12, a short-circuit switch 38 that short-circuits both ends of each transmission coupler 32B is provided, a circuit including three receiving couplers 32A and the feeder 12 is set to a series resonant circuit at a predetermined frequency f, impedance of a circuit including each transmission coupler 32B, and a line connecting the power supply device 31 and the transmission coupler 32B 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 feeder 12 is being fed back to output a constant current of the predetermined frequency f to the feeder.

Abstract: Three power supply devices 31 are connected in series via a transmission and receiving coupler 32 to the feeder 12, a short-circuit switch 38 that short-circuits both ends of each transmission coupler 32B is provided, a circuit including three receiving couplers 32A and the feeder 12 is set to a series resonant circuit at a predetermined frequency f, impedance of a circuit including each transmission coupler 32B, and a line connecting the power supply device 31 and the transmission coupler 32B 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 feeder 12 is being fed back to output a constant current of the predetermined frequency f to the feeder.

Abstract: 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 (21) and the power consumption of induction lines (19), a lead time corresponding to a phase difference between the output currents of the induction lines is determined. A signal for driving transistors (52) is advanced ahead of a drive synchronization signal (?) according to the lead time.

Abstract: 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 (21) and the power consumption of induction lines (19), a lead time corresponding to a phase difference between the output currents of the induction lines is determined. A signal for driving transistors (52) is advanced ahead of a drive synchronization signal (?) according to the lead time.