| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a noncontact power supply system of an elevator, this noncontact power supply system being able to detect the situation that power supply efficiency has lowered and able to cope with this situation. <P>SOLUTION: A counterweight-driven elevator includes: a first power supply device 21 provided to noncontactly supply a required power to a counterweight 12 at a power supply position inside a hoistway 10; and an second power supply device 22 provided to noncontactly supply a required power to a passenger car 11. An elevator controller 52 includes: a power supply efficiency-checking section 52a which checks power supply efficiency in the power supply devices 21, 22 based on output signals of magnetic sensors 50a, 50b respectively mounted on the power supply devices 21, 22; and a drive control section 52b which controls the driving of the relevant power supply device out of the power supply devices 21, 22 to raise the power supply efficiency of the relevant power supply device if a state of power supply efficiency less than a predetermined value is detected. <P>COPYRIGHT: (C)2013,JPO&INPIT |
