NON-CONTACT POWER FEEDING DEVICE AND NON-CONTACT POWER FEEDING METHOD

A contactless power feeding system includes a power supply line to supply AC power to a power receiver on a mobile body in a non-contact manner, and a power supply boards to generate AC power and supply the AC power to the power supply line. Each of the power supply boards performs PWM control to control the AC power to be supplied to the power supply line, by generating a control pulse to control generation of the AC power such that a timing of a center of an ON pulse of the control pulse has a same timing as a timing defined by a reference clock, and by changing a duration of the ON pulse.