| 摘要 |
<p>Provided are a rectifier and a rectifying system that, even in instances of wide variation in the value of an input current, enable high-frequency switching for addressing the fluctuation at high speed, resulting in an adequate effect in terms of higher harmonic suppression and improving the power factor. Switching pattern data corresponding to the value of the input current is selected, and MOSFETs are turned on or off on the basis of the selected switching pattern data. Next, while the selected switching pattern data is successively corrected in the direction of improving power factor, the MOSFETs are continuously turned on or off on the basis of the corrected switching pattern data. In addition, the difference between the switching pattern data for each of the corrections and the selected switching pattern data is determined, the correcting being continued if the determined difference is below a set value, and the switching pattern data being returned to the initially selected switching pattern data if the derived difference is equal to or greater than the set value.</p> |
