| 摘要 |
PURPOSE:To reduce the distortion of an input, by extracting one output from each of three sets of high-frequency conversion circuits, by composing the same in series, and by subjecting it to all-wave rectification and smoothing. CONSTITUTION:When three-phase power sources e1, e2 and e3 are inputted, output voltages v1, v2 and v3 of high-frequency conversion circuits 1, 2 and 3 are synchronized by a synchronous signal of a synchronization circuit 5 respectively, and the peak values of these voltages are made proportional to the absolute values of instantaneous values of the power sources e1, e2 and e3. Accordingly, a composite output voltage vout obtained by composing theses output voltages v1, v2 and v3 in series is a high-frequency voltage having a peak value of a prescribed level. This composite output voltage vout is subjected to all-wave rectification by a rectifying-smoothing circuit 4 to be converted into a smooth direct current. By this constitution, each output is supplied to a load without discontinuation, and thereby distortion and the like can be reduced. |
