| 摘要 |
<p>A bridge-type power converter has, in each phase, a inductor (L1) connected between a connection point of said two switching elements (Q1, Q2) and an output terminal; capacitors (C1, C2) connected between the output terminal and a positive or negative side of a d.c. bus for changing an output voltage along a curve determined by a phenomenon of resonance with the reactor (L1) when the semiconductors switching elements (Q1, Q2) operate, causing abrupt changes of a voltage at the connection point; diodes (D3, D4) for changing a current path at a time when the resonance goes approximately one quarter of period to thereby stop the resonance; and constant voltage diodes (ZD1, ZD2) for absorbing the energy stored in the inductor (L1) during the resonance. <IMAGE></p> |
