| 摘要 |
The present invention relates to a snubber circuit and, more specifically, to a snubber circuit for a bidirectional DC/DC power converter. According to the present invention, the snubber circuit is a lossless snubber circuit applied to a bidirectional power converter which is connected between a power unit and a charging unit and converts bidirectional power through switching of a first switch connected to the power unit in series and a second switch connected to the charging unit in parallel. The snubber circuit includes: a first capacitor which is connected from one end of the first switch to the power unit in parallel; a first diode which is connected to the first capacitor in series; a second capacitor which is connected from the other end of the first switch to the power unit in parallel; a transformer which is connected to the second capacitor in series; a second diode which is connected to the transformer in series; a third diode which is connected between a neutral point between the first capacitor and the first diode and a neutral point between the second capacitor and the transformer; and a fourth diode which is connected to a neutral point between the transformer and the second diode and is connected to the output terminal of the first diode, wherein the output terminal thereof is connected to one end of a capacitor which is connected to the charging unit in parallel. |
