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CN108736712A 电力转换器和电力系统 有权 转让

电力转换器和电力系统
摘要：
一种电力转换器包括：电感线圈(104)，电感线圈的第一极连接到电力转换器的输入端子(102)；位于地与电感线圈的第二极之间的可控开关(105)；第一单向导电部件(106)，该第一单向导电部件在所述可控开关不导电时提供从所述电感线圈流向所述电力转换器的输出端子(103)的电流的路径；以及在所述输出端子处的过流保护器(107)。电力转换器包括第二单向导电部件(108)，第二单向导电部件(108)用于在输出端子处的电压小于输入端子处的电压的故障情况下将来自输入端子的电流传导至过流保护器。因此，第二单向导电元件构成了一个用于故障电流的低电感旁路路径，并且使得过流保护器能够快速响应故障情况。
摘要（英）：

A power converter comprises an inductor coil (104) whose first pole is connected to an input terminal (102) of the power converter, a controllable switch (105) between the ground and a second pole of the inductor coil, a first unidirectionally conductive component (106) providing a path for electric current from the inductor coil towards an output terminal (103) of the power converter when the controllable switch is non-conductive, and an over-current protector (107) at the output terminal. The power converter comprises a second unidirectionally conductive component (108) for conducting electric current from the input terminal to the over-current protector in a fault situation where voltage at the output terminal is smaller than voltage at the input terminal. Thus, the second unidirectionally conductive component constitutes a low-inductance bypass route for fault current and enables the over-current protector to react fast to a fault situation.

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