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Invention Publication
CN102474172A 电压中间电路变换器的中间电路电容器的放电方法 失效 - 权利终止

电压中间电路变换器的中间电路电容器的放电方法
Abstract:
本发明涉及一种为一电压中间电路变换器(2)的一中间电路电容器(CZK)放电的方法，所述电压中间电路变换器的网侧换流器(4)具有可断功率半导体(A1，...，A6)，且可借助一由一预充电接触器(VS)、一预充电电阻器(RV)、一变压器(T)和一主开关(HS)构成的串联电路与一交流电网连接，所述预充电接触器和预充电电阻器可用一电源接触器(NS)跨接。根据本发明，将所述主开关(HS)和所述电源接触器(NS)断开，其中，将预充电接触器(VS)闭合，将所述线路侧换流器(4)的两个沿对角线相对布置的可断功率半导体(A1，A4；A2，A3)接通。借此实现一种无需设置附加组件便能为电压中间电路变换器(2)的中间电路电容器(CZK)放电的方法。
Abstract(English):

The invention relates to a method for discharging an intermediate circuit converter (CZK) of an intermediate voltage circuit converter (2). The electronic power converter (4) of the intermediate voltage circuit converter on the line side has power semiconductors (A1,...,A6) that can be disconnected and can be connected to an AC supply network via a series connection of a precharging contactor (VS) and a precharging resistor (Rv), a transformer (T) and a main switch (HS) which series connection can be by-passed by means of a line contactor (NS). The main switch (HS) and the line contactor (NS) are opened, the precharging contactor (VS) being closed and two diagonally opposite disconnectible power semiconductors (A1, A4; A2, A3) of the electronic power converter (4) on the line side being connected. The invention devises a method for discharging an intermediate circuit capacitor (CZK) of an intermediate voltage circuit converter (2) without any additional components being required.

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