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发明公开
CN101795072A 一种高压直流-直流电力电子变压器 无效 - 撤回

一种高压直流-直流电力电子变压器
摘要：
一种高压直流-直流电力电子变压器，由级联式模块化变流器(1)、一个双绕组中频或高频变压器(2)和一个全控型H桥(3)构成。所述的级联式模块化变流器(1)由两个相同的桥臂组成，每个桥臂由数量相同的子模块Sub首尾级联而成；所述的两个桥臂的中点与双绕组中频或高频变压器(2)原边的两根引线分别相连；所述的双绕组中频或高频变压器(2)副边与全控型H桥(3)直接连接或在双绕组中频或高频变压器(2)与全控型H(3)之间串连谐振电容(5)。本发明可以实现高压直流电压与低压直流电压的转换，同时具备电气隔离功能。与现有高压直流-直流变流装置相比，本发明具有体积小、重量轻的优点。
摘要（英）：

The invention relates to a high-voltage direct-current direct-current (HVDC-DC) power electronic converter transformer comprising a cascade modular converter (1), a double-winding medium or high-frequency transformer (2) and a fully-controlled H bridge (3). The cascade modular converter (1) consists of two same bridge arms, and the two bridge arms are formed by connecting the same number of sub-modules end to end in a cascading way; the middle points of both the two bridge arms are respectively connected with two leads of the primary side of the double-winding medium or high-frequency transformer (2); and the secondary side of the double-winding medium or high-frequency transformer (2) is directly connected with the fully-controlled H bridge (3) or is connected in series with a resonant capacitor (5) between the double-winding medium or high-frequency transformer (2) and the fully-controlled H bridge (3). The HVDC-DC power electronic converter transformer can realize the conversion of the high-voltage DC voltage and the low-voltage DC voltage and has the electrical isolation function. Compared with the prior HVDC-DC converting device, the HVDC-DC power electronic converter transformer has the advantages of small volume and light weight.

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