The invention relates to a high voltage inverter with high efficiency rectifier transformer, which comprises a shell, shell cover installation of high voltage bushing, lightning arrester, pressure switch and oil level gauge, a vertical side peripheral surface of a heat sink is arranged in the shell, filled with transformer oil; the shell is provided with an iron core, coils are wound on the high side. The coil is connected with the high-voltage casing; which is characterized in that a low voltage side coil connecting terminal board, terminal board installed in the casing periphery, and connected with the shell seal. The invention solves the problem of oil sealing on the outlet side of the oil immersed transformer through the design of the terminal plate, and flexibly arrange the arbitrary angle and the number of terminal boards according to the requirements in the vertical side of the transformer housing. By adopting the structure provided by the invention, the convection self circulation oil cooler can be used to reduce the magnetic core density and the current density of the winding, so that the overall electric energy efficiency of the rectifier transformer is greater than 99%.
【技术实现步骤摘要】
高压变频器用高效能整流变压器
:本专利技术涉及一种高压变频器用高效能整流变压器。
技术介绍
:高压变频器用高效能整流变压器,属于特种变压器,用于高压变频器的电源输入整流变压器,将三相6000-35000伏的输入电压转换为几十相400-700伏的电压输出,主电路通过几十路IGBT的串联SPWM逆变实现高压逆变输出,拖动大容量交流电机降低电流损耗达到节能的目的。目前都采用干式风扇风冷式整流变压器,存在的主要问题是铁芯的高频谐波损耗大,采用大功率风冷系统使整体电能效率低于96%,由于干式结构的灰尘腐蚀容易产生匝间绝缘故障。
技术实现思路
:本专利技术要提供一种油浸式的可以克服上述缺陷的高压变频器用高效能整流变压器。本专利技术所提供的高压变频器用高效能整流变压器,包括壳体,壳体上盖上安装高压套管、避雷器、调压开关和油位计,壳体立侧周面设有散热片,壳体内注有变压器油;壳体内安装有铁芯,铁芯上绕有线圈,线圈的高压侧连接高压套管;其特征是,线圈低压侧连接端子板,端子板安装在壳体外围,并与壳体密封连接。所述的端子板为模块化结构。所述的壳体上设置连接板,连接板通过螺栓固定端子板,连接板和端子板之间设置有密封圈;端子板上嵌装铜螺栓,铜螺栓上安装铜螺母和铜垫片。所述的端子板采用浇筑方式与铜螺栓、铜螺母、铜垫片构成一体式结构。所述的端子板与连接板之间通过密封圈密封。所述的铁芯为非晶铁芯或0.23mm厚超低损耗取向硅钢铁芯。本专利技术的有益效果是:通过端子板的设计解决了油浸式变压器低压侧出线的油密封问题,并且根据需求灵活布置在变压器壳体立侧面的任意角度和端子板的数量。采用本专利技术所提 ...
【技术保护点】
一种高压变频器用高效能整流变压器,包括壳体,壳体上盖上安装高压套管、避雷器、调压开关和油位计,壳体立侧周面设有散热片,壳体内注有变压器油;壳体内安装有铁芯,铁芯上绕有线圈,线圈的高压侧连接高压套管;其特征是,线圈低压侧连接端子板,端子板安装在壳体外围,并与壳体密封连接。
【技术特征摘要】
1.一种高压变频器用高效能整流变压器,包括壳体,壳体上盖上安装高压套管、避雷器、调压开关和油位计,壳体立侧周面设有散热片,壳体内注有变压器油;壳体内安装有铁芯,铁芯上绕有线圈,线圈的高压侧连接高压套管;其特征是,线圈低压侧连接端子板,端子板安装在壳体外围,并与壳体密封连接。2.根据权利要求1所述的高压变频器用高效能整流变压器,其特征是,所述的端子板为模块化结构。3.根据权利要求2所述的高压变频器用高效能整流变压器,其特征是,所述的壳体上设置连接板,连接...
【专利技术属性】
技术研发人员:荣庆玉,邹黎,咸日常,刘志田,咸日明,
申请(专利权)人:山东汇能电气有限公司,
类型:发明
国别省市:山东,37
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