专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明公开

EP4156212A1 IMPROVED LOW-EMI TRANSFORMER 有权转让
公开(公告)号：EP4156212A1
公开(公告)日：2023-03-29
申请号：EP21198623.7
申请日：2021-09-23
申请人： Ezone Green Energy AS
发明人： Frisvold, Erlend , Kjelland Svanes, Erik
IPC分类号： H01F27/38 , H01F27/40 , H02M1/44
摘要： The invention relates to a transformer (100e1) comprising: i) a magnetizable core (110) with respective primary and secondary coils; ii) a ground terminal (PE) for electrically connecting to an external ground terminal (999) of an electric power grid (900), and iii) a physical electrical ground node (175) placed at a location within the isolation transformer (100e1), wherein the physical electrical ground node (175) is electrically connected to the ground terminal (PE, 199). The transformer (100e1) further comprises: iv) at least two electrically-conductive loops (CL1..CL6) that are placed at different locations in the transformer (100e1) where a magnetic field may be built up during operational use, and v) a switching circuit (801) configured for sequentially, temporarily and selectively electrically coupling subsets (SS) of the electrically-conductive loops (CL1..CL6) with the physical electrical ground node (175) in accordance with a certain sequence and pattern. The invention provides for an isolation transformer that is much less susceptible to EMI without requiring any adaptation of the standards. In addition, the transformer does not require any infield adjustments or calibration.

IPRDB

热门服务

关于我们

友情链接

联系方式