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1. 发明公开

EP4174881A1 IMPROVED LOW-EMI ELECTRIC CABLE AND ELECTRIC CIRCUIT COMPRISING SUCH CABLE 审中-实审转让
公开(公告)号：EP4174881A1
公开(公告)日：2023-05-03
申请号：EP21204640.3
申请日：2021-10-26
申请人： Ezone Green Energy AS
发明人： Frisvold, Erlend
IPC分类号： H01B11/00
摘要： The invention relates to an electric cable (300-1, 300-1a, 300-1b, 300-2) for coupling an electric power source (100e) with an electric load (300). The electric cable (300-1, 300-1a, 300-1b, 300-2) extends from an input end (E1) to an output end (E2) and comprises at least two sub-cables (310, 320, 330). Each sub-cable (310, 320, 330) comprises at least two electrically-conductive wires (L11..L33) laid out in a twisted or braided fashion. A first wire (L11, L21, L31) of said wires (L11..L33) is configured for carrying an electric signal (L1, L2, L3) from the input end (E1) to the output end (E2) of the sub-cable (310, 320, 330). A second wire (L12, L22, L32) of said wires (L11.L33) is configured for forming a current return path (IRC, IRC1, IRC2, IRC3) for the electric signal (L1, L2, L3) of the first wire (L11, L21, L31), wherein the second wire (L12, L22, L32) is electrically connected with a ground terminal (318) at the output end (E2) through an electrical connection (319). The invention provides for an electric cable that is much less susceptible to EMI enabling to feed much larger currents through the cable without causing undesired effects.

2. 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.

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