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公开(公告)号：US11228234B2
公开(公告)日：2022-01-18
申请号：US16661412
申请日：2019-10-23
Applicant: ABB Schweiz AG
Inventor： Henri Kinnunen , Matti Laitinen , Jukka-Pekka Kittilä
Abstract: A power converter arrangement includes a semiconductor switch system with a controllable switch. A capacitor unit includes a capacitor having a capacitance value, the capacitor unit being operatively connected to the semiconductor switch system. A conductor arrangement includes a conductor adapted to conduct an electric current between the capacitor unit and the semiconductor switch system. The conductor has a resistance and an inductance. A resonant circuit is formed by the resistance, the inductance and the capacitance, and the power converter arrangement includes at least one attenuating element for attenuating an electrical ringing in the resonant circuit. The attenuating element is conductively isolated from the resonant circuit. The attenuating element includes ferromagnetic material, and the attenuating element is magnetically coupled to the conductor such that variations in the electric current intensity of the conductor induces eddy currents within the attenuating element.
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公开(公告)号：US11189414B2
公开(公告)日：2021-11-30
申请号：US16189144
申请日：2018-11-13
Applicant: ABB Schweiz AG
Inventor： Jukka-Pekka Kittilä , Vesa Palojoki , Asko Rantanen
Abstract: A choke comprising a magnetic core having a centre line that forms a closed loop, the choke has a choke axis around which the magnetic core is located, and a coil wound around the magnetic core, the coil has a plurality of turns, each of the turns has a width perpendicular to lengthwise direction of the turn, and a thickness perpendicular to both lengthwise direction of the turn and the width. The coil has a cross-section whose shape varies along lengthwise direction of the coil, such that each turn has an inner portion and an outer portion whose width is substantially greater than width of the inner portion, the outer portion is located further from the choke axis than the inner portion.
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公开(公告)号：US20190148048A1
公开(公告)日：2019-05-16
申请号：US16189144
申请日：2018-11-13
Applicant: ABB Schweiz AG
Inventor： Jukka-Pekka Kittilä , Vesa Palojoki , Asko Rantanen
Abstract: A choke comprising a magnetic core having a centre line that forms a closed loop, the choke has a choke axis around which the magnetic core is located, and a coil wound around the magnetic core, the coil has a plurality of turns, each of the turns has a width perpendicular to lengthwise direction of the turn, and a thickness perpendicular to both lengthwise direction of the turn and the width. The coil has a cross-section whose shape varies along lengthwise direction of the coil, such that each turn has an inner portion and an outer portion whose width is substantially greater than width of the inner portion, the outer portion is located further from the choke axis than the inner portion.
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