公开(公告)号：US11747841B2

公开(公告)日：2023-09-05

申请号：US17116522

申请日：2020-12-09

Applicant: Eaton Intelligent Power Limited

Inventor： Jonathan Michael Schaar ,  Tiefu Zhao

IPC: G05F1/20 ,  H02J3/18 ,  H02J4/00

CPC classification number: G05F1/20 ,  H02J3/1878 ,  H02J4/00

Abstract: An apparatus for a load tap changer includes a first primary winding electrically connected to a first contact, the first contact configured to connect to one of a plurality of taps in a load tap changer; a second contact, the second contact configured to connect to one of the plurality of taps in the load tap changer; a magnetic core; and a control circuit including: a secondary winding configured to magnetically couple to the first primary winding and the magnetic core; and an electrical network electrically connected to the secondary winding, the electrical network being configured to prevent magnetic saturation of the magnetic core during switching of the first or second contact.

公开(公告)号：US20210287858A1

公开(公告)日：2021-09-16

申请号：US17179788

申请日：2021-02-19

Applicant: Eaton Intelligent Power Limited

Inventor： Jonathan Michael Schaar ,  Tiefu Zhao ,  Yafeng Wang

IPC: H01H9/00 ,  G05F1/66 ,  G05B19/05

Abstract: A voltage regulation device includes: a plurality of taps; a first electrical contact configured to connect to one of the plurality of taps; a second electrical contact configured to connect to one of the plurality of taps; and a network electrically connected to the first electrical contact and to the second electrical contact. The network is configured to control a voltage differential between the first electrical contact and the second electrical contact or an amount of current that flows in the first electrical contact and the second electrical contact.

公开(公告)号：US20200057461A1

公开(公告)日：2020-02-20

申请号：US16531440

申请日：2019-08-05

Applicant: Eaton Intelligent Power Limited

Inventor： Jonathan Michael Schaar ,  Tiefu Zhao

IPC: G05F1/20 ,  H02J4/00 ,  H02J3/18

Abstract: An apparatus for a load tap changer includes a first primary winding electrically connected to a first contact, the first contact configured to connect to one of a plurality of taps in a load tap changer; a second contact, the second contact configured to connect to one of the plurality of taps in the load tap changer; a magnetic core; and a control circuit including: a secondary winding configured to magnetically couple to the first primary winding and the magnetic core; and an electrical network electrically connected to the secondary winding, the electrical network being configured to prevent magnetic saturation of the magnetic core during switching of the first or second contact.

公开(公告)号：US10020802B2

公开(公告)日：2018-07-10

申请号：US15634891

申请日：2017-06-27

Applicant: Eaton Intelligent Power Limited

Inventor： Tiefu Zhao ,  Jiangbiao He ,  Yakov Lvovich Familiant ,  Mengbin Ben Yang

IPC: H03K3/00 ,  H03K17/284

CPC classification number: H03K17/284 ,  H03K3/012 ,  H03K17/127 ,  H03K17/56 ,  H03K17/567 ,  H03K2217/0027 ,  H03K2217/0036

Abstract: An integrated circuit is provided with an MCU, which is configured to generate a PWM control signal that is free of switching pattern information therein. A current-estimating gate driver is provided, which is responsive to the PWM signal. This gate driver is configured to drive first and second gate terminals of first and second parallel switching devices (within a hybrid switch) with gate signals that establish a second switching pattern within the hybrid switch. These gate driving operations are performed in response to measuring a first voltage associated with a terminal of the hybrid switch when being driven by gate signals that establish a first switching pattern within the hybrid switch that is different from the second switching pattern. The duty cycles of the gate signals associated with the second switching pattern are unequal and the duty cycles of the gate signals associated with the first switching pattern are unequal.

公开(公告)号：US20210165433A1

公开(公告)日：2021-06-03

申请号：US17116522

申请日：2020-12-09

Applicant: Eaton Intelligent Power LImited

Inventor： Jonathan Michael Schaar ,  Tiefu Zhao

IPC: G05F1/20 ,  H02J3/18 ,  H02J4/00

Abstract: An apparatus for a load tap changer includes a first primary winding electrically connected to a first contact, the first contact configured to connect to one of a plurality of taps in a load tap changer; a second contact, the second contact configured to connect to one of the plurality of taps in the load tap changer; a magnetic core; and a control circuit including: a secondary winding configured to magnetically couple to the first primary winding and the magnetic core; and an electrical network electrically connected to the secondary winding, the electrical network being configured to prevent magnetic saturation of the magnetic core during switching of the first or second contact.

公开(公告)号：US10890932B2

公开(公告)日：2021-01-12

申请号：US16531440

申请日：2019-08-05

Applicant: Eaton Intelligent Power Limited

Inventor： Jonathan Michael Schaar ,  Tiefu Zhao

IPC: G06F1/20 ,  G05F1/20 ,  H02J3/18 ,  H02J4/00

Abstract: An apparatus for a load tap changer includes a first primary winding electrically connected to a first contact, the first contact configured to connect to one of a plurality of taps in a load tap changer; a second contact, the second contact configured to connect to one of the plurality of taps in the load tap changer; a magnetic core; and a control circuit including: a secondary winding configured to magnetically couple to the first primary winding and the magnetic core; and an electrical network electrically connected to the secondary winding, the electrical network being configured to prevent magnetic saturation of the magnetic core during switching of the first or second contact.