-
公开(公告)号：US11437806B2
公开(公告)日：2022-09-06
申请号：US16839265
申请日：2020-04-03
Applicant: Eaton Intelligent Power Limited
Inventor： Huaqiang Li
Abstract: An electrical apparatus configured to electrically connect to a multi-phase alternating current (AC) electrical power distribution network includes: an input electrical network including: a plurality of input nodes, each configured to electrically connect to one phase of the multi-phase AC electrical power distribution network; at least one non-linear electronic component electrically connected to the input electrical network; an impedance network electrically connected between the input electrical network and ground; and a control system configured to: access a voltage signal that represents a voltage over time at the input electrical network; determine a frequency content of the voltage signal; determine a property of the frequency content; and determine whether an input current performance condition exists in the electrical apparatus based the property of the frequency content.
-
公开(公告)号：US20220037875A1
公开(公告)日：2022-02-03
申请号：US17501096
申请日：2021-10-14
Applicant: Eaton Intelligent Power Limited
Inventor： Huaqiang Li , Joseph Paul Uphaus
IPC: H02H7/122 , H02M7/5387 , H02M5/458 , H02M1/32 , H02P7/29 , H02M7/00 , H02M7/493 , H02P27/04 , H02J9/06 , H02P1/02
Abstract: A compact motor control system for selectively controlling power from a power source to a load includes a motor switching assembly having a solid state contactor with a plurality of solid state switches. The motor switching assembly also includes at least one direct current (DC) link coupled to the solid state contactor and redundant first and second inverters coupled to the at least one DC link. The motor switching assembly further includes a first relay coupled between the solid state contactor and an input of the inverter and a second relay coupled between the solid state contactor and an input of the second inverter. In addition, the motor control system includes a control system programmed to control the motor switching assembly to selectively supply power to the load from the power source.
-
公开(公告)号：US20210359621A1
公开(公告)日：2021-11-18
申请号：US17313322
申请日：2021-05-06
Applicant: Eaton Intelligent Power Limited
Inventor： Huaqiang Li , Xiaoling Li , Belly Lei
Abstract: A system includes: a pre-charge circuit configured to produce direct current (DC) electrical power; a common DC bus; and a plurality of inverters, each inverter including: a local DC bus; a capacitor network connected to the local DC bus; an electrical network connected to the local DC bus, the electrical network configured to generate an alternating current (AC) drive signal; and a plurality of switching assemblies, each switching assembly being associated with one of the inverters, and each switching assembly configured to control whether the local DC bus and the capacitor network of the associated inverter are electrically connected to the common DC bus or to the pre-charge circuit.
-
公开(公告)号：US20240258934A1
公开(公告)日：2024-08-01
申请号：US18393144
申请日：2023-12-21
Applicant: Eaton Intelligent Power Limited
Inventor： Huaqiang Li
Abstract: A power converter includes: a filter system including a plurality of input nodes, each input node configured to electrically connect to one phase of a multi-phase AC electrical power distribution network; an electrical network including a plurality of intermediate nodes, each intermediate node electrically connected to one phase of the filter system, the electrical network configured to convert alternating current (AC) to direct current (DC), the electrical network including a plurality of electronic switches; a DC link electrically connected to the electrical network and configured to receive the DC current from the electrical network; and a control system configured to: estimate an unbalance metric at the intermediate nodes; and control the electronic switches to compensate for the estimated unbalance metric to thereby reduce an amplitude of a ripple current in the DC current.
-
公开(公告)号：US11843331B2
公开(公告)日：2023-12-12
申请号：US17887859
申请日：2022-08-15
Applicant: Eaton Intelligent Power Limited
Inventor： Yaojin Mo , Huaqiang Li , Jimmy Qi , Tony Zhao , Hao Cai
Abstract: A system for determining an initial angular position of a rotor of a synchronous machine includes a motor driver module configured to provide a motor driver voltage signal to the synchronous machine, the motor driver voltage signal being sufficient to induce an electrical current in the synchronous machine; and a rotor position determination module configured to receive an indication of the current generated in the machine and to determine the initial position of the rotor based on the indication of the current generated in the machine.
-
Patent Agency Ranking
公开(公告)号：US20230261561A1
公开(公告)日：2023-08-17
申请号：US17672432
申请日：2022-02-15
Applicant: Eaton Intelligent Power Limited
Inventor： Huaqiang Li
CPC classification number: H02M1/12 , H02M5/458 , H02M1/0009 , H02J3/01 , H02P27/08
Abstract: A bi-directional power converter includes: a plurality of input nodes, each input node configured to electrically connect to one phase of a multi-phase AC electrical power distribution network; and an electrical network configured to convert alternating current (AC) to direct current (DC) and to convert DC current to AC current, the electrical network including a plurality of electronic switches. The bi-directional power converter also includes a control system configured to: estimate harmonic voltage content at three intermediate nodes in the bi-directional power converter based on a measured electrical quantity; and control the electronic switches to compensate for the estimated harmonic voltage content.
-
公开(公告)号：US11575256B2
公开(公告)日：2023-02-07
申请号：US16756310
申请日：2018-08-29
Applicant: EATON INTELLIGENT POWER LIMITED
Inventor： Huaqiang Li , Xin Zhou
Abstract: A matrix converter includes one or more current sensors structured to sense current flowing through the matrix converter, a matrix of switches including a number of solid state transistors, and a control circuit structured to detect faults in power flowing through the matrix converter based on the sensed current, to control the matrix of switches to drive an external device, and to control the matrix of switches to switch to prevent power from flowing internal to the matrix converter, or external to the external device in response to detecting a fault in power flowing through the matrix converter.
-
公开(公告)号：US11418141B2
公开(公告)日：2022-08-16
申请号：US17004410
申请日：2020-08-27
Applicant: Eaton Intelligent Power Limited
Inventor： Adam Krug , Huaqiang Li
Abstract: A motor driver apparatus includes: a converter including a first electrical network configured to convert AC electrical power into DC electrical power, the first electrical network including at least one electronic element that includes a wide bandgap semiconductor material; and an inverter electrically connected to the converter, the inverter including a second electrical network configured to generate an AC motor power signal from the DC electrical power, the second electrical network includes a plurality of electronic elements that include a semiconductor material that is not a wide bandgap semiconductor material.
-
29.发明申请公开(公告)号：US20220014012A1
公开(公告)日：2022-01-13
申请号：US17484755
申请日：2021-09-24
Applicant: Eaton Intelligent Power Limited
Inventor： Huaqiang Li , Seth O'Brien , Thomas M. Ruchti
Abstract: A power conversion circuit having a solid-state circuit breaker integrated therein is disclosed. With a disconnect switch between a utility source and the power conversion apparatus described for meeting UL489, the power conversion circuit includes an input connectable to an AC source, a rectifier circuit connected to the input to convert an AC power input to a DC power, and a DC link coupled to the rectifier circuit to receive the DC power therefrom. The rectifier circuit comprises a plurality of phase legs each including thereon an upper switching unit and a lower switching unit, wherein at least one of the upper and lower switching units on each phase leg comprises a bi-directional switching unit that selectively controls current and withstands voltage in both directions, so as to provide a circuit breaking capability that selectively interrupts current flow through the rectifier circuit, while maintaining original power conversion functionalities.
-
30.发明授权公开(公告)号：US11139649B2
公开(公告)日：2021-10-05
申请号：US15854118
申请日：2017-12-26
Applicant: Eaton Intelligent Power Limited
Inventor： Huaqiang Li , Joseph Paul Uphaus
IPC: H02H7/122 , H02P27/06 , H02M7/00 , H02M5/458 , H02P27/02 , H02M7/5387 , H02M1/32 , H02P3/18 , H02H3/16 , H02P1/30 , H02H3/033 , H02P1/28 , H02H3/06
Abstract: A motor control system includes a motor switching assembly comprising a power converter positioned on a converter path, a first relay positioned on the converter path upstream of the power converter, a second relay positioned on a bypass path that is in parallel with the converter path, and a solid-state switching unit positioned upstream from the converter path and the bypass path. The motor control system also includes a control system that controls operation of the motor switching assembly, with the control system programmed to operate the solid-state switching unit in one of a conducting mode, a non-conducting mode, and a ramping mode, so as to selectively control and condition power flow therethrough. The control system is also programmed to control switching of the first and second relays between open and closed positions to selectively route power along the converter path or the bypass path.
-
-
-
-
-
-
-
-
-
Search Results
31
records
(took 0.025 seconds)
