公开(公告)号：US20230369987A1

公开(公告)日：2023-11-16

申请号：US18225164

申请日：2023-07-24

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Guiying LIN ,  Jinfeng GAO ,  Weichen HE

IPC: H02M7/217 ,  H02M1/12 ,  G01R21/07

CPC classification number: H02M7/217 ,  H02M1/12 ,  G01R21/07

Abstract: The present application provides a method and apparatus for suppressing grid voltage imbalance. By obtaining a 90° lagged grid voltage through a differential tracker, calculating instantaneous power using the 90° lagged grid voltage, and then calculating a power converter voltage according to the instantaneous power, the suppression of grid voltage imbalance may be achieved.

公开(公告)号：US20230253886A1

公开(公告)日：2023-08-10

申请号：US18187112

申请日：2023-03-21

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yuan YAO ,  Weichen HE ,  Guiying LIN ,  Huaisen ZHANG ,  Jinfeng GAO ,  Yu YAN

IPC: H02M3/335 ,  H02M3/00

CPC classification number: H02M3/3353 ,  H02M3/01

Abstract: A voltage conversion circuit includes an N-level conversion unit and N-1 DC-DC conversion units. The N-level conversion unit includes N output terminals at different levels. A first input terminal of the Mth DC-DC conversion unit is connected to the Mth output terminal of the N-level conversion unit, and a second input terminal of the Mth DC-DC conversion unit is connected to an (M+1)th output terminal of the N-level conversion unit. An output level of the Mth output terminal and an output level of the (M+1)th output terminal are adjacent levels. N and M are positive integers and satisfy N ≤ 3 and 1 ≥ M

公开(公告)号：US20240006980A1

公开(公告)日：2024-01-04

申请号：US18354397

申请日：2023-07-18

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Meng WU ,  Guiying LIN ,  Jinfeng GAO

IPC: H02M1/00 ,  H02M1/36 ,  H02M3/335 ,  H02J7/00

CPC classification number: H02M1/0067 ,  H02M1/36 ,  H02M3/33576 ,  H02M3/33573 ,  H02J7/00712 ,  H02J2207/20

Abstract: A series-parallel switching method and apparatus, a power conversion circuit, and an electronic device are provided. The power conversion circuit includes a control unit and two power conversion modules. The two power conversion modules are connected in series or connected in parallel. Either of the power conversion modules includes output terminals and first switch branches, where the first switch branches are connected to the output terminals, and the output terminals are configured to connect to a load. The first switch branches are connected to the control unit, and the first switch branches are configured to switch an operating state according to a control signal output by the control unit, to provide an energy discharge loop when the two power conversion modules are switched from a parallel connection to a series connection, where the operating state includes a stopping state and a running state.

公开(公告)号：US20240014726A1

公开(公告)日：2024-01-11

申请号：US18471291

申请日：2023-09-21

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Guiying LIN ,  Meng WU ,  Jinfeng GAO

IPC: H02M1/00 ,  H02M7/217

CPC classification number: H02M1/0012 ,  H02M7/2173

Abstract: A method for controlling a rectifier includes determining reactive power and active power according to sampled voltages and sampled currents of a three-phase alternating current signal, determining given active power according to a given voltage and a sampled voltage of a direct current signal, determining a target voltage vector for model predictive control according to the active power, the reactive power, the given active power, and a damping-injected Hamiltonian dissipative model, performing the model predictive control according to the target voltage vector to obtain a control signal for the rectifier, and controlling the rectifier according to the control signal.

公开(公告)号：US20230144700A1

公开(公告)日：2023-05-11

申请号：US17866806

申请日：2022-07-18

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yuan YAO ,  Weichen HE ,  Huaisen ZHANG ,  Guiying LIN ,  Jinfeng GAO ,  Zhimin DAN

IPC: H02M1/42 ,  H02J3/32

CPC classification number: H02M1/4241 ,  H02J3/322 ,  H02M1/4266

Abstract: This application discloses an electrical system and an electrical apparatus. The electrical system includes: a first-stage conversion module including a plurality of first controllable switches; a second-stage conversion module including a plurality of second controllable switches; a first digital signal processor configured to control the first controllable switch; and a second digital signal processor configured to control the second controllable switch, where a first output crossbar switch of the first digital signal processor is configured to supply a first internal signal to a first output port, so that the second digital signal processor receives the first internal signal within a preset time through a second input port. The internal signal of the first digital signal processor can be enabled to be transmitted to the second digital signal processor within a relatively short time, thereby reducing a time interval for triggering a protection action between the two digital signal processors.

公开(公告)号：US20230208181A1

公开(公告)日：2023-06-29

申请号：US17903853

申请日：2022-09-06

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Huaisen ZHANG ,  Yuan YAO ,  Meng LI ,  Weichen HE ,  Guiying LIN ,  Yu YAN

IPC: H02J7/00

CPC classification number: H02J7/007194 ,  H02J7/00032 ,  H02J7/00309 ,  H02J7/0013

Abstract: The present application relates to a method and apparatus of power distribution control for power module and a power module device. The method includes: obtaining temperature data of target devices in two or more power modules; analyzing whether the power modules are operating at full power when the temperature data of the target devices meets a preset temperature fault condition; and adjusting operating parameters of the power modules based on the temperature data when the power modules are not operating at full power.

公开(公告)号：US20220345023A1

公开(公告)日：2022-10-27

申请号：US17856453

申请日：2022-07-01

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Jinfeng GAO ,  Guiying LIN ,  Weichen HE ,  Zhimin DAN ,  Lijun HANG ,  Yuanbin HE ,  Ke CHEN ,  Jiarui LIAO

IPC: H02M1/00 ,  H02M3/24 ,  H02M3/00

Abstract: Embodiments of this application provide a converter control method, a converter control apparatus, and a readable storage medium. The control method includes: obtaining a real-time input voltage and a real-time output voltage of a converter; determining a corresponding real-time closed-loop control output value of the converter based on the real-time input voltage and the real-time output voltage by using a closed-loop control algorithm; determining a real-time control strategy of a switch tube of the converter from at least three control strategies based on the real-time closed-loop control output value; and controlling the switch tube based on the determined real-time control strategy. The control method is used to implement efficient and high-precision voltage stabilization control.