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：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：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：US20230238874A1

公开(公告)日：2023-07-27

申请号：US18295925

申请日：2023-04-05

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Jinfeng GAO ,  Weichen HE ,  Yuan YAO ,  Yu YAN

IPC: H02M1/00 ,  H02M3/00

CPC classification number: H02M1/0054 ,  H02M3/01 ,  H02M1/0009

Abstract: An isolated resonant conversion control apparatus includes a voltage and current obtaining unit configured to obtain an output voltage and an output current of an output-side switch transistor of an isolated resonant conversion unit, and a processing unit configured to calculate a switching frequency of an input-side switch transistor of the isolated resonant conversion unit based on the output voltage and the output current, obtain a turn-on offset time and a turn-off offset time of the output-side switch transistor relative to the input-side switch transistor based on the switching frequency of the input-side switch transistor, obtain a duty ratio of a second driving signal based on a duty ratio of a first driving signal, the turn-on offset time, and the turn-off offset time, and generate the second driving signal based on the switching frequency and the duty ratio of the second driving signal.

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.