公开(公告)号：US11239746B2

公开(公告)日：2022-02-01

申请号：US16783310

申请日：2020-02-06

Applicant: SUNGROW POWER SUPPLY CO., LTD.

Inventor： Tao Zhao ,  Fushuai Zhuang ,  Xinyu Wang ,  Jiacai Zhuang ,  Mingda Wang ,  Yuan Zhuang

IPC: H02M1/36 ,  H02M1/08 ,  H02M3/335 ,  H02M7/5387 ,  H02J3/38 ,  H02M1/00

Abstract: A two-stage converter, a method for starting the two-stage converter, an LLC converter, and an application system are provided. A controller of the LLC converter of the two-stage converter first controls a main circuit of the LLC converter to perform hiccup charging on a direct current bus of a later-stage converter at a preset interval, so that the direct current bus voltage of the later-stage converter gradually increases, until an auxiliary power supply of the later-stage converter starts to operate, to supply power to the controller of the later-stage converter. After the controller of the later-stage converter reports the detected direct current bus voltage, the controller of the LLC converter determines whether the output voltage of the LLC converter increases to a hiccup starting voltage. If so, the controller of the LLC converter controls the main circuit to operate in a hiccup voltage stabilization phase.

公开(公告)号：US20220216918A1

公开(公告)日：2022-07-07

申请号：US17610126

申请日：2021-03-16

Applicant: Sungrow Power Supply Co., Ltd.

Inventor： Yuqing Cui ,  Jiacai Zhuang ,  Fushuai Zhuang ,  Yuan Zhuang ,  Jun Xu

IPC: H04B10/2575 ,  H04B10/40

Abstract: A method for controlling data transmission and reception and an application system thereof are provided. In the method, the peer-to-peer communication system is initialized to set each communication unit in the peer-to-peer communication system to be in a data receiving state. A communication host controls, according to a communication status of the peer-to-peer communication system, a controlled electrical connection path between the communication host and a communication interface to the communication transmission path, to work in a mode allowing data transmission from the communication slave to a communication host side of the controlled electrical connection path, or a mode allowing data transmission from the communication host side of the controlled electrical connection path to the communication slave.

公开(公告)号：US12261643B2

公开(公告)日：2025-03-25

申请号：US17610126

申请日：2021-03-16

Applicant: Sungrow Power Supply Co., Ltd.

Inventor： Yuqing Cui ,  Jiacai Zhuang ,  Fushuai Zhuang ,  Yuan Zhuang ,  Jun Xu

IPC: H04B10/00 ,  H04B10/2575 ,  H04B10/40

Abstract: A method for controlling data transmission and reception and an application system thereof are provided. In the method, the peer-to-peer communication system is initialized to set each communication unit in the peer-to-peer communication system to be in a data receiving state. A communication host controls, according to a communication status of the peer-to-peer communication system, a controlled electrical connection path between the communication host and a communication interface to the communication transmission path, to work in a mode allowing data transmission from the communication slave to a communication host side of the controlled electrical connection path, or a mode allowing data transmission from the communication host side of the controlled electrical connection path to the communication slave.

公开(公告)号：US20240313639A1

公开(公告)日：2024-09-19

申请号：US18576332

申请日：2022-06-10

Applicant: Sungrow Power Supply Co., Ltd.

Inventor： Yuan Zhuang ,  Yuquing Cui ,  Fushuai Zhuang ,  Jiacai Zhuang ,  Jun Xu

IPC: H02M1/32 ,  H02J3/38 ,  H02M7/48

CPC classification number: H02M1/327 ,  H02J3/38 ,  H02M7/48

Abstract: An energy conversion system, and a method and a device for controlling the energy conversion system at an overtemperature are provided. The energy conversion system includes at least one power conversion circuit each including at least two power modules that are cascaded. Respective operating temperatures of all the power modules are measured in real time, to determine the overheated power module that is operating at an overtemperature and the underheated power module that is operating at a normal temperature. Once an overheated power module is detected, a decreased power and a power difference for the overheated power module are acquired, and an increased power for the underheated power module is determined based on the power difference. The operating power of the overheated power module is decreased at the module level with the total operating power of the system remains constant or approximately constant.