Patents by Inventor Huafeng Mao

Huafeng Mao has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20230409796
    Abstract: An impedance matching method for a CLC branch of a low-frequency resonance suppression device is provided, which includes: establishing an equivalent circuit model for a power supply system with a low-frequency resonance suppression device joined in; obtaining, according to a target low-frequency harmonic frequency band and the equivalent circuit model, a constraint required by the power supply system for suppressing low-frequency harmonics; constructing an objective function based on a low-frequency harmonic suppression rate in a bus of the power supply system; obtaining a multi-constraint objective optimization function of CLC branch impedance based on the constraint and the objective function; and solving the multi-constraint objective optimization function through an improved harmony search algorithm to obtain an impedance parameter of the CLC branch. The present disclosure can ensure a low-frequency harmonic suppression effect for the power supply system.
    Type: Application
    Filed: April 13, 2023
    Publication date: December 21, 2023
    Inventors: Jing LU, Pengfei WANG, Liuwei XU, Yanan WU, Zhiwei MAO, Huafeng MAO, Jun LI, Yunxiang TIAN
  • Publication number: 20230369920
    Abstract: A motor component, a motor and a motor vehicle are disclosed. The motor component has a body extending along a rotation axis of the motor, the body being formed by a set of laminations, and an axially extending cavity being provided on the body; and wherein at least one elongated lamination-holding component is provided in the body, and the lamination-holding component is inserted into the axially extending cavity and is coupled to the body inside the axially extending cavity.
    Type: Application
    Filed: September 28, 2021
    Publication date: November 16, 2023
    Applicant: Valeo Automotive ePowertrain Systems (Shanghai) Co., Ltd.
    Inventors: Huafeng MAO, Renlong YING, Xuehua ZHANG, Wei ZHU, Robin BUESCH, Andreas ECKERT
  • Patent number: 10647009
    Abstract: The present application discloses a routing unit. A routing unit comprises a first rotation portion, a second rotation portion and one or more baffles; and the routing unit is divided into two or more spaces by the baffles, thereby each space is capable of respectively enclosing a single member therein; wherein the first rotation portion rotates with respect to the second rotation portion; and a first portion of each single member is connected to the first rotation portion and a second portion of each member is connected to the second rotation portion. The present application also provides a rotary joint comprising the routing unit and a robot comprising the rotary joint. Compared with the existing prior arts, embodiments of the proposed solution are compact, easy for assembly or disassembly, and enable a large rotation range.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: May 12, 2020
    Assignee: ABB Schweiz AG
    Inventors: Kaiyuan Cao, Jianqiang Jia, Xiaodong Cao, Huafeng Mao
  • Publication number: 20170197319
    Abstract: The present application discloses a routing unit. A routing unit comprises a first rotation portion, a second rotation portion and one or more baffles; and the routing unit is divided into two or more spaces by the baffles, thereby each space is capable of respectively enclosing a single member therein; wherein the first rotation portion rotates with respect to the second rotation portion; and a first portion of each single member is connected to the first rotation portion and a second portion of each member is connected to the second rotation portion. The present application also provides a rotary joint comprising the routing unit and a robot comprising the rotary joint. Compared with the existing prior arts, embodiments of the proposed solution are compact, easy for assembly or disassembly, and enable a large rotation range.
    Type: Application
    Filed: March 24, 2017
    Publication date: July 13, 2017
    Inventors: Kaiyuan Cao, Jianqiang Jia, Xiaodong Cao, Huafeng Mao