Patents by Inventor Jiahao WANG

Jiahao WANG 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: 20220366115
    Abstract: A general decoupling method and system for electromagnetic transient simulation of a VSC are provided. The method includes: determining state equations of equivalent circuits and switch state tables of different VSCs; splitting the state equations, and decoupling and delaying capacitor elements and inductor elements to determine split equations; determining a recurrence relation of a state variable group with respect to a time sequence based on each split equation; obtaining a topological structure of a to-be-simulated VSC, and determining a decoupling model circuit; determining a switch state of the to-be-simulated VSC at a current simulation moment, and constructing a final decoupling model circuit; determining an external port voltage based on the final decoupling model circuit; and updating the state variable group at the current simulation moment based on the external port voltage and the parameters of the decoupling model circuit corresponding to the switch state.
    Type: Application
    Filed: November 30, 2021
    Publication date: November 17, 2022
    Inventors: Shujun Yao, Bohan Pang, Mingwang Xu, Ziwen Zeng, Zijian Qiu, Gang Liu, Chunqiang Zhang, Jiahao Ma, Yan Wang, Jin Liu, Yifan Yao, Mengtong Wu
  • Patent number: 11426702
    Abstract: A method and a system for treatment of a spent chloroaluminate ionic liquid catalyst and an alkaline wastewater, where the method includes: 1) mixing the catalyst with a concentrated brine for hydrolysis reaction until residual activity of the catalyst is completely eliminated, to obtain an acidic hydrolysate and an acid-soluble oil; 2) mixing the acidic hydrolysate with an alkaline solution containing the alkaline wastewater for neutralization reaction until this reaction system becomes weak alkaline, to obtain a neutralization solution; 3) fully mixing the neutralization solution with a flocculant, carrying out sedimentation and separation, collecting the concentrated brine at an upper layer for reuse in the hydrolysis reaction, and collecting concentrated flocs at a lower layer; 4) dehydrating the concentrated flocs to obtain concentrated brine for reuse into the hydrolysis reaction, and collecting a wet solid slag; and 5) drying the wet solid slag to obtain a dry solid slag.
    Type: Grant
    Filed: August 28, 2020
    Date of Patent: August 30, 2022
    Inventors: Chunmao Chen, Zhichang Liu, Zhongjin Yi, Rui Zhang, Jiahao Liang, Xianghai Meng, Haiyan Liu, Chunming Xu, Qinghong Wang
  • Patent number: 11392586
    Abstract: Disclosed are a data protection method and device and a storage medium. The method includes that a database execution engine receives data request information sent by a client; a preset policy corresponding to an identity of the client carried in the data request information is acquired and the database execution engine performs a data protection operation for requested data according to the preset policy to obtain target data; and the database execution engine sends the target data to the client.
    Type: Grant
    Filed: April 1, 2019
    Date of Patent: July 19, 2022
    Inventors: Jiahao Niu, Qiang Zhang, Shanhong Shen, Dezheng Wang
  • Patent number: 11374404
    Abstract: Disclosed is a low-voltage DC power distribution fast switching device. The device includes a positive output terminal electrically connected to a positive pole of a load, and no less than two switching circuits connected in parallel with each other; the switching circuit includes a positive input terminal electrically connected to a positive pole of common negative power supplies, a supplementary diode cluster composed of no less than one diode connected in series, and a thyristor connected between the positive input terminal and the positive output terminal; the positive input terminal is electrically connected to an anode of the supplementary diode cluster and an anode of the thyristor, and the positive output terminal is electrically connected to a cathode of the complementary diode cluster and a cathode of the thyristor.
    Type: Grant
    Filed: August 26, 2020
    Date of Patent: June 28, 2022
    Assignees: State Grid Jiangsu Electric Power Co., Ltd. Research Institute, State Grid Corporation of China, State Grid Jiangsu Electric Power Co., Ltd., Jiangsu Electric Power Research Institute Co., Ltd.
    Inventors: Yubo Yuan, Tiankui Sun, Jinggang Yang, Xiaodong Yuan, Lei Gao, Mingming Shi, Peng Li, Wei Su, Kun Yang, Xinyao Si, Jianhua Qin, Xin Fang, Xiaolong Xiao, Ruihuang Liu, Chenqing Wang, Jiahao Guo, Yunlong Jiang, Shuyi Zhuang, Qun Li, Jian Liu, Shu Chen
  • Patent number: 11371532
    Abstract: An inlet collector for a centrifugal fan and a centrifugal fan are provided. By arranging a tragus-shaped section in a guiding section, reverse flow caused by intersection of inlet leakage flow at a volute tongue side and inlet airflow is blocked by the tragus-shaped structure in movement process, and the leakage flow no longer collide with the inlet airflow. An inner curved surface of the tragus-shaped section controls backflow to change smoothly along an inner wall surface of the tragus-shaped section and re-enter a volute for circulation. A tragus profile is adopted to guide the airflow to change more smoothly in the velocity direction near the wall of the guiding section, so as to effectively reduce the impact of the inlet airflow on the guiding section. By using the inlet collector, energy loss of airflow is reduced, vortex formation is suppressed, and aerodynamic performance and fan noise are improved.
    Type: Grant
    Filed: January 18, 2022
    Date of Patent: June 28, 2022
    Inventors: Xiaomin Liu, Chenye Tian, Jiahao Wang, Guang Xi
  • Publication number: 20220064763
    Abstract: Provided is a method for preparing an amorphous strip master alloy. The method includes: providing an amorphous alloy and cementite Fe3C; and placing the amorphous alloy and the cementite Fe3C in a smelting furnace for smelting treatment to obtain the amorphous strip master alloy, wherein elements constituting the amorphous alloy include Fe element, Si element and B element. An amorphous strip master alloy prepared by the preparation method is also provided.
    Type: Application
    Filed: January 9, 2020
    Publication date: March 3, 2022
    Inventors: Jingran WANG, Jiahao WANG, Jiahui WANG
  • Publication number: 20220018010
    Abstract: Provided is a method for increasing magnetic induction intensity of soft magnetic metallic materials. The method includes carburizing or carbonitriding the soft magnetic metallic materials with carbon source or a carbonitriding agent by a heat treatment process, to increase the magnetic induction intensity of the soft magnetic metallic materials, wherein the soft magnetic metallic materials are amorphous materials, nanocrystals, silicon steel, or pure iron.
    Type: Application
    Filed: November 13, 2019
    Publication date: January 20, 2022
    Inventors: Jingran WANG, Jiahao WANG, Jiahui WANG