Patents by Inventor Ryong CHOE

Ryong CHOE 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).

  • Power system for electric vehicle and control method thereof
    Patent number: 9487105
    Abstract: Disclosed are a power system for an electric vehicle and a control method of a power system for an electric vehicle. The power system may include a first motor and a second motor configured as a power source, first and second reduction gears connected to the first and second motors and having different deceleration ratios, a driving shaft transmitting outputs of the first and second reduction gears, and a motor controller configured to determine a first driving point where the first motor responds according to a demand torque of a driver and a driving condition of the vehicle and a second driving point where the second motor responds according to the demand torque of the driver and the driving condition of the vehicle, and control driving by using at least one of an output torque of the first motor and/or an output torque of the second motor according to the determined driving point.
    Type: Grant
    Filed: July 15, 2014
    Date of Patent: November 8, 2016
    Assignee: Hyundai Motor Company
    Inventors: Yong Gi Kim, Tal Chol Kim, Ryong Choe
  • POWER SYSTEM FOR ELECTRIC VEHICLE AND CONTROL METHOD THEREOF
    Publication number: 20150171774
    Abstract: Disclosed are a power system for an electric vehicle and a control method of a power system for an electric vehicle. The power system may include a first motor and a second motor configured as a power source, first and second reduction gears connected to the first and second motors and having different deceleration ratios, a driving shaft transmitting outputs of the first and second reduction gears, and a motor controller configured to determine a first driving point where the first motor responds according to a demand torque of a driver and a driving condition of the vehicle and a second driving point where the second motor responds according to the demand torque of the driver and the driving condition of the vehicle, and control driving by using at least one of an output torque of the first motor and/or an output torque of the second motor according to the determined driving point.
    Type: Application
    Filed: July 15, 2014
    Publication date: June 18, 2015
    Applicant: Hyundai Motor Company
    Inventors: Yong Gi KIM, Tal Chol Kim, Ryong CHOE