Patents by Inventor Congwen Lu

Congwen Lu 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).

  • Method and device for monitoring circuit breaker
    Patent number: 10408877
    Abstract: Embodiments of the present disclosure provide a method for monitoring a circuit breaker, comprising the following steps: obtaining a characteristic force associated with an actuating mechanism of the circuit breaker over the time; and determining the time point when the closing and/or opening of the circuit breaker occurs by identifying a variation of the force. The step of determining further comprises determining the moment when a variation increase of the characteristic force occurs as the time point of the closing of the circuit breaker; and determining the moment when a variation decrease of the characteristic force occurs as the time point of the opening of the circuit breaker. The method can be used to accurately on-line monitor the closing and opening time point of the circuit breaker.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: September 10, 2019
    Assignee: ABB Schweiz AG
    Inventors: Zhijian Zhuang, Xin Ye, Congwen Lu
  • METHOD AND DEVICE FOR MONITORING CIRCUIT BREAKER
    Publication number: 20160299192
    Abstract: Embodiments of the present disclosure provide a method for monitoring a circuit breaker, comprising the following steps: obtaining a characteristic force associated with an actuating mechanism of the circuit breaker over the time; and determining the time point when the closing and/or opening of the circuit breaker occurs by identifying a variation of the force. The step of determining further comprises determining the moment when a variation increase of the characteristic force occurs as the time point of the closing of the circuit breaker; and determining the moment when a variation decrease of the characteristic force occurs as the time point of the opening of the circuit breaker. The method can be used to accurately on-line monitor the closing and opening time point of the circuit breaker.
    Type: Application
    Filed: June 17, 2016
    Publication date: October 13, 2016
    Inventors: Zhijian Zhuang, Xin Ye, Congwen Lu