Patents by Inventor Jian-Yi Hong

Jian-Yi Hong 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).

  • Single-stage zero-current switching driving circuit for ultrasonic motor
    Patent number: 8299747
    Abstract: The present invention relates to a single-stage zero-current switching driving circuit for ultrasonic motor, which comprises: a buck-boost converter and a zero-current switching resonant inverter. The driving circuit according to the present invention integrates the buck-boost converter and the resonant inverter into a single-stage structure, so that the buck-boost converter and the resonant inverter share an active switch and a trigger signal, and therefore, the circuit is simplified and the loss caused by stage switching is reduced. Moreover, the buck-boost converter operates in a discontinuous-conduction mode (DCM), which allows the circuit to have high power factor, and enables the active switch to be capable of zero-current switching (ZCS), so that the loss caused by switching is largely reduced. In the driving circuit according to the present invention, there's no interaction of power between the buck-boost converter and the resonant inverter, so that the two circuits can be analyzed individually.
    Type: Grant
    Filed: October 25, 2010
    Date of Patent: October 30, 2012
    Assignee: Metal Industries Research & Development Centre
    Inventors: Yao-Ching Hsieh, Cheng-Yen Chen, Jian-Yi Hong, Po-Wen Hsueh
  • SINGLE-STAGE ZERO-CURRENT SWITCHING DRIVING CIRCUIT FOR ULTRASONIC MOTOR
    Publication number: 20110095711
    Abstract: The present invention relates to a single-stage zero-current switching driving circuit for ultrasonic motor, which comprises: a buck-boost converter and a zero-current switching resonant inverter. The driving circuit according to the present invention integrates the buck-boost converter and the resonant inverter into a single-stage structure, so that the buck-boost converter and the resonant inverter share an active switch and a trigger signal, and therefore, the circuit is simplified and the loss caused by stage switching is reduced. Moreover, the buck-boost converter operates in a discontinuous-conduction mode (DCM), which allows the circuit to have high power factor, and enables the active switch to be capable of zero-current switching (ZCS), so that the loss caused by switching is largely reduced. In the driving circuit according to the present invention, there's no interaction of power between the buck-boost converter and the resonant inverter, so that the two circuits can be analyzed individually.
    Type: Application
    Filed: October 25, 2010
    Publication date: April 28, 2011
    Applicant: METAL INDUSTRIES RESEARCH & DEVELOPMENT CENTRE
    Inventors: YAO-CHING HSIEH, CHENG-YEN CHEN, JIAN-YI HONG, PO-WEN HSUEH