Patents by Inventor Po-Jen HOU

Po-Jen HOU 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 converting device and ground impedance value detecting method
    Patent number: 10505437
    Abstract: A power converting device includes a DC-DC converting circuit, a DC-AC converting circuit, and an insulation detecting circuit. The DC-DC converting circuit is configured to convert a DC input voltage to a DC bus voltage. The DC-AC converting circuit is electrically coupled to the DC-DC converting circuit and configured to convert the DC bus voltage to an AC voltage. The insulation detecting circuit is electrically coupled between the DC-DC converting circuit and the DC-AC converting circuit. The insulation detecting circuit is configured to detect a ground impedance value of the power converting device according to the DC bus voltage.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: December 10, 2019
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Tsung-Han Tsai, Po-Jen Hou, Chen-Wei Ku, Xin-Hung Lin
  • Insulation detecting circuit, power converting device and insulation impedance value detecting method
    Patent number: 9906134
    Abstract: An insulation detecting circuit includes a first switching unit, a second switching unit, a detecting resistor, a processing unit, and a voltage detecting unit. The second switching unit is electrically coupled to the first switching unit. The processing unit is configured to control the first and the second switching units. The voltage detecting unit obtains a first voltage value across the detecting resistor when the processing unit controls the first switching unit to be on and the second switching unit to be off. The voltage detecting unit obtains a second voltage value across the detecting resistor when the processing unit controls the first switching unit to be off and the second switching unit to be on. The processing unit operates in a first mode and configured to calculate an insulation impedance value of a power converting device according to the first and the second voltage values.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: February 27, 2018
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Tsung-Han Tsai, Po-Jen Hou, Xin-Hung Lin
  • INSULATION DETECTING CIRCUIT, POWER CONVERTING DEVICE AND INSULATION IMPEDANCE VALUE DETECTING METHOD
    Publication number: 20180041122
    Abstract: An insulation detecting circuit includes a first switching unit, a second switching unit, a detecting resistor, a processing unit, and a voltage detecting unit. The second switching unit is electrically coupled to the first switching unit. The processing unit is configured to control the first and the second switching units. The voltage detecting unit obtains a first voltage value across the detecting resistor when the processing unit controls the first switching unit to be on and the second switching unit to be off. The voltage detecting unit obtains a second voltage value across the detecting resistor when the processing unit controls the first switching unit to be off and the second switching unit to be on. The processing unit operates in a first mode and configured to calculate an insulation impedance value of a power converting device according to the first and the second voltage values.
    Type: Application
    Filed: June 20, 2017
    Publication date: February 8, 2018
    Inventors: Tsung-Han TSAI, Po-Jen HOU, Xin-Hung LIN
  • POWER CONVERTING DEVICE AND GROUND IMPEDANCE VALUE DETECTING METHOD
    Publication number: 20180011149
    Abstract: A power converting device includes a DC-DC converting circuit, a DC-AC converting circuit, and an insulation detecting circuit. The DC-DC converting circuit is configured to convert a DC input voltage to a DC bus voltage. The DC-AC converting circuit is electrically coupled to the DC-DC converting circuit and configured to convert the DC bus voltage to an AC voltage. The insulation detecting circuit is electrically coupled between the DC-DC converting circuit and the DC-AC converting circuit. The insulation detecting circuit is configured to detect a ground impedance value of the power converting device according to the DC bus voltage.
    Type: Application
    Filed: March 27, 2017
    Publication date: January 11, 2018
    Inventors: Tsung-Han TSAI, Po-Jen HOU, Chen-Wei KU, Xin-Hung LIN