Patents by Inventor Hung-Liang Chou

Hung-Liang Chou 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: 20070252600
    Abstract: A diagnosis method for SOH of batteries includes the steps of: providing data of discharge voltages and currents of a battery unit; setting an acceptable value of a predetermined period of time and an acceptable range of variation rate of discharge current for the battery unit; calculating variation rates of discharge voltages and currents of the battery unit within the predetermined period of time by using the data of discharge voltages and currents; recording the data of discharge voltages and currents of the batteries and variation rates thereof; comparing the data of discharge voltages of the batteries and the variation rates thereof if the variation rates of discharge current are fallen within the acceptable range of current variation with selected reference data; and converting results of compared data of discharge voltages of the battery unit and the variation rates thereof into a SOH index.
    Type: Application
    Filed: January 22, 2007
    Publication date: November 1, 2007
    Applicant: ABLEREX ELECTRONICS CO., LTD.
    Inventors: Hung-Liang Chou, Yu-Hua Sun, Kuen-Der Wu, Chin-Chang Wu, Ming-Hsun Hsieh, Ya-Tsung Feng
  • Patent number: 7272026
    Abstract: A power converter for a hybrid power filter includes a power electronic switch set and a DC capacitor. The power converter permits a power line of a power system to directly connect or connect through the passive power filter to a positive or a negative terminal of the DC capacitor of the power converter for free control of the power electronic switches. Consequently, the power converter has a structural configuration that reduces the number of power electronic switches, which can reduce manufacturing costs.
    Type: Grant
    Filed: January 28, 2005
    Date of Patent: September 18, 2007
    Assignee: UIS Abler Electronics Co., Ltd.
    Inventors: Hung-Liang Chou, Chin-Chang Wu, Wen-Pin Hsu, Yao-Jen Chang
  • Publication number: 20070204966
    Abstract: An improved method of controlling build-up of adhesive coating on a Yankee drying cylinder preferably includes intermittently: (a) increasing the add-on rate of resinous adhesive to the drying cylinder substantially above the steady-state add-on rate; (b) segregating the absorbent sheet product produced while the add-on rate of resinous adhesive to the drying cylinder is elevated above the steady-state add-on rate from absorbent sheet product accumulated during steady-state operation; and (c) while the add-on rate of resinous adhesive to the drying cylinder is increased above the steady-state add-on rate, stripping at least a portion of the adhesive coating from the drying cylinder with a cleaning doctor.
    Type: Application
    Filed: February 26, 2007
    Publication date: September 6, 2007
    Applicant: GEORGIA-PACIFIC CONSUMER PRODUCTS LP
    Inventors: Hung Liang Chou, Kang Chang Yeh
  • Publication number: 20070103004
    Abstract: An islanding detection apparatus for a distributed generation power system and a detection method therefor operates a power converter to act as a virtual capacitor or inductor at a frequency close to but unequal to that of a utility power system under abnormal condition of the utility power system. When power failure occurs in the utility power system, only the distributed generation power system supplies power to a load so that a load voltage has been changed in at least one of amplitude and frequency which can be immediately detected islanding phenomenon.
    Type: Application
    Filed: October 12, 2006
    Publication date: May 10, 2007
    Applicant: UIS Abler Electronics Co., Ltd.
    Inventors: Hung-Liang Chou, Wen-Jung Chiang, Chin-Chang Wu, Ya-Tsung Feng
  • Publication number: 20070076451
    Abstract: An active power conditioner, connecting with a load and a power source in parallel, includes a DC power capacitor, a power converter, a high-frequency filter and a control circuit. The control circuit detects the voltage of the DC power capacitor and the current of the power source, thereby performing a closed loop control to stabilize the voltage of the DC power capacitor and performing a feed forward control to generate a driving signal for driving the power converter. The power converter actuates the DC power capacitor to supply a current via the high-frequency filter to reduce the reactive and harmonic components of load current. The load is converted to the linear resistance characteristic, observed from the power source side.
    Type: Application
    Filed: August 11, 2006
    Publication date: April 5, 2007
    Applicant: UIS Abler Electronics Co., Ltd.
    Inventors: Chin-Chang Wu, Hung-Liang Chou, Wen-Pin Hsu, Yu-Ting Kuo, Ya-Tsung Feng
  • Patent number: 7183751
    Abstract: A reactive power compensator device includes an AC capacitor and a small-capacity power converter serially connected thereto that avoid the problems of power resonance and harmonic current injection. The reactive power compensator device provides with compensation reactive power current with fixed amplitude or adjustable amplitude. The power converter permits one of power lines of a power system to be connected to either a positive or negative dc terminal of the power electronic switch set through no power electronic switch. Consequently, the number of the power electronic switches is reduced.
    Type: Grant
    Filed: January 28, 2005
    Date of Patent: February 27, 2007
    Assignee: UIS Abler Electronics Co., Ltd.
    Inventors: Chin-Chang Wu, Hung-Liang Chou, Wen-Pin Hsu, Yao-Jen Chang
  • Publication number: 20060244426
    Abstract: A harmonic-suppressing AC/DC power converter employs a control method for permitting the AC/DC power converter only to detect an input AC current and an output DC voltage. The control method can control the AC side of the AC/DC power converter to generate a voltage which is proportional to the input AC current. Thereby, the AC/DC power converter acts as a virtual resistor having a linear resistance characteristic. Accordingly, the input AC current of the AC/DC power converter can be controlled to approximate nearly as a sinusoidal wave with the performance of high input power factor and low input harmonic current.
    Type: Application
    Filed: January 17, 2006
    Publication date: November 2, 2006
    Applicant: UIS Abler Electronics Co., Ltd.
    Inventors: Chin-Chang Wu, Hung-Liang Chou, Min-Sheng Huang, Wen-Jet Hou
  • Patent number: 7091704
    Abstract: A three-phase three-wire active power filter includes a dc power capacitor, a power converter, a filter inductor set, a reactive power compensating capacitor set, a combined capacitor/resistor filtering set and a control circuit. The dc power capacitor provides with a regulated voltage. The power converter includes a two-arm bridge power converter, and has a pair of ac terminals and a pair of dc terminals. A phase of the three-phase three-wire active power filter, without control of the power electronic switch set, directly connects with any one of the dc terminals. Consequently, the number of power electronic switches employed in the two-arm bridge power converter of the three-phase three-wire active power filter can be reduced.
    Type: Grant
    Filed: June 16, 2005
    Date of Patent: August 15, 2006
    Assignee: UIS Abler Electronics Co., Ltd.
    Inventors: Hung-Liang Chou, Chin-Chang Wu, Wen-Pin Hsu, Ya-Tsung Feng, Yao-Jen Chang
  • Publication number: 20060044850
    Abstract: An active type harmonic suppression apparatus, connected in parallel to a power feeder, supplies a compensation current for injecting into the power feeder such that a utility current of a power source is approached to a sinusoidal wave. The control circuit retrieves a load current, a utility current, an output current of the power converter, a power source voltage and a voltage of the dc power capacitor for calculating and sending a reference signal of compensation voltage to a pulse-width-modulation circuit which generates switching signals for the power converter. Furthermore, the harmonic suppression apparatus can provide a fixed or variable reactive power.
    Type: Application
    Filed: July 11, 2005
    Publication date: March 2, 2006
    Applicant: UIS Abler Electronics Co., Ltd.
    Inventors: Chin-Chang Wu, Hung-Liang Chou, Ya-Tsung Feng, Wen-Pin Hsu, Yao-Jen Chang
  • Publication number: 20060033479
    Abstract: A three-phase three-wire active power filter includes a dc power capacitor, a power converter, a filter inductor set, a reactive power compensating capacitor set, a combined capacitor/resistor filtering set and a control circuit. The dc power capacitor provides with a regulated voltage. The power converter includes a two-arm bridge power converter, and has a pair of ac terminals and a pair of dc terminals. A phase of the three-phase three-wire active power filter, without control of the power electronic switch set, directly connects with any one of the dc terminals. Consequently, the number of power electronic switches employed in the two-arm bridge power converter of the three-phase three-wire active power filter can be reduced.
    Type: Application
    Filed: June 16, 2005
    Publication date: February 16, 2006
    Applicant: UIS Abler Electronics Co., Ltd.
    Inventors: Hung-Liang Chou, Chin-Chang Wu, Wen-Pin Hsu, Ya-Tsung Feng, Yao-Jen Chang
  • Patent number: 6960901
    Abstract: A bi-directional dc/dc power converter having a neutral terminal includes a first dc voltage terminal set and a second dc voltage terminal set. When the direction of power flow is from the first dc voltage terminal set to the second dc voltage terminal set, the Output voltage of power converter is the double of the input dc voltage. When the power flow direction is in reverse from the second dc voltage terminal set to the first dc voltage terminal set, the output voltage of power converter is half of the input dc voltage in this power flow direction.
    Type: Grant
    Filed: March 18, 2004
    Date of Patent: November 1, 2005
    Assignee: UIS Abler Electronics Co., Ltd.
    Inventors: Chin-Chang Wu, Hung-Liang Chou, Ya-Tsung Feng, Chi-Nan Hsieh, Yao-Jen Chang
  • Publication number: 20050212494
    Abstract: A reactive power compensator device includes an AC capacitor and a small-capacity power converter serially connected thereto that avoid the problems of power resonance and harmonic current injection. The reactive power compensator device provides with compensation reactive power current with fixed amplitude or adjustable amplitude. The power converter permits one of power lines of a power system to be connected to either a positive or negative dc terminal of the power electronic switch set through no power electronic switch. Consequently, the number of the power electronic switches is reduced.
    Type: Application
    Filed: January 28, 2005
    Publication date: September 29, 2005
    Applicant: UIS Abler Electronics Co., Ltd.
    Inventors: Chin-Chang Wu, Hung-Liang Chou, Wen-Pin Hsu, Yao-Jen Chang
  • Publication number: 20050207197
    Abstract: A power converter for a hybrid power filter includes a power electronic switch set and a DC capacitor. The power converter permits a power line of a power system to directly connect or connect through the passive power filter to a positive or a negative terminal of the DC capacitor of the power converter for free control of the power electronic switches. Consequently, the power converter has a lesser number of the power electronic switches that can reduce the manufacture cost.
    Type: Application
    Filed: January 28, 2005
    Publication date: September 22, 2005
    Applicant: UIS Abler Electronics Co., Ltd.
    Inventors: Hung-Liang Chou, Chin-Chang Wu, Wen-Pin Hsu, Yao-Jen Chang
  • Publication number: 20050110454
    Abstract: A solar electricity generating system includes a solar cell and a DC/AC converter coupled to the cell. The first proposed method includes the steps of: (a) adjusting an output current of the DC/AC converter; (b) sensing an output voltage variation of the solar cell; (c) adjusting the output current in a direction of the variation; and (d) repeating the steps (a) to (c). The second proposed method includes the steps of: (a) adjusting a DC output voltage of the solar cell; (b) sensing an output current amplitude variation of the DC/AC converter; (c) adjusting the output voltage in a direction of the variation; and (d) repeating the steps (a) to (c).
    Type: Application
    Filed: November 19, 2004
    Publication date: May 26, 2005
    Inventors: Wen-Yin Tsai, Hung-Liang Chou, Chin-Chang Wu, Kuen-Der Wu, Chun-Li Shu
  • Publication number: 20050088043
    Abstract: A backup power supply system supplies power from a first ac power source in normal condition. Once the first ac power source is abnormal or failed, the system automatically turns off the first ac power source and turns on a second ac power source with null transfer time. When the first ac power source is normal, a dc/ac power inverter is controlled to supply an approximately null current that a mechanical switch is allowed to being closed and no circulating current is generated between the first ac power source and the dc/ac power inverter. Since the mechanical switch is successively closed, and it requires no switching operation, the backup power supply system can supply the backup power with a null transfer time.
    Type: Application
    Filed: June 29, 2004
    Publication date: April 28, 2005
    Applicant: UIS Abler Electronics Co., Ltd.
    Inventors: Ya-Tsung Feng, Chin-Chang Wu, Hung-Liang Chou, Nan-Ying Shen, Kuo-Fang Huang, Yao-Jen Chang
  • Publication number: 20040222776
    Abstract: A bi-directional dc/dc power converter having a neutral terminal includes a first dc voltage terminal set and a second dc voltage terminal set. When the direction of power flow is from the first dc voltage terminal set to the second dc voltage terminal set, the Output voltage of power converter is the double of the input dc voltage. When the power flow direction is in reverse from the second dc voltage terminal set to the first dc voltage terminal set, the output voltage of power converter is half of the input dc voltage in this power flow direction.
    Type: Application
    Filed: March 18, 2004
    Publication date: November 11, 2004
    Applicant: UIS Abler Electronics Co., Ltd.
    Inventors: Chin-Chang Wu, Hung-Liang Chou, Ya-Tsung Feng, Chi-Nan Hsieh, Yao-Jen Chang
  • Publication number: 20040209058
    Abstract: The present invention is a paper product including a thermally bondable fiber which may be surfactant coated. The paper product according to the present invention has improved strength and absorbency characteristics. The paper product of the present invention may be embossed and heat cured to result in an attractive and absorbent product.
    Type: Application
    Filed: October 2, 2003
    Publication date: October 21, 2004
    Inventors: Hung Liang Chou, H. Charles Thomas, Daniel W. Sumnicht
  • Patent number: 6665198
    Abstract: An power supply apparatus for the input harmonic current suppression, input power factor compensation, and an output voltage regulation and a method thereof is provided. The power supply apparatus electrically connected to a AC power has a first power converter electrically connected in parallel with the AC power for providing a first compensating voltage and controlling the first compensating voltage to reduce harmonic components of an input current so as to cause the input current as a substantial sinusoidal wave and in phase with the input voltage, and a second power converter electrically connected in series with an output end of the power supply apparatus for providing a second compensating voltage in order to maintain the output voltage at a desired level and waveform. The related methods are also discussed.
    Type: Grant
    Filed: July 30, 2002
    Date of Patent: December 16, 2003
    Assignee: Delta Electronics, Inc.
    Inventors: Wen-Yin Tasi, Hung-Liang Chou, Chin-Chang Wu
  • Publication number: 20030042877
    Abstract: An power supply apparatus for the input harmonic current suppression, input power factor compensation, and an output voltage regulation and a method thereof is provided. The power supply apparatus electrically connected to a AC power has a first power converter electrically connected in parallel with the AC power for providing a first compensating voltage and controlling the first compensating voltage to reduce harmonic components of an input current so as to cause the input current as a substantial sinusoidal wave and in phase with the input voltage, and a second power converter electrically connected in series with an output end of the power supply apparatus for providing a second compensating voltage in order to maintain the output voltage at a desired level and waveform. The related methods are also discussed.
    Type: Application
    Filed: July 30, 2002
    Publication date: March 6, 2003
    Applicant: Delta Electronics, Inc.
    Inventors: Wen-Yin Tasi, Hung-Liang Chou, Chin-Chang Wu