Patents by Inventor Hsuang-Chang Chiang

Hsuang-Chang Chiang 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).

  • Patent number: 10833511
    Abstract: A battery cell management and balance circuit comprises multiple battery cell balance circuits, multiple battery cell monitor units, multiple battery module balance circuits and a battery management unit. The battery cell balance circuits connect to battery cells for executing a first charge or discharge command. The battery cell monitor units monitor battery cells for generating battery cell information and the first charge or discharge commands. The battery module balance circuits connect to battery modules for executing second charge or discharge commands. The battery management unit connect to the battery cell monitor units for receiving battery cell information and the battery module balance circuits for direct or indirectly generating the second charge or discharge commands to the battery module balance circuits. A battery system and a battery cell management and balance circuit method is also introduced.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: November 10, 2020
    Assignee: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Chi-Sheng Wu, Gwo-Huei You, Hsuang-Chang Chiang, Tsang-Li Tai
  • Patent number: 10807487
    Abstract: A battery management and balance circuit comprises multiple battery group balance circuits, multiple battery module balance circuits and a battery management unit. The battery group balance circuits connect to battery groups for executing first charge or discharge command. The battery management unit connect to the battery group balance circuits and the battery module balance circuits for generating the first and second charge or discharge commands to the battery module balance circuits. A battery system and a battery management and balance circuit method is also introduced.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: October 20, 2020
    Assignee: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Chi-Sheng Wu, Chih-Hsien Chung, Hsuang-Chang Chiang, Tsang-Li Tai
  • Publication number: 20190176636
    Abstract: A battery management and balance circuit comprises multiple battery group balance circuits, multiple battery module balance circuits and a battery management unit. The battery group balance circuits connect to battery groups for executing first charge or discharge command. The battery management unit connect to the battery group balance circuits and the battery module balance circuits for generating the first and second charge or discharge commands to the battery module balance circuits. A battery system and a battery management and balance circuit method is also introduced.
    Type: Application
    Filed: December 11, 2017
    Publication date: June 13, 2019
    Inventors: CHI-SHENG WU, CHIH-HSIEN CHUNG, HSUANG-CHANG CHIANG, TSANG-LI TAI
  • Publication number: 20190181653
    Abstract: A battery cell management and balance circuit comprises multiple battery cell balance circuits, multiple battery cell monitor units, multiple battery module balance circuits and a battery management unit. The battery cell balance circuits connect to battery cells for executing a first charge or discharge command. The battery cell monitor units monitor battery cells for generating battery cell information and the first charge or discharge commands. The battery module balance circuits connect to battery modules for executing second charge or discharge commands. The battery management unit connect to the battery cell monitor units for receiving battery cell information and the battery module balance circuits for direct or indirectly generating the second charge or discharge commands to the battery module balance circuits. A battery system and a battery cell management and balance circuit method is also introduced.
    Type: Application
    Filed: December 7, 2017
    Publication date: June 13, 2019
    Inventors: CHI-SHENG WU, GWO-HUEI YOU, HSUANG-CHANG CHIANG, TSANG-LI TAI
  • Patent number: 10170985
    Abstract: An apparatus for current estimation of a DC/DC converter includes a current sensing unit, a signal sampling unit, and a current estimator. The current sensing unit is for sensing a current passing through a switch of the DC/DC converter and converting the current into a voltage signal. The signal sampling unit, coupled to the current sensing unit, is for sampling the voltage signal so as to output a sampled signal. The current estimator, coupled to the signal sampling unit, is for determining a signal indicating estimated magnitude of an inductor current of the DC/DC converter, based on the sampled signal, a scale factor of the current sensing unit, a duty ratio of a driving signal for controlling the switch, an input voltage and an output voltage of the DC/DC converter. An apparatus for current estimation that can further control an averaged current of a DC/DC converter.
    Type: Grant
    Filed: December 6, 2017
    Date of Patent: January 1, 2019
    Assignee: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Chi-Sheng Wu, Kuo-Kuang Jen, Hsuang-Chang Chiang, Tsang-Li Tai
  • Patent number: 10063242
    Abstract: A phase-locked loop method for use in utility electricity parallel-connection system is introduced. The phase-locked loop method comprises a conversion signal generating step, an error calculating step, a frequency correction signal obtaining step, an angle signal obtaining step, and a synchronous signal generating step to not only calculate an error value by detecting a utility electricity voltage, but also reduce or return-to-zero the error value by proportional integral adjustment. With the steps, the phase-locked loop method achieves synchrony precisely by eliminating input utility electricity voltage distortion and frequency variation. Furthermore, the phase-locked loop method advantageously features quick response and a wide frequency range and therefore is effective in tracking power generation facilities, such as a diesel generator, and expanding inverters.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: August 28, 2018
    Assignee: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Chi-Sheng Wu, Kuo-Kuang Jen, Hsuang-Chang Chiang, Tsang-Li Tai
  • Patent number: 10063089
    Abstract: The present invention provides a novel wind power charging circuit with three-phase, single-stage and bridgeless framework. This novel wind power charging circuit is developed based on an isolated single-ended primary-inductance converter (SEPIC) having buck-boost converting function, and can be applied in a wind turbine system for increasing the operation scope of the input voltage provided by a wind turbine of the wind turbine system, so as to facilitate the wind turbine system include wide-range operation scope under different wind speeds, such that the electric energy production and the electromechanical conversion efficiency of the wind turbine system are able to be effectively enhanced. In addition, because this novel wind power charging circuit does not include any bridgeless PFC circuits and bridge-type diode rectifiers, the low conducting loss as well as the whole circuit volume and assembly cost of the wind turbine system can be simultaneously reduced.
    Type: Grant
    Filed: December 11, 2015
    Date of Patent: August 28, 2018
    Assignee: National Chung-Shan Institute of Science & Technology
    Inventors: Hsuang-Chang Chiang, Kun-Feng Chen, Chin-Yu Ho, Hsu-Pin Yang
  • Publication number: 20180166977
    Abstract: A single-phase bridgeless insulated power factor adjustment circuit includes an EMI filter module, low-frequency switching diode module, two switches and two insulated voltage transformation modules. The EMI filter module is coupled to an AC power. The low-frequency switching diode module is coupled to the EMI filter module. The two switches are coupled to the low-frequency switching diode module. The two insulated voltage transformation modules are coupled to one of the two switches. With the low-frequency switching diode module being in first ON state, one of the two switches turns on, and one of the two insulated voltage transformation modules turns on. With the low-frequency switching diode module being in second ON state, the other switch turns on, and the other insulated voltage transformation module turns on. Hence, the circuit is unlikely to fail, but features simple circuitry, incurs low costs, be compact, and achieves high conversion efficiency.
    Type: Application
    Filed: December 12, 2016
    Publication date: June 14, 2018
    Inventors: CHI-SHENG WU, GWO-HUEI YOU, HSUANG-CHANG CHIANG, TSANG-LI TAI
  • Publication number: 20180167074
    Abstract: A phase-locked loop method for use in utility electricity parallel-connection system is introduced. The phase-locked loop method comprises a conversion signal generating step, an error calculating step, a frequency correction signal obtaining step, an angle signal obtaining step, and a synchronous signal generating step to not only calculate an error value by detecting a utility electricity voltage, but also reduce or return-to-zero the error value by proportional integral adjustment. With the steps, the phase-locked loop method achieves synchrony precisely by eliminating input utility electricity voltage distortion and frequency variation. Furthermore, the phase-locked loop method advantageously features quick response and a wide frequency range and therefore is effective in tracking power generation facilities, such as a diesel generator, and expanding inverters.
    Type: Application
    Filed: December 8, 2016
    Publication date: June 14, 2018
    Inventors: CHI-SHENG WU, KUO-KUANG JEN, HSUANG-CHANG CHIANG, TSANG-LI TAI
  • Patent number: 9997993
    Abstract: A single-phase bridgeless insulated power factor adjustment circuit includes an EMI filter module, low-frequency switching diode module, two switches and two insulated voltage transformation modules. The EMI filter module is coupled to an AC power. The low-frequency switching diode module is coupled to the EMI filter module. The two switches are coupled to the low-frequency switching diode module. The two insulated voltage transformation modules are coupled to one of the two switches. With the low-frequency switching diode module being in first ON state, one of the two switches turns on, and one of the two insulated voltage transformation modules turns on. With the low-frequency switching diode module being in second ON state, the other switch turns on, and the other insulated voltage transformation module turns on. Hence, the circuit is unlikely to fail, but features simple circuitry, incurs low costs, be compact, and achieves high conversion efficiency.
    Type: Grant
    Filed: December 12, 2016
    Date of Patent: June 12, 2018
    Assignee: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Chi-Sheng Wu, Gwo-Huei You, Hsuang-Chang Chiang, Tsang-Li Tai
  • Publication number: 20180041120
    Abstract: According to one aspect, embodiments herein provide a DC-DC converter system comprising a plurality of switches configured to receive input DC power having a DC voltage level from a DC voltage source, a first capacitor coupled to the plurality of switches, a second capacitor coupled to the plurality of switches, and a controller configured to operate the plurality of switches such that in a first mode, voltage across the first capacitor is at a level equal to substantially half of the DC voltage level of the input DC power, in a second mode, voltage across the second capacitor is at a level equal to substantially half of the DC voltage level of the input DC power, and an output voltage level of DC power at an output is stepped down, by a voltage step down ratio, in relation to the DC voltage level of the input DC power.
    Type: Application
    Filed: August 3, 2016
    Publication date: February 8, 2018
    Inventors: Hui-Jung Chen, Hsuang-Chang Chiang
  • Patent number: 9847727
    Abstract: A half-bridge resonant bidirectional DC-DC converter circuit comprising a half-bridge buck-boost converter and a resonant DC-DC converter. The half-bridge buck-boost converter is coupled to an external DC power source to achieve a wide input voltage range. The resonant DC-DC converter is coupled to the half-bridge buck-boost converter to act as a later stage circuit of the half-bridge buck-boost converter. The resonant DC-DC converter is used to control the direction of the bidirectional power flow and respond to the half-bridge buck-boost converter under a fixed frequency mode to convert the input of the half-bridge buck-boost converter to an induced current.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: December 19, 2017
    Assignee: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Kun-Feng Chen, Hsuang-Chang Chiang, Rong-Yang Wang, Chin-Yu Ho
  • Patent number: 9774263
    Abstract: According to one aspect, embodiments herein provide an AC-DC converter comprising a rectifier, a capacitor, a DC bus coupled to the capacitor, a plurality of first switches coupled to the DC bus, a plurality of second switches coupled between the rectifier and the first switches, a transformer having a primary winding and a secondary winding, the primary winding coupled to the plurality of first switches, the plurality of second switches, and the rectifier, and the secondary winding coupled to an output, and a controller configured, in response to a determination that the input AC power is acceptable, to operate the plurality of second switches and the plurality of first switches such that output DC voltage is maintained at a desired output DC voltage level, and operate the plurality of first switches such that a DC bus voltage on the DC bus is maintained at a desired DC bus voltage level.
    Type: Grant
    Filed: August 5, 2016
    Date of Patent: September 26, 2017
    Assignee: SCHNEIDER ELECTRIC IT CORPORATION
    Inventors: Hui-Jung Chen, Damir Klikic, Kuo-Liang Lee, Hsuang-Chang Chiang
  • Patent number: 9735670
    Abstract: A power factor correction conversion device and control method thereof are adapted to send an AC signal to a power factor correction conversion device, convert the AC signal into a DC signal, and perform power factor correction of the DC signal, so as to change a power factor sent to a back-end load, wherein the control method includes a rectification step, a feedback step, a ripple calculating step, a ripple offsetting step, a logical computation step, a pulse width modulation step and a power factor correcting step. Hence, the second-order ripple component in a feedback signal is eliminated to thereby increase the response speed of the power factor correction conversion device and reduce the distortion rate of the current, thus increasing the power factor sent to the back-end load.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: August 15, 2017
    Assignee: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Chi-Sheng Wu, Gwo-Huei You, Hsuang-Chang Chiang, Tsang-Li Tai
  • Patent number: 9685760
    Abstract: The present invention provides a programmable continuous wave high power laser diode system, which comprised digital control unit, a switch module unit, and a latch current controlling unit so as to provide user to set the latch current of the high power laser diode via the digital control unit controlling the switch module unit and the latch current controlling unit, therefore, the laser diode system includes advantages of high system efficiency, reliability, low output ripple current range and fast switching reaction time.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: June 20, 2017
    Assignee: National Chung-Shan Institute of Science & Technology
    Inventors: Chao-Tsung Ma, Hsuang-Chang Chiang, Kun-Feng Chen, Yi-Lun Chen
  • Publication number: 20170170739
    Abstract: The present invention provides a solar power converter with isolated bipolar full-bridge resonant circuit. This solar power converter system of the present invention have isolated two-stage full-bridge resonant circuit having a full-bridge resonant converter unit for solar power converter among fixed by uncontrolled phase shift controlled full bridge resonant converter unit, so as to all power switches of the full bridge resonant converter unit in any load can reach zero voltage switching, not only can improve light-load efficiency, the scope for efficiency under full load variation of both improvement and helpful.
    Type: Application
    Filed: December 11, 2015
    Publication date: June 15, 2017
    Inventors: Hsuang-Chang Chiang, Kun-Feng Chen, Ke-Chih Liu, Chin-Chieh Chang
  • Publication number: 20170170681
    Abstract: The present invention provides a novel wind power charging circuit with three-phase, single-stage and bridgeless framework. This novel wind power charging circuit is developed based on an isolated single-ended primary-inductance converter (SEPIC) having buck-boost converting function, and can be applied in a wind turbine system for increasing the operation scope of the input voltage provided by a wind turbine of the wind turbine system, so as to facilitate the wind turbine system include wide-range operation scope under different wind speeds, such that the electric energy production and the electromechanical conversion efficiency of the wind turbine system are able to be effectively enhanced. In addition, because this novel wind power charging circuit does not include any bridgeless PFC circuits and bridge-type diode rectifiers, the low conducting loss as well as the whole circuit volume and assembly cost of the wind turbine system can be simultaneously reduced.
    Type: Application
    Filed: December 11, 2015
    Publication date: June 15, 2017
    Inventors: Hsuang-Chang Chiang, Kun-Feng Chen, Chin-Yu Ho, Hsu-Pin Yang
  • Publication number: 20170170745
    Abstract: A power factor correction conversion device and control method thereof are adapted to send an AC signal to a power factor correction conversion device, convert the AC signal into a DC signal, and perform power factor correction of the DC signal, so as to change a power factor sent to a back-end load, wherein the control method includes a rectification step, a feedback step, a ripple calculating step, a ripple offsetting step, a logical computation step, a pulse width modulation step and a power factor correcting step. Hence, the second-order ripple component in a feedback signal is eliminated to thereby increase the response speed of the power factor correction conversion device and reduce the distortion rate of the current, thus increasing the power factor sent to the back-end load.
    Type: Application
    Filed: December 15, 2015
    Publication date: June 15, 2017
    Inventors: CHI-SHENG WU, GWO-HUEI YOU, HSUANG-CHANG CHIANG, TSANG-LI TAI
  • Patent number: 9660515
    Abstract: A control method for reducing second-order ripple is adapted to reduce second-order ripple on an input side of a DC-DC conversion device, wherein the input side of the DC-DC conversion device is coupled to a preceding voltage supply device, and an output side of the DC-DC conversion device is coupled to a DC-AC transforming device, characterized in that a voltage control device for controlling the preceding voltage supply device is designed according to a transfer function, and the transfer function is adjusted and controlled with an output voltage of the DC-DC conversion device and an amplitude voltage of pulse width modulation to reduce second-order ripple of an input voltage input to the input side of the DC-DC conversion device, thereby dispensing the need to increase circuits or increase capacitance of components and cutting costs.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: May 23, 2017
    Assignee: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Chi-Sheng Wu, Chih-Hsien Chung, Hsuang-Chang Chiang, Tsang-Li Tai
  • Patent number: 9627961
    Abstract: A mixed power supply device includes a power supply component for providing a DC voltage; a DC-DC conversion module coupled to the power supply component to receive the DC voltage and output a stable DC voltage; a current transformation module coupled between the DC-DC conversion module and a load to receive the stable DC voltage and convert the stable DC voltage into an AC voltage; and a merging network switching switch coupled to the current transformation module to connect the current transformation module and a utility power network in parallel or disconnect the current transformation module from the utility power network, allowing a load to receive merging network mode-based power supply or standalone mode-based power supply, wherein, in the merging network mode, the current transformation module performs unbalanced current compensation on load unbalance of the load.
    Type: Grant
    Filed: December 11, 2015
    Date of Patent: April 18, 2017
    Assignee: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Chi-Sheng Wu, Kuo-Kuang Jen, Hsuang-Chang Chiang, Tsang-Li Tai