Patents by Inventor Kun-Feng Chen

Kun-Feng Chen 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: 10516342
    Abstract: A three arm rectifier and inverter circuit is provided. The three arm rectifier and inverter circuit includes an input end, a rectifier circuit and an inverter circuit. The input end is utilized for inputting an input voltage and an input current. The rectifier circuit includes a low frequency switching arm. The low frequency switching arm is coupled to the input end for receiving the input voltage and the input current and generating a trigger signal. The inverter circuit includes a full bridge switch. The full bridge switch is coupled to the low frequency switching arm for receiving the trigger signal and adjusting an output voltage.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: December 24, 2019
    Assignee: National Chung-Shan Institute of Science and Technology
    Inventors: Kun-Feng Chen, Jun-Hao Chen, Hsu-Pin Yang
  • Patent number: 10476376
    Abstract: A high power factor converter is provided. The high power factor converter includes a rectifier, a reactive power control circuit and a converter circuit. The rectifier is utilized for receiving and converting an input AC voltage in to an input DC voltage. The reactive power control circuit is coupled to the rectifier for performing a reactive power control operation based on the input DC voltage. The converter circuit is coupled to the reactive power control circuit for converting the input DC voltage into an output voltage.
    Type: Grant
    Filed: December 17, 2018
    Date of Patent: November 12, 2019
    Assignee: National Chung-Shan Institute of Science and Technology
    Inventors: Kun-Feng Chen, Jung-Yang Wang, Chin-Yu Ho
  • Patent number: 10126486
    Abstract: A lamp is provided. The lamp includes a frame body, a light guide plate and plural light sources. The frame body has an accommodating space. The frame body includes at least one integrating member and plural side covers, and the integrating member includes a conductive assembly. The light guide plate is disposed in the accommodating space. The light sources are respectively disposed in the side covers and disposed adjacent to side edges of the light guide plate. The conductive assembly is disposed on one side of the integrating member near the light guide plate, and the conductive assembly is connected to the light sources to form an electrical loop.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: November 13, 2018
    Assignees: RADIANT OPTO-ELECTRONICS (SUZHOU) CO., LTD., RADIANT OPTO-ELECTRONICS CORPORATION
    Inventors: Chih-Hung Ju, Guo-Hao Huang, Kun-Feng Chen
  • Patent number: 10067286
    Abstract: A lamp device includes a heat dissipating seat, a light emitting unit, a mounting seat and a light guide plate. The heat dissipating seat defines an accommodation space with an opening. The light emitting unit is fixed to the heat dissipating seat within the accommodation space. The mounting seat is disposed in the accommodation space through the opening, and covers the light emitting unit. A receiving space is defined by at least a portion of the mounting seat and extends in a direction away from the light emitting unit. The light guide plate has at least a portion inserted into and fixed within the receiving space.
    Type: Grant
    Filed: October 6, 2015
    Date of Patent: September 4, 2018
    Assignee: RADIANT OPTO-ELECTRONICS CORPORATION
    Inventors: Chih-Hung Ju, Guo-Hao Huang, Kun-Feng Chen
  • 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
  • Patent number: 10038393
    Abstract: The present invention discloses a single-phase non-isolated inverter, comprising: a first DC-side capacitor, a second DC-side capacitor, a first switch unit, a second switch unit, a third switch unit, a fourth switch unit, a fifth switch unit, a sixth switch unit, a seventh switch unit, and an eighth switch unit. When the single-phase non-isolated inverter is operated at a zero-voltage switching state, the seventh switch unit and the eighth switch unit are switched to short circuit for forming a short-circuit path between the bus lines. Briefly speaking, this novel single-phase non-isolated inverter has reactive power capability. In addition, according to an adjusting signal of a PI controller, micro controller of the single-phase non-isolated inverter is able to properly adjusts the duty cycle of a switch unit driving signal of the fifth switch unit and the sixth switch unit, so as to cancel the capacitor voltage unbalance between two DC-side capacitors.
    Type: Grant
    Filed: November 2, 2017
    Date of Patent: July 31, 2018
    Assignee: National Chung-Shan Institute of Science & Technology
    Inventors: Kun-Feng Chen, Woei-Luen Chen, Yi-Lun Chen, Jung-Yang Wang
  • Publication number: 20180106953
    Abstract: A light-emitting device is provided, and includes a light guide plate and a light source. The light guide plate includes a main body, in which the main body has a light-incident surface. The light source is disposed adjacent to the light-incident surface. The light-emitting device is selectively disposed in different arrangements. When the light-emitting device is disposed in a first arrangement, the light-emitting device is able to provide a first light-emitting function towards a first direction and to provide a second light-emitting function towards a second direction. When the light-emitting device is disposed in a second arrangement, the second light-emitting function towards the second direction is changed, and the first light-emitting function towards the first direction is also changed.
    Type: Application
    Filed: September 18, 2017
    Publication date: April 19, 2018
    Inventors: Guo-Hao HUANG, Kun-Feng CHEN, Ko-Yu HSIAO
  • Publication number: 20180039014
    Abstract: A lamp is provided. The lamp includes a frame body, a light guide plate and plural light sources. The frame body has an accommodating space. The frame body includes at least one integrating member and plural side covers, and the integrating member includes a conductive assembly. The light guide plate is disposed in the accommodating space. The light sources are respectively disposed in the side covers and disposed adjacent to side edges of the light guide plate. The conductive assembly is disposed on one side of the integrating member near the light guide plate, and the conductive assembly is connected to the light sources to form an electrical loop.
    Type: Application
    Filed: December 30, 2015
    Publication date: February 8, 2018
    Inventors: Chih-Hung Ju, Guo-Hao Huang, Kun-Feng Chen
  • 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: 9845818
    Abstract: A coupling device includes a plurality of frames, each of which includes a base wall, and two spaced-apart side walls that cooperate with the base wall to define an accommodation space. The frames are arranged such that the accommodation spaces of the frames communicate with each other. At least one coupling unit is disposed in the accommodation spaces of two adjacent ones of the frames and applies a force to the side walls of the two adjacent ones of the frames so as to couple together the two adjacent ones of the frames.
    Type: Grant
    Filed: December 14, 2015
    Date of Patent: December 19, 2017
    Assignee: RADIANT OPTO-ELECTRONICS CORPORATION
    Inventors: Shang-Chia Liu, Guo-Hao Huang, Kun-Feng Chen
  • Patent number: 9719659
    Abstract: A lamp includes a base, a light emitting module mounted to the base, a lens member and a decorating unit. The lens member has a light input surface, a light output surface disposed in front of and spaced apart from the light input surface along an axis, and a through hole extending through the light input surface and the light output surface. Light emitted from the light emitting module enters the lens member through the light input surface and exits the lens member through the light output surface. The decorating unit is detachable and is optically disposed for decorating the lamp or for changing at least one of a wavelength, an output angle, a light field and so forth of the light passing through the lens member.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: August 1, 2017
    Assignee: RADIANT OPTO-ELECTRONICS CORPORATION
    Inventors: Chih-Hung Ju, Guo-Hao Huang, Kun-Feng Chen, Pen-Jan Wang
  • Patent number: 9709240
    Abstract: A lamp includes a frame, a light source, a light guide unit and a decorative unit. The light source is disposed on the frame. The light guide unit has a light-incident surface and a light-emitting surface. The light-incident surface faces towards the light source, and light emitted from the light source enters the light guide unit from the light-incident surface and is emitted out from the light-emitting surface to form a light plane. The decorative unit is detachably disposed on a position different from the light plane.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: July 18, 2017
    Assignee: Radiant Opto-Electronics Corporation
    Inventors: Guo-Hao Huang, Kun-Feng Chen, Pen-Jan Wang
  • 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
  • Patent number: 9576086
    Abstract: A motor simulator without requiring a motor is a testing motor controller used for inputting a driving signal according to a power supply driving signal, feeding back a status response of a dynamic calculator of the motor simulator, outputting a voltage and current reference command value required by the motor simulator to the motor simulator, so that the dynamic calculator and the electric power converter installed in the motor simulator generate a voltage and a current of an actual motor in an operating status. Therefore, the testing motor controller keeps converting and adjusting the electric energy for driving an operation of the motor simulator according to a status response fed back by the dynamic calculator of the motor simulator, so as to achieve a control function of the testing motor controller for testing the rotation speed and positioning of the motor.
    Type: Grant
    Filed: March 4, 2014
    Date of Patent: February 21, 2017
    Assignee: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Hsuang-Chang Chiang, Chao-Tsung Ma, Kun-Feng Chen, Yu-Min Liao
  • Patent number: 9397549
    Abstract: A power conversion system for controlling harmonics, which uses the Fourier transform analysis to calculate the harmonics element of each current, and adds the harmonics compensation strategy into the control strategy of the DC-AC power converter so as to decrease the harmonics element generated from the actual current.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: July 19, 2016
    Assignee: NATIONAL CHUNG SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Kun-Feng Chen, Kuo-Kuang Jen, Jong-Chin Hwang, Po-Cheng Chen
  • Publication number: 20160177990
    Abstract: A coupling device includes a plurality of frames, each of which includes a base wall, and two spaced-apart side walls that cooperate with the base wall to define an accommodation space. The frames are arranged such that the accommodation spaces of the frames communicate with each other. At least one coupling unit is disposed in the accommodation spaces of two adjacent ones of the frames and applies a force to the side walls of the two adjacent ones of the frames so as to couple together the two adjacent ones of the frames.
    Type: Application
    Filed: December 14, 2015
    Publication date: June 23, 2016
    Applicant: Radiant Opto-Electronics Corporation
    Inventors: Shang-Chia LIU, Guo-Hao HUANG, Kun-Feng CHEN
  • Patent number: D770672
    Type: Grant
    Filed: June 18, 2015
    Date of Patent: November 1, 2016
    Assignee: Radiant Opto-Electronics Corporation
    Inventors: Chih-Hung Ju, Kun-Feng Chen
  • Patent number: D871661
    Type: Grant
    Filed: October 20, 2016
    Date of Patent: December 31, 2019
    Assignee: RADIANT OPTO-ELECTRONICS CORPORATION
    Inventors: Pai-Ho Hsu, Guo-Hao Huang, Kun-Feng Chen