Patents by Inventor JIAN PING

JIAN PING 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: 20150364909
    Abstract: A short-circuit detecting device includes a coil and a processing circuit. The coil is configured to detect a variation of magnetic flux intensity generated by a current variation of a current flowing through a power semiconductor switch and to generate an induced electromotive force based on the variation of magnetic flux intensity. When the current variation rate of said current is greater than a predetermined value, the processing circuit is configured to generate a short-circuit signal based on the induced electromotive force so as to turn off the power semiconductor switch based on the short-circuit signal.
    Type: Application
    Filed: April 16, 2015
    Publication date: December 17, 2015
    Inventors: Ming WANG, Jian-Ping YING, Jian-Gang HUANG, Li-Feng QIAO, Tao JIANG
  • Publication number: 20150362528
    Abstract: A voltage sampling system is provided. The voltage sampling system includes a voltage sampling device, two optic-fiber transmission lines and a control device. The voltage sampling device includes a voltage-dividing resistor module, a common mode rejection circuit and an analog-to-digital converter. The voltage-dividing resistor module generates a first and a second divided voltages according to a voltage source. The common mode rejection circuit receives the first and the second divided voltages to perform a common-mode noise rejecting process to generate an output voltage. The analog-to-digital converter converts the output voltage to generate a digital data signal. The two optic-fiber transmission lines transmit the digital data signal and a clock signal respectively. The control device receives the digital data signal from the analog-to-digital converter and the clock signal to perform a digital data processing.
    Type: Application
    Filed: April 23, 2015
    Publication date: December 17, 2015
    Inventors: Bo-Yu PU, Yi ZHANG, Ming WANG, Hong-Jian GAN, Jian-Ping YING
  • Publication number: 20150352210
    Abstract: Particle functionalization systems including one or more of: a target of a material; an energetic ion and/or electron source providing accelerated ions and electrons to the target; a potential that is applied to at least the target and that causes ions and/or electrons from the ionized gas to impact a surface of the target and release atoms of the material; at least one magnet providing a magnetic field that controls movement of the ions and electrons and nucleation, formation and growth of particles from the released atoms; and a particle collection device that collects particles, the collection device comprising a substrate and a polymeric functionalization coating disposed on the substrate, wherein particles impinge upon and form bonds with molecules of the functionalization coating. Methods of preparing functionalized particles, functionalized particle compositions, and kits including functionalized particles are also described.
    Type: Application
    Filed: August 14, 2015
    Publication date: December 10, 2015
    Inventors: Jian-Ping Wang, Claire Hovland, Timothy Bloomquist, Jing Ying
  • Publication number: 20150355143
    Abstract: A device includes a sensor surface and a pair of electrodes. The sensor surface includes a first conductive layer separated from a second conductive layer by an intermediary layer, a magnetization direction of the first conductive layer and a magnetization direction of the second conductive layer having a ground state orientation of approximately 0 degrees. An electrical resistance between the pair of electrodes is determined by a magnetic field proximate the sensor surface.
    Type: Application
    Filed: August 14, 2015
    Publication date: December 10, 2015
    Inventors: Jian-Ping Wang, Chengguo Xing, Yuanpeng Li, Balasubramanian Srinivasan
  • Publication number: 20150349681
    Abstract: A variable frequency speed control system having a low voltage ride through function that includes a variable frequency drive having a rectifier, a DC bus and an inverter is provided. The variable frequency speed control system includes a voltage drop detecting module, a frequency control module, an operation mode selecting module and an inverter control module. The voltage drop detecting module generates a voltage drop coefficient according to a grid voltage and a rated grid voltage and generates an operation mode switching signal. The operation mode selecting module receives a target frequency signal and a frequency decreasing amount and generates an output frequency signal according to the operation mode switching signal. The inverter control module generates a three phase modulating signal according to the output frequency signal, which is used to control the operation of the inverter.
    Type: Application
    Filed: May 12, 2015
    Publication date: December 3, 2015
    Inventors: Bin LIU, Zheng WANG, Yi ZHANG, Hong-Jian GAN, Jian-Ping YING
  • Publication number: 20150349654
    Abstract: The present disclosure provides a voltage-adjusting device applied in a power conversion system including a Vienna rectifier, a direct current (DC) bus, and an inverter. The voltage-adjusting device includes a grid voltage sampling module for sampling a grid voltage, a given bus voltage calculation module, a voltage-adjusting module, a current control module and a pulse width modulation module. The given bus voltage calculation module calculates a given value of the DC bus voltage based on the grid voltage. The current control module receives a three phase AC current from the grid, the active current given signal and the reactive current given signal to output a three phase control voltage. The pulse width modulation module outputs a pulse control signal to the Vienna rectifier.
    Type: Application
    Filed: May 12, 2015
    Publication date: December 3, 2015
    Inventors: Zheng WANG, Yi ZHANG, Hong-Jian GAN, Jian-Ping YING
  • Publication number: 20150346276
    Abstract: A converter circuit is provided. The converter circuit includes a capacitor module, bridge arms, a voltage measuring module and an open-circuit detection module. Each bridge arm is connected to the capacitor module in parallel and includes an upper arm and a lower bridge arm connected at a middle point. The voltage measuring module measures voltage differences between each two bridge arms. The open-circuit detection module transmits test impulse signals to the bridge arms to activate at least one upper-conducted bridge arm and at least one lower-conducted bridge arm. The open-circuit detection module retrieves the voltage differences of each pair of the upper-conducted and lower-conducted bridge arms to make comparison with a reference value to determine an operation state thereof, and makes comparison of the operation state determined according to the different groups of test impulse signals to determine whether the upper and the lower bridge arms are actually open circuit.
    Type: Application
    Filed: April 9, 2015
    Publication date: December 3, 2015
    Inventors: Liang LIU, Bo-Yu PU, Yi ZHANG, Hong-Jian GAN, Jian-Ping YING
  • Publication number: 20150349521
    Abstract: A method for detecting a short circuit fault in a multi-level inverter circuit is provided. The multi-level inverter circuit includes a plurality of single phase branches each including of switches. The method includes steps outlined below. At least one detecting pulse sequence is transmitted to the switches of each of the single phase branches. Whether a conducting path is formed in any of the single phase branches is determined according to the detecting pulse sequence. When the conducting loop is formed, respective position of one or more malfunctioned switch in the single phase branches is located according to a path of the conducting loop. A short-circuit detection device and a three-phase three-level inverter circuit are also disclosed herein.
    Type: Application
    Filed: May 13, 2015
    Publication date: December 3, 2015
    Inventors: Liang LIU, Bo-Yu PU, Yi ZHANG, Hong-Jian GAN, Jian-Ping YING
  • Publication number: 20150340157
    Abstract: A direct-current capacitor module is disclosed in this disclosure. The direct-current capacitor module includes a plurality of direct-current capacitors and a laminated busbar structure. The direct-current capacitors are grouped into a first portion and a second portion. The laminated busbar structure is electrically connected to capacitor binding posts of the direct-current capacitors. The laminated busbar structure has a positive terminal and a negative terminal. The laminated busbar structure includes a first busbar layer, a second busbar layer and an insulation layer. The first busbar layer includes a first sub-busbar layer, which is electrically connected between at least two direct-current capacitors of the first portion. The second busbar layer includes a second sub-busbar layer, which is electrically connected between at least two direct-current capacitors of the second portion. The insulation layer is disposed between the first busbar layer and the second busbar layer.
    Type: Application
    Filed: May 22, 2015
    Publication date: November 26, 2015
    Inventors: Sen-Lin WEN, Jian-Ping YING, Hong-Jian GAN, She ZHAO
  • Publication number: 20150340962
    Abstract: A five-level rectifier includes at least one phase bridge arm that includes an upper-half and a lower-half bridge arm circuit modules. The upper-half bridge arm circuit module includes a first power semiconductor switch unit, a second power semiconductor switch unit, a first diode unit, a second diode unit, a first connecting busbar, a first insulated wire and a first transfer busbar; the lower-half bridge arm circuit module includes a third power semiconductor switch unit, a fourth power semiconductor switch unit, a third diode unit, a fourth diode unit, a second connecting busbar, a second insulated wire and a second transfer busbar. The two modules are disposed side by side and facing each other.
    Type: Application
    Filed: May 22, 2015
    Publication date: November 26, 2015
    Inventors: Bing ZHANG, Li-Feng QIAO, Jian-Ping YING
  • Publication number: 20150340961
    Abstract: The disclosure provides a power converter including a cabinet, a first converter circuit module, a second converter circuit module, and a DC capacitor module. The first converter circuit module includes at least one first bridge arm. The second converter circuit module includes at least one second bridge arm. The first converter circuit module, the second converter circuit module, and the DC capacitor module are disposed in the cabinet. The second bridge arm and the first bridge arm are arranged side by side in parallel. The DC capacitor module is electrically connected between the first bridge arm and the second bridge arm, so that the first bridge arm and the second bridge arm share the DC capacitor module.
    Type: Application
    Filed: May 22, 2015
    Publication date: November 26, 2015
    Inventors: Sen-Lin WEN, Jian-Ping YING, Hong-Jian GAN, Li-Feng QIAO
  • Publication number: 20150340963
    Abstract: A three-level rectifier includes at least one phase bridge arm that includes an upper-half and a lower-half bridge arm circuit modules. The upper-half bridge arm circuit module includes a first diode unit and a second diode unit that are in series connection, and a first power semiconductor switch unit. The lower-half bridge arm circuit module includes a third diode unit and a fourth diode unit that are in series connection, and a second power semiconductor switch unit. These first and second power semiconductor switch units are connected to the neutral point of the capacitor unit; the second diode unit and the third diode unit are connected to the alternating-current terminal; the first diode unit and the fourth diode unit are respectively connected to the positive terminal and negative terminal of the direct-current bus. The two circuit modules are disposed side by side and facing each other.
    Type: Application
    Filed: May 21, 2015
    Publication date: November 26, 2015
    Inventors: Jian-Gang HUANG, Bing ZHANG, Yang-Yang TAO, Sen-Lin WEN, Li-Feng QIAO, Hong-Jian GAN, Jian-Ping YING
  • Publication number: 20150333839
    Abstract: Techniques are described for data transfer in spin-based systems where digital bit values are represented by magnetization states of magnetoresistive devices rather than voltages or currents. For data transmission, a spin-based signal is converted to an optical signal and transmitted via an optical transport. For data reception, the optical signal is received via the optical transport and converted back to a spin-based signal. Such data transfer may not require an intervening conversion of the spin-based signal to charge-based signal that relies on voltages or currents to represent digital bit values. In addition, techniques are described to use magnetoresistive devices to control the amount of current or voltage that is delivered, where the magnetization state of the magnetoresistive device is set by an optical signal.
    Type: Application
    Filed: May 16, 2014
    Publication date: November 19, 2015
    Applicant: Regents of the University of Minnesota
    Inventors: Mo Li, Jian-Ping Wang
  • Patent number: 9189004
    Abstract: A control circuit, control method used in a PFC circuit and the power source system thereof are disclosed herein. The control circuit comprises: a zero current detection circuit having a polarity detection circuit for outputting a first and a second digital signals and a signal conversion circuit for generating an analog signal; a feedback circuit for generating a driving pulse signal; and a pulse distribution circuit for distributing the driving pulse signal to a first and a second switches according to the first and the second digital signal. After a switch cycle, one of the first and the second switch performs an ON operation for the next switch cycle when the current flowing through the inductor decreases to a predetermined threshold value, wherein an ON time of the first switch is equal in each switch cycle, and an ON time of the second switch is equal in each switch cycle.
    Type: Grant
    Filed: February 5, 2013
    Date of Patent: November 17, 2015
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Hong-Yuan Jin, De-Sheng Guo, Hong-Jian Gan, Jian-Ping Ying
  • Publication number: 20150312675
    Abstract: A computer includes a digital signal processor chip. The digital signal processor chip is configured to perform an optimization and/or a sound effect operation on an audio signal. Additionally, the digital signal processor may not perform the operation on the audio signal when the earphone is not couple to a jack.
    Type: Application
    Filed: April 24, 2015
    Publication date: October 29, 2015
    Inventors: WEI ZHANG, JIAN-PING DENG, YA-FANG DING, HAI LIU
  • Publication number: 20150303791
    Abstract: A control circuit, control method used in a PFC circuit and the power source system thereof are disclosed herein. The control circuit comprises: a zero current detection circuit having a polarity detection circuit for outputting a first and a second digital signals and a signal conversion circuit for generating an analog signal; a feedback circuit for generating a driving pulse signal; and a pulse distribution circuit for distributing the driving pulse signal to a first and a second switches according to the first and the second digital signal. After a switch cycle, one of the first and the second switch performs an ON operation for the next switch cycle when the current flowing through the inductor decreases to a predetermined threshold value, wherein an ON time of the first switch is equal in each switch cycle, and an ON time of the second switch is equal in each switch cycle.
    Type: Application
    Filed: May 8, 2015
    Publication date: October 22, 2015
    Inventors: Hong-Yuan JIN, De-Sheng GUO, Hong-Jian GAN, Jian-Ping YING
  • Patent number: 9148064
    Abstract: A multi-phase switching power conversion circuit has at least three phases and includes a plurality of switching circuits, a plurality of transformers, a plurality of output rectifier circuits, a resonant network and a control circuit. The resonant network includes a plurality of symmetrical terminals and a plurality of phase branches, which are connected in a multi-phase symmetrical relationship. Each of the symmetrical terminals is connected to the output side of respective switching circuits. The phase branches are connected to a resonant common terminal such that the phase branches are in a star connection. The resonant common terminal is different from the positive terminal and the first reference terminal of the input voltage source. The control circuit is connected to an output terminal of the multi-phase switching power conversion circuit and a plurality of the control terminals of the plurality of switching circuits.
    Type: Grant
    Filed: July 7, 2010
    Date of Patent: September 29, 2015
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Teng Liu, Ziying Zhou, Jian-Ping Ying
  • Patent number: 9138899
    Abstract: A suction device includes a suction head, a fixing assembly, a rotating assembly, and a sliding assembly. The rotating assembly includes a shaft defining a spiral sliding slot. The suction head is attached to an end of the shaft. The sliding assembly is slidable and attached to the fixing assembly and includes a guiding post. An end of the guiding post is slidable and received in the spiral sliding slot. The sliding assembly is able to slide relative to the fixing assembly to slide the guiding post along the spiral sliding slot, thereby urging the shaft together with the suction head to rotate.
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: September 22, 2015
    Assignees: SHENZHEN FUTAIHONG PRECISION INDUSTRY CO., LTD., FIH (HONG KONG) LIMITED
    Inventors: Xu Gong, Bing Yu, Jian-Ping Jin
  • Publication number: 20150259154
    Abstract: A transporting mechanism includes a transporting assembly, a slave assembly, a driving assembly, and a transferring assembly. The transporting assembly includes a base plate, two side plates extended from the base plate, two parallel fixed sliding rails correspondingly positioned on the side plates, two movable sliding rails, a number of sliding blocks, and a transporting belt. Each fixed sliding rail includes a first end and a second end opposite to the first end. The transporting belt engages with the plurality of sliding blocks. The slave assembly and the driving assembly are positioned at two ends of the base plate and engage with the transporting belt. The driving assembly drives the transporting belt to carry the number of sliding blocks to slide along the fixed sliding rails. The transferring assembly and the slave assembly transfer the number of sliding blocks between the fixed sliding rails.
    Type: Application
    Filed: December 17, 2014
    Publication date: September 17, 2015
    Inventors: JIE GAO, BING YU, JIAN-PING JIN
  • Patent number: D739095
    Type: Grant
    Filed: April 29, 2013
    Date of Patent: September 15, 2015
    Assignees: HAIER GROUP CORPORATION, QINGDAO HAIER DRUM WASHING MACHINE CO., LTD.
    Inventors: Hai Shu, Wen Wei Li, Rong Shuai Cai, Jin Kai Wang, Bin Ding, Jian Ping Zhu, Chun Hui Jiang