Patents by Inventor Yan-Song Lu

Yan-Song Lu 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: 10027239
    Abstract: A wind power converter device is provided. The wind power converter device includes grid side converters, generator side converters and a DC bus module. Each of the grid side converters includes grid side outputs electrically coupled to a grid and a first and a second DC inputs. Each two of the neighboring grid side converters are connected in series at the second and the first DC inputs. Each of the generator side converters includes generator side inputs electrically coupled to a generator device and a first and a second DC outputs. Each two of the neighboring generator side converters are coupled in series at the second and the first DC outputs. The DC bus module is electrically coupled between the grid side converters and the generator side converters.
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: July 17, 2018
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Chang-Yong Wang, Li Cai, Yan-Song Lu
  • Publication number: 20170366096
    Abstract: A wind power converter device is provided. The wind power converter device includes grid side converters, generator side converters and a DC bus module. Each of the grid side converters includes grid side outputs electrically coupled to a grid and a first and a second DC inputs. Each two of the neighboring grid side converters are connected in series at the second and the first DC inputs. Each of the generator side converters includes generator side inputs electrically coupled to a generator device and a first and a second DC outputs. Each two of the neighboring generator side converters are coupled in series at the second and the first DC outputs. The DC bus module is electrically coupled between the grid side converters and the generator side converters.
    Type: Application
    Filed: August 10, 2017
    Publication date: December 21, 2017
    Inventors: Chang-Yong WANG, Li CAI, Yan-Song LU
  • Patent number: 9768706
    Abstract: A wind power converter device is provided. The wind power converter device includes grid side converters, generator side converters and a DC bus module. Each of the grid side converters includes grid side outputs electrically coupled to a grid and a first and a second DC inputs. Each two of the neighboring grid side converters are connected in series at the second and the first DC inputs. Each of the generator side converters includes generator side inputs electrically coupled to a generator device and a first and a second DC outputs. Each two of the neighboring generator side converters are coupled in series at the second and the first DC outputs. The DC bus module is electrically coupled between the grid side converters and the generator side converters.
    Type: Grant
    Filed: July 9, 2015
    Date of Patent: September 19, 2017
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Chang-Yong Wang, Li Cai, Yan-Song Lu
  • Publication number: 20160069327
    Abstract: A wind power converter device is provided. The wind power converter device includes grid side converters, generator side converters and a DC bus module. Each of the grid side converters includes grid side outputs electrically coupled to a grid and a first and a second DC inputs. Each two of the neighboring grid side converters are connected in series at the second and the first DC inputs. Each of the generator side converters includes generator side inputs electrically coupled to a generator device and a first and a second DC outputs. Each two of the neighboring generator side converters are coupled in series at the second and the first DC outputs. The DC bus module is electrically coupled between the grid side converters and the generator side converters.
    Type: Application
    Filed: July 9, 2015
    Publication date: March 10, 2016
    Inventors: Chang-Yong WANG, Li CAI, Yan-Song LU
  • Patent number: 9257929
    Abstract: The present invention provides an excitation control circuit, a control method using the same and an electrically excited wind power system having the same. The excitation control circuit comprises at least one converter and at least one AC/DC conversion module. The converter is located between an AC electric grid and a wind power generator, so as to convert AC power generated by the wind power generator into AC power corresponding to the AC electric grid. The input side of the AC/DC conversion module is electrically connected between the converter and the wind power generator, and the output side is coupled to an excitation device. The AC/DC conversion module is used to convert the AC power from the wind power generator into a DC voltage, and provides an excitation current for the wind power generator using the DC voltage.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: February 9, 2016
    Assignee: DELTA ELECTRONICS (SHANGHAI) CO., LTD.
    Inventors: Chang-Yong Wang, Yan-Song Lu, Jun Chen, Xue-Xiao Luo, Jun-Sheng Mu
  • Patent number: 9166491
    Abstract: A converter system includes a first converter, a second converter, and a first inter-phase transformer. The first converter is electrically connected to the second converter in parallel between a first input terminal parallel end and a first output terminal parallel end. The first inter-phase transformer is disposed at the first input side parallel terminal or the first output side parallel terminal, and the first inter-phase transformer is operable to restrain a circulating current generated by the first converter and the second converter.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: October 20, 2015
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Chang-Yong Wang, Yan-Song Lu, Li Cai, Jun Chen, Teng Xu
  • Patent number: 9007788
    Abstract: The present invention provides an excitation control circuit and the electrically excited wind power system having the same. The excitation control circuit includes a plurality of full-power converters, each of which has a generator-side converter and a grid-side converter; a DC excitation module including a plurality of DC-DC converters; and a control module, controlling or switching any DC-DC converter working normally, and controlling excitation switch turning ON or turning OFF.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: April 14, 2015
    Assignee: Delta Electronics (Shanghai) Co., Ltd.
    Inventors: Yan-Song Lu, Chang-Yong Wang, Jun Chen, Xue-Xiao Luo, Jun-Sheng Mu
  • Patent number: 8957664
    Abstract: A device and a method for detecting a crowbar circuit in a wind turbine are provided, wherein the wind turbine comprises a converter electrically connected to the crowbar circuit, and the method comprises: electrically coupling a detection module to the crowbar circuit; inputting a first control signal into the crowbar circuit, to turn on the crowbar circuit; providing a three-phase voltage signal to the crowbar circuit via the converter, wherein voltage signals in any two adjacent phases has a predetermined phase angle difference; reading the first detection signal outputted by the detection module, to determine whether the crowbar circuit is normally thrown into the wind turbine; inputting a second control signal to the crowbar circuit, to turn off the crowbar circuit; and reading again the second detection signal outputted by the detection module, to determine whether the crowbar circuit is normally cut out from the wind turbine.
    Type: Grant
    Filed: July 19, 2012
    Date of Patent: February 17, 2015
    Assignee: Delta Electronics (Shanghai) Co., Ltd.
    Inventors: Liang Cao, Li Cai, Yan-Song Lu
  • Patent number: 8823190
    Abstract: A wind power converter structure and a wind power generation system including the converter structure are provided. The converter structure includes a plurality of generator-side converters arranged in a nacelle located on a top part of the tower; a plurality of grid-side converters arranged on a bottom part of the tower or outside the tower, wherein a DC input side of the grid-side converter is coupled to a DC output side of the generator-side converter; at least one DC bus connected between the generator-side converter and the grid-side converter; and an isolation transformer of which a primary side is coupled to the AC output side of the grid-side converter, wherein a secondary side of the isolation transformer is coupled to a power grid.
    Type: Grant
    Filed: September 12, 2012
    Date of Patent: September 2, 2014
    Assignee: Delta Electronics (Shanghai) Co., Ltd.
    Inventors: Chang-Yong Wang, Yan-Song Lu, Shu-Sun Qu
  • Publication number: 20140021937
    Abstract: A converter system includes a first converter, a second converter, and a first inter-phase transformer. The first converter is electrically connected to the second converter in parallel between a first input terminal parallel end and a first output terminal parallel end. The first inter-phase transformer is disposed at the first input side parallel terminal or the first output side parallel terminal, and the first inter-phase transformer is operable to restrain a circulating current generated by the first converter and the second converter.
    Type: Application
    Filed: March 15, 2013
    Publication date: January 23, 2014
    Applicant: DELTA ELECTRONICS, INC.
    Inventors: Chang-Yong WANG, Yan-Song LU, Li CAI, Jun CHEN, Teng XU
  • Publication number: 20130272038
    Abstract: The present invention provides an excitation control circuit, a control method using the same and an electrically excited wind power system having the same. The excitation control circuit comprises at least one converter and at least one AC/DC conversion module. The converter is located between an AC electric grid and a wind power generator, so as to convert AC power generated by the wind power generator into AC power corresponding to the AC electric grid. The input side of the AC/DC conversion module is electrically connected between the converter and the wind power generator, and the output side is coupled to an excitation device. The AC/DC conversion module is used to convert the AC power from the wind power generator into a DC voltage, and provides an excitation current for the wind power generator using the DC voltage.
    Type: Application
    Filed: September 14, 2012
    Publication date: October 17, 2013
    Applicant: DELTA ELECTRONICS (SHANGHAI) CO., LTD.
    Inventors: Chang-Yong WANG, Yan-Song LU, Jun CHEN, Xue-Xiao LUO, Jun-Sheng MU
  • Patent number: 8552577
    Abstract: A wind-power generation system with an over-speed protection is disclosed. The system is provided to convert wind energy into mechanical energy by a wind turbine, and mechanical energy is converted into electric energy by the wind turbine driving a generator. Also, electric energy is delivered to a power grid. The wind-power generation system mainly includes an AC crowbar, a fuse, and a DC chopper. The AC crowbar or the DC chopper is provided to consume superfluous energy outputted from the generator, thus providing an over-load operation to brake the wind turbine when the wind turbine operates under a first stage over-speed operation. Finally, the generator is isolated from the generator-side converter by disconnecting the fuse when the wind turbine operates under a second stage over-speed operation.
    Type: Grant
    Filed: May 8, 2012
    Date of Patent: October 8, 2013
    Assignee: Delta Electronics (Shanghai) Co., Ltd.
    Inventors: Yan-Song Lu, Jun Chen, Xue-Xiao Luo
  • Publication number: 20130182465
    Abstract: A wind power converter structure and a wind power generation system including the converter structure are provided. The converter structure comprises a plurality of generator-side converters arranged in a nacelle located on a top part of the tower; a plurality of grid-side converters arranged on a bottom part of the tower or outside the tower, wherein a DC input side of the grid-side converter is coupled to a DC output side of the generator-side converter; at least one DC bus connected between the generator-side converter and the grid-side converter; and an isolation transformer of which a primary side is coupled to the AC output side of the grid-side converter, wherein a secondary side of the isolation transformer is coupled to a power grid.
    Type: Application
    Filed: September 12, 2012
    Publication date: July 18, 2013
    Applicant: DELTA ELECTRONICS (SHANGHAI) CO., LTD.
    Inventors: Chang-Yong Wang, Yan-Song Lu, Shu-Sun Qu
  • Publication number: 20130182466
    Abstract: The present invention provides an excitation control circuit and the electrically excited wind power system having the same. The excitation control circuit includes a plurality of full-power converters, each of which has a generator-side converter and a grid-side converter; a DC excitation module including a plurality of DC-DC converters; and a control module, controlling or switching any DC-DC converter working normally, and controlling excitation switch turning ON or turning OFF.
    Type: Application
    Filed: September 13, 2012
    Publication date: July 18, 2013
    Applicant: DELTA ELECTRONICS (SHANGHAI) CO., LTD.
    Inventors: Yan-Song LU, Chang-Yong WANG, Jun CHEN, Xue-Xiao LUO, Jun-Sheng MU
  • Publication number: 20130076336
    Abstract: A device and a method for detecting a crowbar circuit in a wind turbine are provided, wherein the wind turbine comprises a converter electrically connected to the crowbar circuit, and the method comprises: electrically coupling a detection module to the crowbar circuit; inputting a first control signal into the crowbar circuit, to turn on the crowbar circuit; providing a three-phase voltage signal to the crowbar circuit via the converter, wherein voltage signals in any two adjacent phases has a predetermined phase angle difference; reading the first detection signal outputted by the detection module, to determine whether the crowbar circuit is normally thrown into the wind turbine; inputting a second control signal to the crowbar circuit, to turn off the crowbar circuit; and reading again the second detection signal outputted by the detection module, to determine whether the crowbar circuit is normally cut out from the wind turbine.
    Type: Application
    Filed: July 19, 2012
    Publication date: March 28, 2013
    Applicant: DELTA ELECTRONICS (SHANGHAI) CO., LTD.
    Inventors: Liang Cao, Li Cai, Yan-Song Lu
  • Publication number: 20130056985
    Abstract: A wind-power generation system with an over-speed protection is disclosed. The system is provided to convert wind energy into mechanical energy by a wind turbine, and mechanical energy is converted into electric energy by the wind turbine driving a generator. Also, electric energy is delivered to a power grid. The wind-power generation system mainly includes an AC crowbar, a fuse, and a DC chopper. The AC crowbar or the DC chopper is provided to consume superfluous energy outputted from the generator, thus providing an over-load operation to brake the wind turbine when the wind turbine operates under a first stage over-speed operation. Finally, the generator is isolated from the generator-side converter by disconnecting the fuse when the wind turbine operates under a second stage over-speed operation.
    Type: Application
    Filed: May 8, 2012
    Publication date: March 7, 2013
    Inventors: Yan-Song LU, Jun Chen, Xue-Xiao Luo
  • Patent number: 8143743
    Abstract: A method of controlling an uninterruptible power supply apparatus (UPS) is provided. The UPS apparatus includes at least an AC input voltage, a DC input voltage and a single-phase AC/AC converter. The single-phase AC/AC converter includes an AC inductor, a bus capacitor, a boost arm, a common arm and a buck arm. The method includes steps of: controlling the bus voltage to have a DC component and full-wave rectifying component, and setting a bus voltage parameter K so that the bus voltage approaches to a full-wave rectifying voltage when K approaches to 1, wherein 0?K?1.
    Type: Grant
    Filed: July 29, 2010
    Date of Patent: March 27, 2012
    Assignee: Delta Electronics, Inc.
    Inventors: Yan-Song Lu, Jing-Tao Tan, Jian-Ping Yang, Jian-Ping Ying
  • Patent number: 7944089
    Abstract: An uninterruptible power supply module is provided. The uninterruptible power supply module comprises an input terminal, a direct-current voltage source, a control module, a control arm-bridge module, an inductive element, a power source selection switch, and a switch element. The switch element is turned on before the power source selection switch is connected to the inductive element so that the direct-current voltage supplied by the direct-current voltage source is modulated by the control arm-bridge module to generate an output alternating current voltage to the load. And the switch element is turned off, i.e. not conducting electricity, after the power source selection switch is connected to the inductive element and the direct-current voltage source. Thereby, the use life of the power source selection switch element and the reliability of the uninterruptible power supply module are both increased.
    Type: Grant
    Filed: January 16, 2009
    Date of Patent: May 17, 2011
    Assignee: Delta Electronics, Inc.
    Inventors: Yan-Song Lu, Fei Lv, Jing-Tao Tan, Jian-Ping Ying
  • Publication number: 20100308658
    Abstract: A method of controlling an uninterruptible power supply apparatus (UPS) is provided. The UPS apparatus includes at least an AC input voltage, a DC input voltage and a single-phase AC/AC converter. The single-phase AC/AC converter includes an AC inductor, a bus capacitor, a boost arm, a common arm and a buck arm. The method includes steps of: controlling the bus voltage to have a DC component and full-wave rectifying component, and setting a bus voltage parameter K so that the bus voltage approaches to a full-wave rectifying voltage when K approaches to 1, wherein 0?K?1.
    Type: Application
    Filed: July 29, 2010
    Publication date: December 9, 2010
    Applicant: DELTA ELECTRONICS, INC.
    Inventors: Yan-Song LU, Jing-Tao TAN, Jian-Ping YANG, Jian-Ping YING
  • Patent number: 7710087
    Abstract: A power converter and a power converting method are provided. The power converter for converting an ac input voltage at an input terminal thereof into an ac output voltage at an output terminal thereof includes an energy-storing inductor, a first switching circuit coupled to the energy-storing inductor to selectively switch so that the input terminal of the power converter is coupled to the energy-storing inductor, a second switching circuit coupled to the energy-storing inductor and the first switching circuit to selectively switch so that a common terminal of the power converter is coupled to the energy-storing inductor; and a third switching circuit coupled to the energy-storing inductor, the first switching circuit and the second switching circuit to selectively switch so that the output terminal of the power converter is coupled to the energy-storing inductor.
    Type: Grant
    Filed: July 11, 2007
    Date of Patent: May 4, 2010
    Assignee: Delta Electronics, Inc.
    Inventors: Jing-Tao Tan, Yan-Song Lu, Qiu-Hua Zhu, Wen-Yin Tsai