Patents by Inventor Si Hun Yang
Si Hun Yang 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: 20240017629Abstract: An embodiment is battery charging system including an external voltage conversion device including an input unit configured to receive a system AC voltage, an output unit configured to output a charging DC voltage, and a power factor correction circuit including a first switching circuit connected to the input unit, a second switching circuit connected to the output unit, and a transformer connected between the first switching circuit and the second switching circuit, and an electrified vehicle including a charging port configured to receive the charging DC voltage, a battery, a motor having a plurality of windings, an inverter connected to each of one-side ends of the plurality of windings, and a relay connected between the charging port and a neutral terminal for the plurality of windings, the electrified vehicle controlling the relay upon recharging of the battery.Type: ApplicationFiled: November 11, 2022Publication date: January 18, 2024Inventors: Si Hun Yang, Jin Young Yang, In Yong Yeo, Jong Eun Byun, Sang Jin Kim, Dae Woo Lee, Min Seong Choi
-
Patent number: 11305655Abstract: An electric power conversion system includes: an AC-DC conversion circuit converting AC charging power into DC power; a motor including a plurality of coils, one end of each being connected to a neutral point; a first switching device selectively allowing or blocking supply of output power from the AC-DC conversion circuit to the neutral point; an inverter including a plurality of motor connection terminals connected to the other ends of the coils of the motor, respectively, DC connection terminals including a positive terminal and a negative terminal, and a plurality of switching elements forming electrical connections between the DC connection terminals and the plurality of motor connection terminals; a battery connected to the DC connection terminals of the inverter; and a controller controlling operations of the AC-DC conversion circuit, the first switching device, and the inverter in accordance with whether or not the battery is charged.Type: GrantFiled: March 11, 2020Date of Patent: April 19, 2022Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATIONInventors: Dae Woo Lee, Min Seong Choi, Si Hun Yang, Jae Eun Cha, Jin Young Yang, In Yong Yeo
-
Patent number: 11264821Abstract: The present invention relates to a bidirectional on-board charger (OBC) and a method of controlling the same. The bidirectional on-board charger according to the present invention includes: an input power source which is a power source of a charging control system; a power factor corrector (PFC) which is connected to the input power source; a direct current/direct current (DC/DC), circuit which is connected to the power factor corrector and includes a switching unit and an output terminal; a first switch which is On/Off controlled to connect any one of: a first line for connecting the input power source and the power factor corrector and a second line for connecting the power factor corrector and an output terminal of the DC/DC circuit; and a second switch which is disposed between the switching unit and the output terminal of the DC/DC circuit and On/Off controlled.Type: GrantFiled: November 25, 2019Date of Patent: March 1, 2022Assignees: Hyundai Motor Company, Kia Motors CorporationInventors: Si-Hun Yang, Jong-Pil Kim, Jin-Young Yang, Jin-Myeong Yang, Woo-Young Lee
-
Patent number: 11247576Abstract: Disclosed is a power factor correction circuit including a plurality of legs connected in parallel and each leg including two switching devices connected in series, a plurality of inductors, each inductor having one terminal connected to an interconnection node of the two switching devices in a corresponding one of the plurality of legs, and a controller configured to control on/off states of the switching devices of the plurality of legs in a pulse width modulation manner such that each of the inductors of the plurality of inductors is built up twice or more in one switching period of the switching devices when an alternating current (AC) voltage is input to the other terminal of each inductor of the plurality of inductors.Type: GrantFiled: July 8, 2020Date of Patent: February 15, 2022Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATIONInventors: In Yong Yeo, Woo Young Lee, Gyu Yeong Choe, Jin Young Yang, Ji Han Lee, Si Hun Yang, Young Jin Kim, Min Seong Choi, Jong Pil Kim
-
Patent number: 11223292Abstract: A united converter apparatus and an operating method thereof are disclosed. The united converter apparatus includes a high-voltage charger charging a high-voltage battery, using a commercial power and a low-voltage charger charging a low-voltage battery, using the high-voltage battery. The high-voltage charger includes a voltage level adjustment device boosts a voltage of the commercial power to apply the boosted voltage to the high-voltage battery and drops a high voltage applied from the high-voltage battery to apply the dropped voltage to the low-voltage charger.Type: GrantFiled: May 7, 2019Date of Patent: January 11, 2022Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATIONInventors: Jin Young Yang, Jong Pil Kim, Woo Young Lee, Ji Han Lee, Youn Sik Lee, Si Hun Yang, Jin Myeong Yang
-
Publication number: 20210178919Abstract: Disclosed is a power factor correction circuit including a plurality of legs connected in parallel and each including two switching devices connected in series, a plurality of inductors each having one terminal connected to an interconnection node of the two switching devices in a corresponding one of the legs, and a controller configured to control on/off states of the switching devices in a pulse width modulation manner such that each of the inductors is built up twice or more in one switching period of the switching devices when an alternating current (AC) voltage is input to the other terminal of each of the inductors.Type: ApplicationFiled: July 8, 2020Publication date: June 17, 2021Inventors: In Yong Yeo, Woo Young Lee, Gyu Yeong Choe, Jin Young Yang, Ji Han Lee, Si Hun Yang, Young Jin Kim, Min Seong Choi, Jong Pil Kim
-
Publication number: 20210039506Abstract: An electric power conversion system includes: an AC-DC conversion circuit converting AC charging power into DC power; a motor including a plurality of coils, one end of each being connected to a neutral point; a first switching device selectively allowing or blocking supply of output power from the AC-DC conversion circuit to the neutral point; an inverter including a plurality of motor connection terminals connected to the other ends of the coils of the motor, respectively, DC connection terminals including a positive terminal and a negative terminal, and a plurality of switching elements forming electrical connections between the DC connection terminals and the plurality of motor connection terminals; a battery connected to the DC connection terminals of the inverter; and a controller controlling operations of the AC-DC conversion circuit, the first switching device, and the inverter in accordance with whether or not the battery is charged.Type: ApplicationFiled: March 11, 2020Publication date: February 11, 2021Applicants: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATIONInventors: Dae Woo LEE, Min Seong CHOI, Si Hun YANG, Jae Eun CHA, Jin Young YANG, In Yong YEO
-
Publication number: 20200313441Abstract: The present invention relates to a bidirectional on-board charger and a method of controlling the same. The bidirectional on-board charger according to the present invention includes: an input power source which is a power source of a charging control system; a power factor corrector (PFC) which is connected to the input power source; a DC/DC circuit which is connected to the power factor corrector and includes a switching unit and an output terminal; a first switch which is On/Off controlled to connect any one of a first line for connecting the input power source and the power factor corrector and a second line for connecting the power factor corrector and an output terminal of the DC/DC circuit; and a second switch which is disposed between the switching unit and the output terminal of the DC/DC circuit and On/Off controlled. According to the present invention, there is an advantage in that a bidirectional power transfer is enabled only by adding the two switches to an OBC circuit in the related art.Type: ApplicationFiled: November 25, 2019Publication date: October 1, 2020Inventors: Si-Hun Yang, Jong-Pil Kim, Jin-Young Yang, Jin-Myeong Yang, Woo-Young Lee
-
Publication number: 20200186048Abstract: A united converter apparatus and an operating method thereof are disclosed. The united converter apparatus includes a high-voltage charger charging a high-voltage battery, using commercial power and a low-voltage charger charging a low-voltage battery, using the high-voltage battery. The high-voltage charger includes a voltage level adjustment device boosts a voltage of the commercial power to apply the boosted voltage to the high-voltage battery and drops a high voltage applied from the high-voltage battery to apply the dropped voltage to the low-voltage charger.Type: ApplicationFiled: May 7, 2019Publication date: June 11, 2020Inventors: Jin Young YANG, Jong Pil KIM, Woo Young LEE, Ji Han LEE, Youn Sik LEE, Si Hun YANG, Jin Myeong YANG
-
Patent number: 10256737Abstract: A single direct current (DC)-DC converter may include a switching part switching an input DC voltage; first and second transforming parts transforming an output of the switching part; a rectifying part rectifying outputs of each of the first and second transforming parts; and an output part filtering and outputting an output of the rectifying part.Type: GrantFiled: November 18, 2016Date of Patent: April 9, 2019Assignee: Hyundai Motor CompanyInventors: Si Hun Yang, Woo Young Lee, Young Jin Kim, Jin Young Yang, Jin Myeong Yang, Gyu Yeong Choe
-
Patent number: 10158245Abstract: A method and apparatus for controlling an on-board charger (OBC) are provided. The method includes monitoring a voltage of an input power source, increasing or decreasing the voltage of the input power source to a preset output voltage of a power factor corrector (PFC), and operating a converter receiving the preset output voltage to adjust a switching frequency of the converter based on a ripple current of an output terminal of the converter. Additionally, the converter includes a first switch configured to receive a first voltage of a first capacitor mounted within the PFC and a second switch configured to receive a second voltage of a second capacitor mounted within the PFC.Type: GrantFiled: November 28, 2016Date of Patent: December 18, 2018Assignee: Hyundai Motor CompanyInventors: Si Hun Yang, Woo Young Lee, Jun Ho Kim, Young Jin Kim, Jin Myeong Yang, Jin Young Yang
-
Patent number: 10071640Abstract: An integrated module of an OBC and an inverter includes: an OBC primary side circuit and a plurality of transformers converting, when 3-phase alternating current (AC) voltages are received from a fuel station, the 3-phase AC voltages in form and level and transmitting the converted voltages into a secondary side; and an inverter switch turned off in a charge mode in which a high capacity vehicle battery is charged, to rectify an output voltage of a secondary side of each of the plurality of transformers by a body diode included in each switching element for an inverting function.Type: GrantFiled: November 18, 2016Date of Patent: September 11, 2018Assignee: HYUNDAI MOTOR COMPANYInventors: Jin Myeong Yang, Si Hun Yang, Gyu Yeong Choe, Jin Young Yang, Han Geun Jang, Woo Young Lee
-
Patent number: 10056772Abstract: Disclosed herein is a wireless charging device including a heat radiation panel having a radiation plate and a radiation fin protruding from an upper surface of the radiation plate; a core section arranged in a region other than the protruding radiation fin, the core section being made of a material having high permeability; and a coil section arranged on the core section so as to come into contact with the protruding radiation fin.Type: GrantFiled: October 24, 2015Date of Patent: August 21, 2018Assignee: Hyundai Motor CompanyInventors: Woo Young Lee, Si Hun Yang, In Yong Yeo, Tae Jong Ha, Gyu Yeong Choe, Hyun Wook Seong
-
Patent number: 10056187Abstract: A trans inductor having a powdery magnetic substance and a power converter using the trans inductor are provided. The trans inductor and the power converter reduce peak current flowing in an inverter power module (IGBT), improve inverter efficiency, reduce output RMS current (output effective current) and reduce capacitor consumption by applying a material with properties that are resistant against current saturation instead of a core material of a conventional trans inductor employed in a power converter. Accordingly, an inductance decreasing rate due to core saturation when high current is generated is improved and current flowing in a switch device is prevented from being abruptly increased.Type: GrantFiled: November 16, 2016Date of Patent: August 21, 2018Assignee: Hyundai Motor CompanyInventors: Dae Woo Lee, Si Hun Yang, Jin Young Yang, In Yong Yeo, Byeong Seob Song, Woo Young Lee
-
Publication number: 20180069424Abstract: A method and apparatus for controlling an on-board charger (OBC) are provided. The method includes monitoring a voltage of an input power source, increasing or decreasing the voltage of the input power source to a preset output voltage of a power factor corrector (PFC), and operating a converter receiving the output voltage to adjust a switching frequency of the converter based on ripple current of an output terminal. Additionally, the converter includes a first switch configured to receive a first voltage of a first capacitor mounted within the PFC and a second switch configured to receive a second voltage of a second capacitor mounted within the PFC.Type: ApplicationFiled: November 28, 2016Publication date: March 8, 2018Inventors: Si Hun Yang, Woo Young Lee, Jun Ho Kim, Young Jin Kim, Jin Myeong Yang, Jin Young Yang
-
Publication number: 20180061566Abstract: A trans inductor having a powdery magnetic substance and a power converter using the trans inductor are provided. The trans inductor and the power converter reduce peak current flowing in an inverter power module (IGBT), improve inverter efficiency, reduce output RMS current (output effective current) and reduce capacitor consumption by applying a material with properties that are resistant against current saturation instead of a core material of a conventional trans inductor employed in a power converter. Accordingly, an inductance decreasing rate due to core saturation when high current is generated is improved and current flowing in a switch device is prevented from being abruptly increased.Type: ApplicationFiled: November 16, 2016Publication date: March 1, 2018Inventors: Dae Woo Lee, Si Hun Yang, Jin Young Yang, In Yong Yeo, Byeong Seob Song, Woo Young Lee
-
Publication number: 20180041133Abstract: A single direct current (DC)-DC converter may include a switching part switching an input DC voltage; first and second transforming parts transforming an output of the switching part; a rectifying part rectifying outputs of each of the first and second transforming parts; and an output part filtering and outputting an output of the rectifying part.Type: ApplicationFiled: November 18, 2016Publication date: February 8, 2018Applicant: Hyundai Motor CompanyInventors: Si Hun YANG, Woo Young LEE, Young Jin KIM, Jin Young YANG, Jin Myeong YANG, Gyu Yeong CHOE
-
Publication number: 20170349054Abstract: An integrated module of an OBC and an inverter includes: an OBC primary side circuit and a plurality of transformers converting, when 3-phase alternating current (AC) voltages are received from a fuel station, the 3-phase AC voltages in form and level and transmitting the converted voltages into a secondary side; and an inverter switch turned off in a charge mode in which a high capacity vehicle battery is charged, to rectify an output voltage of a secondary side of each of the plurality of transformers by a body diode included in each switching element for an inverting function.Type: ApplicationFiled: November 18, 2016Publication date: December 7, 2017Inventors: Jin Myeong YANG, Si Hun YANG, Gyu Yeong CHOE, Jin Young YANG, Han Geun JANG, Woo Young LEE
-
Patent number: 9789774Abstract: A device and method are provided for a charger for vehicles. In particular, the charger includes, an AC/DC converter configured to convert a commercial alternating current power source to a direct current power source and a DC/DC converter configured to convert the direct current power source applied from the AC/DC converter to a battery charging power source. The direct current power source is supplied to a battery. The DC/DC converter includes a snubber circuit that reduces the magnitude of a ripple current of the charging power source.Type: GrantFiled: September 3, 2015Date of Patent: October 17, 2017Assignee: Hyundai Motor CompanyInventors: Jin Young Yang, Dae Woo Lee, Jong Pil Kim, Si Hun Yang, In Yong Yeo, Byeong Seob Song, Woo Young Lee
-
Publication number: 20170170735Abstract: A resonant converter system is provided. The resonant converter system includes a secondary side of a transformer that is disposed within an LLC resonant converter. The secondary side of the transformer is configured with a single coil. Additionally, a rectifier of a secondary side of the LLC resonant converter includes a single diode.Type: ApplicationFiled: April 25, 2016Publication date: June 15, 2017Inventors: Si Hun Yang, Woo Young Lee, Young Jin Kim, Jin Young Yang, Jin Myeong Yang, Gyu Yeong Choe