Patents by Inventor Francisco Canales

Francisco Canales 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: 20210336440
    Abstract: A charging station for electric vehicles includes a central part for converting a grid AC voltage from an electrical grid into a high frequency AC voltage; a distribution network for distributing the high frequency AC voltage; and a plurality of coils directly connected to the distribution network, wherein each coil is adapted for transferring energy to an electrical vehicle.
    Type: Application
    Filed: July 2, 2021
    Publication date: October 28, 2021
    Applicant: ABB Schweiz AG
    Inventors: Francisco Canales, Ki-Bum Park
  • Publication number: 20210119442
    Abstract: A protection circuit for a power converter with cascaded bipolar and/or unipolar semiconductors is provided. The protection circuit includes at least one comparator circuit which is adapted to monitor a voltage characteristic on a collector-emitter path of at least one semiconductor which is arranged in a polarity selection stage of the power converter and/or to monitor a voltage characteristic on at least one capacitor, which is arranged in the power converter. The at least one comparator circuit is further adapted to output an electrical signal, representing the voltage characteristic of the semiconductor and/or the at least one capacitor to at least one evaluation unit. The at least one evaluation unit is further adapted to evaluate the result from the at least one comparator circuit and to deactivate the semiconductors in case that the voltage characteristic of the semiconductors and/or the capacitors deviate from a predetermined threshold.
    Type: Application
    Filed: September 1, 2020
    Publication date: April 22, 2021
    Inventors: Sami Pettersson, Mario Schweizer, Ki-Bum Park, Francisco Canales
  • Publication number: 20210018554
    Abstract: Transformer assembly including a first transformer stage having a plurality of first-stage transformer cells; and a second transformer stage. An input of the second transformer stage is connected to an output of the first transformer stage. A lightning impulse breakdown voltage of a transformer cell of the second stage is at least double of a lightning impulse breakdown voltage of transformer cells of the first stage.
    Type: Application
    Filed: July 10, 2020
    Publication date: January 21, 2021
    Inventors: Uwe Drofenik, Thomas Gradinger, Francisco Canales
  • Patent number: 10797586
    Abstract: A power module included a plurality of normally-on semiconductor switches based on a wide bandgap substrate, the normally-on semiconductor switches connected in parallel; and a balancing unit including a capacitor and a balancing semiconductor switch connected in series, which are connected in parallel to the normally-on semiconductor switches.
    Type: Grant
    Filed: October 25, 2019
    Date of Patent: October 6, 2020
    Assignee: ABB Schweiz AG
    Inventors: Uwe Drofenik, Francisco Canales, Chunlei Liu, Franziska Brem
  • Patent number: 10673353
    Abstract: A converter cell for a modular converter includes at least one power semiconductor switch for switching a cell current through the converter cell; a cell capacitor interconnected with the at least one power semiconductor switch, such that the cell capacitor is loadable by the cell current; a controller for switching the at least one power semiconductor switch, wherein the controller is supplyable with auxiliary power from the cell capacitor; and a photovoltaic cell for providing initial and/or further auxiliary power to the controller.
    Type: Grant
    Filed: May 30, 2018
    Date of Patent: June 2, 2020
    Assignee: ABB Schweiz AG
    Inventors: Uwe Drofenik, Franziska Brem, Francisco Canales
  • Publication number: 20200106384
    Abstract: An inverter arrangement based on photovoltaic elements includes at least two strings including switching elements, which strings are connected to at least two AC terminals, where at least one of the strings is a string of submodules, each submodule including at least two switching elements and an energy storage element, having DC terminals and being configured to make a voltage contribution to the forming of an AC voltage on an AC terminal, and a number of input stages each including at least one energy delivery element, where at least some of the energy delivery elements are photovoltaic elements, each input stage being connected to DC terminals of a corresponding for delivering power to or from at least one AC terminal when the corresponding submodule contributes to the forming of the AC voltage on the AC terminal.
    Type: Application
    Filed: October 1, 2019
    Publication date: April 2, 2020
    Inventors: Cicero Postiglione, Frans Dijkhuizen, Jan Svensson, Alireza Nami, Francisco Canales
  • Publication number: 20200059155
    Abstract: A power module included a plurality of normally-on semiconductor switches based on a wide bandgap substrate, the normally-on semiconductor switches connected in parallel; and a balancing unit including a capacitor and a balancing semiconductor switch connected in series, which are connected in parallel to the normally-on semiconductor switches.
    Type: Application
    Filed: October 25, 2019
    Publication date: February 20, 2020
    Inventors: Uwe Drofenik, Francisco Canales, Chunlei Liu, Franziska Brem
  • Patent number: 10396676
    Abstract: The invention relates to a bidirectional DC-DC converter with intermediate conversion into AC power, including: a DC-AC conversion circuit using a plurality of MOSFETs; an AC-DC conversion circuit using a plurality of power diodes; a transformer; a pair of switches, one of which being inserted in series between a DC terminal of the DC-AC conversion circuit and the AC-DC conversion circuit and the other of which being inserted in series between another DC terminal of the DC-AC conversion circuit and the AC-DC conversion circuit; and a controller being adapted for turning on the pair of switches such that the plurality of power diodes of the AC-DC conversion circuit are reverse-biased where the AC power is transferred in the forward direction and turning off the pair of switches where the AC power is transferred in the backward direction.
    Type: Grant
    Filed: September 17, 2018
    Date of Patent: August 27, 2019
    Assignee: ABB Schweiz AG
    Inventors: Xiaobo Yang, Kuenfaat Yuen, Guoxing Fan, Dawei Yao, Francisco Canales
  • Patent number: 10374431
    Abstract: A converter system for interconnecting renewable energy sources with a DC distribution bus comprises a converter unit which comprises an isolated DC-to-DC converter connectable to the renewable energy source, and a non-isolated DC-to-DC converter connectable to the DC distribution bus, which is cascade connected with the isolated DC-to-DC converter.
    Type: Grant
    Filed: January 17, 2017
    Date of Patent: August 6, 2019
    Assignee: ABB Schweiz AG
    Inventors: Francisco Canales, Frederick Kieferndorf, Drazen Dujic
  • Patent number: 10277144
    Abstract: The present invention is concerned with a four-level voltage source converter topology including two intermediate converter branches connecting two intermediate voltage levels to a load terminal, and including a interconnect switch coupling the two intermediate branches. The interconnect switch replaces two controlled switches present in corresponding four-level prior art topologies. The four-level converter thus requires, for a full bidirectional implementation, only five active switches. The reduced number of active switches/gate drivers and the four available output voltage levels make this solution interesting for lower cost power electronics with improved reliability, good power quality and minimized filtering requirement.
    Type: Grant
    Filed: May 24, 2018
    Date of Patent: April 30, 2019
    Assignee: ABB Schweiz AG
    Inventors: Thiago-Batista Soeiro, Francisco Canales
  • Publication number: 20190020281
    Abstract: The invention relates to a bidirectional DC-DC converter with intermediate conversion into AC power, including: a DC-AC conversion circuit using a plurality of MOSFETs; and an AC-DC conversion circuit using a plurality of power diodes; a transformer magnetically coupling a first winding and a second winding, wherein the first winding being electrically connected between the DC-AC conversion circuit AC terminals and being electrically connected between the AC-DC conversion circuit AC terminals in an arrangement such that the AC power generated from the intermediate conversion by an operation of the DC-AC conversion is transferred by the transformer in a forward direction from the first winding to the second winding, and the AC-DC conversion circuit converts the AC power transferred in a backward direction from the second winding to the first winding into DC power; a pair of switches, one of which being inserted in series between respective DC terminals of the DC-AC conversion circuit and the AC-DC conversion c
    Type: Application
    Filed: September 17, 2018
    Publication date: January 17, 2019
    Inventors: Xiaobo Yang, Kuenfaat Yuen, Guoxing Fan, Dawei Yao, Francisco Canales
  • Publication number: 20180351474
    Abstract: A converter cell for a modular converter includes at least one power semiconductor switch for switching a cell current through the converter cell; a cell capacitor interconnected with the at least one power semiconductor switch, such that the cell capacitor is loadable by the cell current; a controller for switching the at least one power semiconductor switch, wherein the controller is supplyable with auxiliary power from the cell capacitor; and a photovoltaic cell for providing initial and/or further auxiliary power to the controller.
    Type: Application
    Filed: May 30, 2018
    Publication date: December 6, 2018
    Inventors: Uwe Drofenik, Franziska Brem, Francisco Canales
  • Publication number: 20180269803
    Abstract: The present invention is concerned with a four-level voltage source converter topology including two intermediate converter branches connecting two intermediate voltage levels to a load terminal, and including a interconnect switch coupling the two intermediate branches. The interconnect switch replaces two controlled switches present in corresponding four-level prior art topologies. The four-level converter thus requires, for a full bidirectional implementation, only five active switches. The reduced number of active switches/gate drivers and the four available output voltage levels make this solution interesting for lower cost power electronics with improved reliability, good power quality and minimized filtering requirement.
    Type: Application
    Filed: May 24, 2018
    Publication date: September 20, 2018
    Inventors: Thiago-Batista Soeiro, Francisco Canales
  • Patent number: 9996129
    Abstract: An uninterruptible power supply system includes an AC input interface and a DC output interface, and a plurality of power supply paths coupled between the AC and DC interfaces. A first one of the power supply paths has a lower component count, whereas a second one of the power supply paths has a higher component count. At least one of the power supply paths is structured to supply DC electrical power to a power bus in the DC output interface at a varying voltage.
    Type: Grant
    Filed: August 13, 2015
    Date of Patent: June 12, 2018
    Assignee: ABB SCHWEIZ AG
    Inventors: Sara Ahmed, Zhenyuan Wang, Francisco Canales
  • Patent number: 9843199
    Abstract: An exemplary inductive power transfer system having a transmitter coil and a receiver coil. A transmitter-side power converter having a mains rectifier stage powering a transmitter-side dc-bus and controlling a transmitter-side dc-bus voltage U1,dc. A transmitter-side inverter stage with a switching frequency fsw supplies the transmitter coil with an alternating current. A receiver-side power converter having a receiver-side rectifier stage that rectifies a voltage induced in the receiver coil and powering a receiver-side dc-bus and a receiver-side charging converter controlling a receiver-side dc-bus voltage U2,dc. Power controllers that determine from a power transfer efficiency of the power transfer, reference values U1,dc*, U2,dc* for the transmitter and receiver side dc-bus voltages. An inverter stage switching controller controls the switching frequency fsw to reduce losses in the transmitter-side inverter stage.
    Type: Grant
    Filed: March 30, 2015
    Date of Patent: December 12, 2017
    Assignee: ABB Schweiz AG
    Inventors: Roman Bosshard, Johann Walter Kolar, Francisco Canales, Beat Guggisberg, Guanghai Gong, Bernhard Wunsch
  • Publication number: 20170126010
    Abstract: A converter system for interconnecting renewable energy sources with a DC distribution bus comprises a converter unit which comprises an isolated DC-to-DC converter connectable to the renewable energy source, and a non-isolated DC-to-DC converter connectable to the DC distribution bus, which is cascade connected with the isolated DC-to-DC converter.
    Type: Application
    Filed: January 17, 2017
    Publication date: May 4, 2017
    Inventors: Francisco Canales, Frederick Kieferndorf, Drazen Dujic
  • Publication number: 20170063247
    Abstract: The present disclosure describes a modulation method for controlling at least two parallel-connected, multi-phase power converters. The method comprises generating synchronized switching sequences for the power converters on the basis of a common modulation reference, wherein each synchronized switching sequence comprises a first half sequence followed by a second half sequence, and wherein, for at least one of the power converters, the first half sequence is a rising-edge half sequence rising-edge half sequence and the second half sequence is a falling-edge half sequence, and, for at least one other of the power converters, the first half sequence is a falling-edge half sequence and the second half sequence is a rising-edge half sequence.
    Type: Application
    Filed: August 22, 2016
    Publication date: March 2, 2017
    Inventors: FREDERICK KIEFERNDORF, KI-BUM PARK, TERO VIITANEN, SAMI PETTERSSON, FRANCISCO CANALES
  • Publication number: 20170045924
    Abstract: An uninterruptible power supply system includes an AC input interface and a DC output interface, and a plurality of power supply paths coupled between the AC and DC interfaces. A first one of the power supply paths has a lower component count, whereas a second one of the power supply paths has a higher component count. At least one of the power supply paths is structured to supply DC electrical power to a power bus in the DC output interface at a varying voltage.
    Type: Application
    Filed: August 13, 2015
    Publication date: February 16, 2017
    Inventors: Sara Ahmed, Zhenyuan Wang, Francisco Canales
  • Patent number: 9559607
    Abstract: A power supply system includes an AC input interface, a DC output interface, and each of a single-conversion power supply path and a multi-conversion power supply path extending between the AC input interface and the DC output interface. Operating the system in a first or standard mode includes conveying electrical power between an AC power supply and an electrical load by way of the single-conversion power supply path. Operation in a second or non-standard operation mode includes conveying the electrical power by way of the multi-conversion power supply path.
    Type: Grant
    Filed: August 25, 2015
    Date of Patent: January 31, 2017
    Assignee: ABB SCHWEIZ AG
    Inventors: Zhenyuan Wang, Sara Ahmed, Francisco Canales
  • Patent number: 9525348
    Abstract: A converter for connecting a voltage source to a load includes a plurality of ICBT (integrated capacitor blocked transistor) cells configured as switches and connected in series to form a series connection path, a main capacitor connected across the series connection path, and a controller. Each ICBT cell includes a main transistor disposed in the series connection path and a series connected auxiliary transistor and auxiliary capacitor coupled in parallel with the main transistor. The controller is operable to develop a voltage across the main capacitor which exceeds a voltage rating of the ICBT cells, by switching the ICBT cells so as to commutate current within the individual ICBT cells without the ICBT cells providing active power to the load so that power flow is from the voltage source, to the main capacitor, to the load and not through the auxiliary transistors and the auxiliary capacitors.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: December 20, 2016
    Assignee: ABB Schweiz AG
    Inventors: Eddy Aeloiza, Francisco Canales, Rolando Burgos