Patents by Inventor Esa Kai Paatero

Esa Kai Paatero 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: 11863014
    Abstract: A power supply assembly including an alternating current primary source connection, a direct current secondary source connection, an alternating current load connection, a DC link, a direct-current converter connected electrically between the secondary source connection and the DC link, and a load supply converter connected electrically between the DC link and the load connection. The power supply assembly includes a trickle charger converter connected electrically between at least one alternating current connection and the secondary source connection, a nominal power of the trickle charger converter being less than nominal powers of the direct-current converter and the load supply converter.
    Type: Grant
    Filed: February 16, 2022
    Date of Patent: January 2, 2024
    Assignee: ABB Schweiz AG
    Inventor: Esa-Kai Paatero
  • Patent number: 11757302
    Abstract: A power supply assembly including a primary source connection, a secondary source connection, a load connection, a primary current supply route, a supply switch system, and a converter system. The supply switch system is electrically located in the primary current supply route, and adapted for disconnecting the primary source connection from the load connection, the supply switch system including a plurality of supply switch units connected in parallel, each of the supply switch units including a controllable semiconductor switch. The power supply assembly includes a series impedance system having at least one series impedance member, and adapted to provide a balancing voltage drop for each of the parallel connected supply switch units of the supply switch system, wherein the balancing voltage drop is in series with a corresponding supply switch unit.
    Type: Grant
    Filed: May 16, 2022
    Date of Patent: September 12, 2023
    Assignee: ABB Schweiz AG
    Inventors: Esa-Kai Paatero, Alessandro Antoniazza, Matteo Cogliati
  • Publication number: 20220368155
    Abstract: A power supply assembly including a primary source connection, a secondary source connection, a load connection, a primary current supply route, a supply switch system, and a converter system. The supply switch system is electrically located in the primary current supply route, and adapted for disconnecting the primary source connection from the load connection, the supply switch system including a plurality of supply switch units connected in parallel, each of the supply switch units including a controllable semiconductor switch. The power supply assembly includes a series impedance system having at least one series impedance member, and adapted to provide a balancing voltage drop for each of the parallel connected supply switch units of the supply switch system, wherein the balancing voltage drop is in series with a corresponding supply switch unit.
    Type: Application
    Filed: May 16, 2022
    Publication date: November 17, 2022
    Inventors: Esa-Kai Paatero, Alessandro Antoniazza, Matteo Cogliati
  • Patent number: 11500033
    Abstract: The present invention provides a method for detecting a ground fault in a battery of a uninterrupted power supply, the battery includes at least one string with multiple battery cells, the method including the steps of defining multiple individual battery blocks of battery cells along the at least one string, performing an reference impedance measurement for the multiple individual battery blocks at a first point of time, performing a verification impedance measurement for the multiple individual battery blocks at a second point of time, evaluating a change of measured impedance between the reference impedance and the verification impedance for the multiple individual battery blocks of the at least one string, and identifying a ground fault based on a correlated change of measured impedance of the multiple individual battery blocks along the at least one string.
    Type: Grant
    Filed: January 7, 2020
    Date of Patent: November 15, 2022
    Assignee: ABB SCHWEIZ AG
    Inventors: Daniel Aggeler, Esa-Kai Paatero, Ivan Furlan, Nicola Notari, Yannick Maret
  • Publication number: 20220360083
    Abstract: A power supply assembly including a source connection system including a primary source connection, a load connection, a converter system including at least one converter controllable for reactive power compensation, an energy saving transfer route connecting the primary source connection electrically to the load connection, and bypassing the converter system, and a control system. The control system is adapted to provide an efficiency optimization operation including transferring energy through the energy saving transfer route, and controlling the converter system according to an optimal operating scheme that optimizes efficiency of the power supply assembly while keeping reactive power drawn from the source connection system within a required range, wherein the optimal operating scheme defines an optimal combination for the converters used for reactive power compensation such that each of the converters operates in a predetermined optimal efficiency range thereof.
    Type: Application
    Filed: November 6, 2020
    Publication date: November 10, 2022
    Inventor: Esa-Kai Paatero
  • Publication number: 20220271561
    Abstract: A power supply assembly including an alternating current primary source connection, a direct current secondary source connection, an alternating current load connection, a DC link, a direct-current converter connected electrically between the secondary source connection and the DC link, and a load supply converter connected electrically between the DC link and the load connection. The power supply assembly includes a trickle charger converter connected electrically between at least one alternating current connection and the secondary source connection, a nominal power of the trickle charger converter being less than nominal powers of the direct-current converter and the load supply converter.
    Type: Application
    Filed: February 16, 2022
    Publication date: August 25, 2022
    Inventor: Esa-Kai Paatero
  • Patent number: 11404902
    Abstract: A converter assembly including a source connection system including a primary source connection, and a plurality of secondary source connections, a load connection system including a load connection, a secondary source bus bar system, a switch system including a plurality of switch units each connected electrically between a corresponding secondary source connection and the secondary source bus bar system, and at least one converter module including a DC link and a secondary source side converter. Each switch unit of the switch system includes a first switch and a second switch connected in parallel, wherein the first switch has a higher switching speed than the second switch, and the second switch has a lower conduction losses than the first switch.
    Type: Grant
    Filed: October 19, 2020
    Date of Patent: August 2, 2022
    Assignee: ABB Schweiz AG
    Inventor: Esa-Kai Paatero
  • Publication number: 20220200330
    Abstract: A system and method for an uninterruptible power supply (UPS) includes a first converter assembly, a second converter assembly, a third converter assembly, a first controlled device configured for disconnecting at least two converters of the first converter assembly from and AC source, and a second controlled device configured for connecting at least two of the first converters together, and comprising the step of: opening the first controlled device and closing the second controlled device such that the first converter assembly transfers energy between split DC link halves to maintain voltage regulation of the DC link with respect to the midpoint reference.
    Type: Application
    Filed: March 10, 2022
    Publication date: June 23, 2022
    Applicant: ABB Schweiz AG
    Inventors: Esa-kai Paatero, Nicola Notari
  • Patent number: 11342786
    Abstract: The present application includes an uninterruptable power supply device for connection of a 3-wire multiphase AC source to a 3-wire multiphase load, whereby the UPS device is provided for multiphase operation, including a converter part, which is connected to at least one power source and the load, and a 3-wire bypass, which interconnects the AC source to the load, whereby the bypass includes a bypass switch, which includes an independently controlled switching unit for each phase of the AC source, and the UPS device includes a control unit, which controls the converter part and the bypass switch, whereby the control unit controls the bypass switch to power one of the three phases of the load directly via the bypass by one phase of the AC source, and the control unit controls the converter part to power the remaining two phases of the load.
    Type: Grant
    Filed: May 9, 2019
    Date of Patent: May 24, 2022
    Assignee: ABB SCHWEIZ AG
    Inventor: Esa-Kai Paatero
  • Patent number: 11290016
    Abstract: A converter assembly including a source connection system comprising a primary source connection, and at least one secondary source connection; a load connection system; a primary source converter including a primary rectifier connected electrically to the primary source connection, and having a boost topology, and a DC link connected electrically between the primary rectifier and the load connection system, the DC link including DC link capacitance; a secondary source converter, which is a direct-current converter having a boost topology, connected electrically between the at least one secondary source connection and the DC link; and a pre-charge converter adapted for pre-charging the DC link capacitance. The pre-charge converter includes a pre-charge direct-current converter having a step down topology.
    Type: Grant
    Filed: October 9, 2020
    Date of Patent: March 29, 2022
    Assignee: ABB Schweiz AG
    Inventors: Esa-Kai Paatero, Nicola Notari
  • Patent number: 11211818
    Abstract: A power supply assembly including a load supply converter system and energy saving transfer route both connected electrically to a load connection. The energy saving transfer route bypasses the load supply converter system, and includes a bypass switch system having a first bypass switch and second bypass switch connected in series. A control system of the power supply assembly is adapted to provide a system diagnostic operation including providing a diagnostic state for the bypass switch system by controlling the first bypass switch into a non-conducting state, and controlling the second bypass switch into a conducting state, generating a diagnostic voltage in an output of the load supply converter system, and detecting a short circuit incident if an electric current flowing through the bypass switch system exceeds a predetermined short circuit threshold value.
    Type: Grant
    Filed: January 25, 2021
    Date of Patent: December 28, 2021
    Assignee: ABB Schweiz AG
    Inventor: Esa-Kai Paatero
  • Publication number: 20210234395
    Abstract: A power supply assembly including a load supply converter system and energy saving transfer route both connected electrically to a load connection. The energy saving transfer route bypasses the load supply converter system, and includes a bypass switch system having a first bypass switch and second bypass switch connected in series. A control system of the power supply assembly is adapted to provide a system diagnostic operation including providing a diagnostic state for the bypass switch system by controlling the first bypass switch into a non-conducting state, and controlling the second bypass switch into a conducting in state, generating a diagnostic voltage in an output of the load supply converter system, and detecting a short circuit incident if an electric current flowing through the bypass switch system exceeds a predetermined short circuit threshold value.
    Type: Application
    Filed: January 25, 2021
    Publication date: July 29, 2021
    Inventor: Esa-Kai Paatero
  • Publication number: 20210119477
    Abstract: A converter assembly including a source connection system including a primary source connection, and a plurality of secondary source connections, a load connection system including a load connection, a secondary source bus bar system, a switch system including a plurality of switch units each connected electrically between a corresponding secondary source connection and the secondary source bus bar system, and at least one converter module including a DC link and a secondary source side converter. Each switch unit of the switch system includes a first switch and a second switch connected in parallel, wherein the first switch has a higher switching speed than the second switch, and the second switch has a lower conduction losses than the first switch.
    Type: Application
    Filed: October 19, 2020
    Publication date: April 22, 2021
    Inventor: Esa-Kai Paatero
  • Publication number: 20210111628
    Abstract: A converter assembly including a source connection system comprising a primary source connection, and at least one secondary source connection; a load connection system; a primary source converter including a primary rectifier connected electrically to the primary source connection, and having a boost topology, and a DC link connected electrically between the primary rectifier and the load connection system, the DC link including DC link capacitance; a secondary source converter, which is a direct-current converter having a boost topology, connected electrically between the at least one secondary source connection and the DC link; and a pre-charge converter adapted for pre-charging the DC link capacitance. The pre-charge converter includes a pre-charge direct-current converter having a step down topology.
    Type: Application
    Filed: October 9, 2020
    Publication date: April 15, 2021
    Inventors: Esa-Kai Paatero, Nicola Notari
  • Publication number: 20200142007
    Abstract: The present invention provides a method for detecting a ground fault in a battery of a uninterrupted power supply, the battery includes at least one string with multiple battery cells, the method including the steps of defining multiple individual battery blocks of battery cells along the at least one string, performing an reference impedance measurement for the multiple individual battery blocks at a first point of time, performing a verification impedance measurement for the multiple individual battery blocks at a second point of time, evaluating a change of measured impedance between the reference impedance and the verification impedance for the multiple individual battery blocks of the at least one string, and identifying a ground fault based on a correlated change of measured impedance of the multiple individual battery blocks along the at least one string.
    Type: Application
    Filed: January 7, 2020
    Publication date: May 7, 2020
    Inventors: Daniel Aggeler, Esa-Kai Paatero, Ivan Furlan, Nicola Notari, Yannick Maret
  • Patent number: 10615633
    Abstract: The present application contemplates a power installation including an uninterruptible power supply system and a user installation, wherein the user installation includes a load, at least one AC power source, at least one secondary power supply, at least one controllable hardware component, and a system Protective Earth, the uninterruptible power supply system includes—at least one uninterruptible power supply module, and a control device for controlling the uninterruptible power supply system based on at least one system parameter of the uninterruptible power supply system, wherein the at least one uninterruptible power supply system is connected between the at least one AC power source, the at least one secondary power supply, and the load, the power installation further includes at least one installation control assembly including an assembly controller, and at least one measurement device connected to the assembly controller, wherein the installation control assembly is galvanically referenced to system P
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: April 7, 2020
    Assignee: ABB Schweiz AG
    Inventors: Esa-Kai Paatero, Nicola Notari, Ivan Furlan
  • Publication number: 20190356159
    Abstract: The present application provides a rack-mounted UPS device for power supply of a load including multiple data processing devices, which can be inserted as load enclosures into a common UPS rack, the rack-mounted UPS device including at least one primary converter, which is connected between an AC source and a high voltage DC bus, whereby the primary converter is configured to operate in boost mode providing high voltage DC power output to the high voltage DC bus, at least one secondary converter, which is connected between a DC source and the high voltage DC bus, whereby the secondary converter is configured to operate in boost mode providing high voltage DC power output to the high voltage DC bus, at least one load supply converter, which is connected between the high voltage DC bus and an internal power distribution bus to provide at least one low level DC output voltage to the internal power distribution bus, whereby the at least one primary converter, the at least one secondary converter, and the at least
    Type: Application
    Filed: May 6, 2019
    Publication date: November 21, 2019
    Inventors: Antonio Coccia, Esa-Kai Paatero
  • Publication number: 20190267836
    Abstract: The present application includes an uninterruptable power supply device for connection of a 3-wire multiphase AC source to a 3-wire multiphase load, whereby the UPS device is provided for multiphase operation, including a converter part, which is connected to at least one power source and the load, and a 3-wire bypass, which interconnects the AC source to the load, whereby the bypass includes a bypass switch, which includes an independently controlled switching unit for each phase of the AC source, and the UPS device includes a control unit, which controls the converter part and the bypass switch, whereby the control unit controls the bypass switch to power one of the three phases of the load directly via the bypass by one phase of the AC source, and the control unit controls the converter part to power the remaining two phases of the load.
    Type: Application
    Filed: May 9, 2019
    Publication date: August 29, 2019
    Inventor: Esa-Kai Paatero
  • Patent number: 10236714
    Abstract: The present invention provides a method for controlling an uninterrupted power supply system comprising multiple converters and a control device, the multiple converters are connected in parallel between a power supply side and a load side of the uninterrupted power supply system, each converter is provided to be individually activated by the control device to provide power from the power supply side to the load side, comprising the steps of determining a system load level at the load side of the uninterruptable power supply system, determining a number of required active converters based on the system load level and a system efficiency depending on the number of active converters, and activating the number of required converters based on the above determination.
    Type: Grant
    Filed: April 28, 2016
    Date of Patent: March 19, 2019
    Assignee: ABB Schweiz AG
    Inventors: Arkadiusz Boratyn, Esa-Kai Paatero, Rafael Jacukowicz
  • Patent number: 10199859
    Abstract: An uninterruptable power supply system is disclosed with a precharge converter for connecting to a DC link of the uninterruptable power supply system to a DC power supply, whereby the DC link comprises a first and a second DC bus line, which are both coupled to a common reference point, whereby the common reference point can be an AC power supply neutral of the uninterruptable power supply system, comprising power connectors for connecting to the DC power supply, a first and second output connector for connecting to the first and the second DC bus line, respectively, a converter circuit for receiving DC power from the power connectors and providing DC power to the first and second output connector, and a control unit for controlling operation of the converter circuit.
    Type: Grant
    Filed: December 5, 2016
    Date of Patent: February 5, 2019
    Assignee: ABB Schweiz AG
    Inventors: Carl Ngai-Man Ho, Esa-Kai Paatero, Nicola Notari