Patents by Inventor Daniel Aggeler
Daniel Aggeler 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).
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Patent number: 11500033Abstract: 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: GrantFiled: January 7, 2020Date of Patent: November 15, 2022Assignee: ABB SCHWEIZ AGInventors: Daniel Aggeler, Esa-Kai Paatero, Ivan Furlan, Nicola Notari, Yannick Maret
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Publication number: 20200142007Abstract: 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: ApplicationFiled: January 7, 2020Publication date: May 7, 2020Inventors: Daniel Aggeler, Esa-Kai Paatero, Ivan Furlan, Nicola Notari, Yannick Maret
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Patent number: 9450442Abstract: A modular converter is disclosed for a battery charging station, having at least two charging modules connected in parallel. Each of the charging modules can be configured for generating an output current I1, I2, I3 for charging a battery. Each charging module can have a local controller for controlling the charging module. Each local controller of a charging module can be configured for determining a global charging current I and for determining the output current I1, I2, I3 of the charging module.Type: GrantFiled: August 5, 2014Date of Patent: September 20, 2016Assignee: ABB Technology AGInventors: Daniel Aggeler, Francisco Canales, Georgios Papafotiou, River-TinHo Li, Oscar Apeldoorn
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Patent number: 8912840Abstract: A switching device for switching a current between a first connection and a second connection including a series circuit of at least two JFETs (J1-Jn), with further JFETs (J2-Jn), which are connected in series to a lowest JFET (J1), and wherein a wiring network for stabilizing the gate voltages of the JFETs (J1-Jn) is connected between the second connection and the first termination. One additional circuit is connected between each gate connection (GJ2, GJ3 . . . GjN) of the further JFETs (J2-Jn) and associated cathode connections of diodes (DAV) of the wiring network. During switch-on and in the switched-on state, said additional circuit keeps the potential of the respective gate connection higher than the potential of the associated source connection.Type: GrantFiled: April 6, 2011Date of Patent: December 16, 2014Assignee: Eth Zurich, Eth TransferInventors: Daniel Aggeler, Jürgen Biela, Johann Walter Kolar
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Publication number: 20140340041Abstract: A modular converter is disclosed for a battery charging station, having at least two charging modules connected in parallel. Each of the charging modules can be configured for generating an output current I1, I2, I3 for charging a battery. Each charging module can have a local controller for controlling the charging module. Each local controller of a charging module can be configured for determining a global charging current I and for determining the output current I1, I2, I3 of the charging module.Type: ApplicationFiled: August 5, 2014Publication date: November 20, 2014Inventors: Daniel AGGELER, Francisco Canales, Georgios Papafotiou, RiverTinHo LI, Oscar Apeldoorn
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Patent number: 8760214Abstract: The invention relates to a switching device for switching a current between a first connection (1) and a second connection (2), comprising a series connection of at least two JFETs (J1-J6), of which a lowest JFET (J1) is connected to the first connection (1), or the lowest JFET (J1) is connected in a cascade circuit to the first connection (1) via a control switch (M), and at least one further JFET (J2-J5), which is connected in series to the lowest JFET (J1), wherein the JFET (J6) farthest away from the lowest JFET (J1) is referred to as the uppermost JFET (J6) and is connected with the drain connection to the second connection (2), and wherein a stabilization circuit (D11-D53) is connected between the gate connections of the JFETs (J1-J6) and the first connection (1) in order to stabilize the gate voltages of the JFETs (J1-J6).Type: GrantFiled: February 3, 2010Date of Patent: June 24, 2014Assignee: ETH ZurichInventors: Jürgen Biela, Johann W. Kolar, Daniel Aggeler
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Patent number: 8723589Abstract: A switching device for switching a current between a first terminal (1) and a second terminal (2) comprises a cascode circuit having a series connection of a first semiconductor switch (M) and a second semiconductor switch (J), wherein the two semiconductor switches (M, J) are connected to each other by a common point (13), and the first semiconductor switch (M) is controlled by way of a first control input in accordance with a voltage between the first control input and the first terminal (1), and the second semiconductor switch (J) is controlled by way of a second control input (4) in accordance with a voltage between the second control input (4) and the common point (13). To this end, a control circuit having a specifiable capacitance (C) is connected between the second terminal (2) and at least one of the control input.Type: GrantFiled: March 22, 2010Date of Patent: May 13, 2014Assignee: ETH ZurichInventors: Jürgen Biela, Johann W. Kolar, Daniel Aggeler
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Publication number: 20130057332Abstract: A switching device for switching a current between a first connection and a second connection including a series circuit of at least two JFETs (J1-Jn), with further JFETs (J2-Jn), which are connected in series to a lowest JFET (J1), and wherein a wiring network for stabilizing the gate voltages of the JFETs (J1-Jn) is connected between the second connection and the first termination. One additional circuit is connected between each gate connection (GJ2, GJ3 . . . GjN) of the further JFETs (J2-Jn) and associated cathode connections of diodes (DAV) of the wiring network. During switch-on and in the switched-on state, said additional circuit keeps the potential of the respective gate connection higher than the potential of the associated source connection.Type: ApplicationFiled: April 6, 2011Publication date: March 7, 2013Applicant: ETH ZURICHInventors: Daniel Aggeler, Jürgen Biela, Johann Walter Kolar
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Publication number: 20120105131Abstract: A switching device for switching a current between a first terminal (1) and a second terminal (2) comprises a cascode circuit having a series connection of a first semiconductor switch (M) and a second semiconductor switch (J), wherein the two semiconductor switches (M, J) are connected to each other by a common point (13), and the first semiconductor switch (M) is controlled by way of a first control input in accordance with a voltage between the first control input and the first terminal (1), and the second semiconductor switch (J) is controlled by way of a second control input (4) in accordance with a voltage between the second control input (4) and the common point (13). To this end, a control circuit having a specifiable capacitance (C) is connected between the second terminal (2) and at least one of the control input.Type: ApplicationFiled: March 22, 2010Publication date: May 3, 2012Applicant: ETH ZürichInventors: Jürgen Biela, Johann W. Kolar, Daniel Aggeler
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Publication number: 20110291738Abstract: The invention relates to a switching device for switching a current between a first connection (1) and a second connection (2), comprising a series connection of at least two JFETs (J1-J6), of which a lowest JFET (J1) is connected to the first connection (1), or the lowest JFET (J1) is connected in a cascade circuit to the first connection (1) via a control switch (M), and at least one further JFET (J2-J5), which is connected in series to the lowest JFET (J1), wherein the JFET (J6) farthest away from the lowest JFET (J1) is referred to as the uppermost JFET (J6) and is connected with the drain connection to the second connection (2), and wherein a stabilization circuit (D11-D53) is connected between the gate connections of the JFETs (J1-J6) and the first connection (1) in order to stabilize the gate voltages of the JFETs (J1-J6).Type: ApplicationFiled: February 3, 2010Publication date: December 1, 2011Applicant: ETH ZURICHInventors: Jürgen Biela, Johann W. Kolar, Daniel Aggeler