Patents by Inventor Fabio Magini
Fabio Magini 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: 10411625Abstract: A method for determining a speed (nG) of a generator unit which has an electric machine (100) with a rotor winding (110) and a stator winding (120) and a rectifier (130) connected thereto, via which rectifier the electric machine (100) is connected to an electrical system (150) of a motor vehicle, the speed (nG) being determined depending on the plot of an excitation current (IE) flowing through the rotor winding (110) of the electric machine (100). In particular, the speed is determined from a known relationship between the speed, the frequency of the excitation current, the number of pole pairs and optionally the number of phases when there is an error that leads to a constant phase voltage being output.Type: GrantFiled: October 28, 2016Date of Patent: September 10, 2019Assignee: Robert Bosch GmbHInventors: Fabio Magini, Manuel Mueller, Michael Wohlfarth, Miriam Riederer
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Publication number: 20180331642Abstract: A method for determining a speed (nG) of a generator unit which has an electric machine (100) with a rotor winding (110) and a stator winding (120) and a rectifier (130) connected thereto, via which rectifier the electric machine (100) is connected to an electrical system (150) of a motor vehicle, the speed (nG) being determined depending on the plot of an excitation current (IE) flowing through the rotor winding (110) of the electric machine (100). In particular, the speed is determined from a known relationship between the speed, the frequency of the excitation current, the number of pole pairs and optionally the number of phases when there is an error that leads to a constant phase voltage being output.Type: ApplicationFiled: October 28, 2016Publication date: November 15, 2018Inventors: Fabio Magini, Manuel Mueller, Michael Wohlfarth, Miriam Riederer
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Patent number: 9608555Abstract: A method is described for activating a multiphase machine that has a link circuit equipped with a link circuit capacitor, phase windings, and one high-side switch and one low-side switch per phase. The switches associated with the individual phases have control signals applied to them by a control unit. The control unit provides, in successive activation cycles, pulse-shaped control signals for the switches, the pulse widths and pulse onsets of which are respectively varied within an activation cycle in such a way that the link circuit current is reduced.Type: GrantFiled: May 11, 2012Date of Patent: March 28, 2017Assignee: ROBERT BOSCH GMBHInventors: Fabio Magini, Paul Mehringer
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Patent number: 9395735Abstract: A control unit for an electric machine. The control unit has a processing unit and a power output stage connected to the processing unit. The power output stage is connected to outputs of the control unit for stator coils of a stator of the electric machine. The processing unit is designed to supply current to the power output stage for generating a stator field, in particular a rotating magnetic field. The control unit comprises an electrical energy store, in particular an intermediate circuit capacitor or accumulator, connected to the power output stage. The control unit includes an input for a control signal, for example a temperature signal. The processing unit is preferably designed to actuate the power output stage as a function of the temperature signal such that the energy store can be heated by a current application pattern generated by the power output stage.Type: GrantFiled: August 5, 2013Date of Patent: July 19, 2016Assignee: Robert Bosch GmbHInventors: Fabio Magini, Paul Mehringer
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Patent number: 9312802Abstract: A method is described for controlling a multiphase machine which is connected to a battery, the multiphase machine having a DC link which is provided with a DC link capacitor, phase windings, and a high side switch and a low side switch for each phase. The switches associated with the individual phases are controlled by a control unit in such a way that sinusoidal phase currents are predefined, at least one phase current is connected at any point in time in each control cycle, and a fixed, pulsed control pattern is present for each control cycle. The control widths of the actuating signals associated with the phases are constant in the pulsed control pattern. The control pulses associated with the individual phases are predefined in such a way that the DC link current which arises is minimized.Type: GrantFiled: July 6, 2012Date of Patent: April 12, 2016Assignee: ROBERT BOSCH GMBHInventors: Fabio Magini, Paul Mehringer, Julian Roesner
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Patent number: 9203337Abstract: A method for controlling a multiphase machine which is connected to a direct current voltage source. The machine has a DC link which is provided with a DC link capacitor, phase windings, and a high side switch and a low side switch for each phase. The switches associated with the individual phases are acted on by control signals from a control unit. For reducing the DC link current, the control unit provides block-shaped control signals for the switches associated with the individual phases in such a way that trapezoidal or pulsed phase currents are predefined, at least one phase current is connected at any point in time in each control cycle, and the value of the amplitude ratio of the predefined phase currents is selected in such a way that the connected phase currents correspond to the instantaneous current of the direct current voltage source.Type: GrantFiled: June 20, 2012Date of Patent: December 1, 2015Assignee: ROBERT BOSCH GMBHInventors: Fabio Magini, Paul Mehringer
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Patent number: 8975837Abstract: In a method for reducing the starting current of a multi-phase machine operated by block commutation, which includes a battery, one high side switch for each phase, a low side switch and a phase winding as well as a rotor, the high side switch assigned to one current phase or the low side switch assigned to one current phase is held in the closed state, and the low side switches or the high side switches assigned to the other current phases are alternately controlled.Type: GrantFiled: February 9, 2011Date of Patent: March 10, 2015Assignee: Robert Bosch GmbHInventors: Fabio Magini, Paul Mehringer, Julian Roesner
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Publication number: 20140353979Abstract: A method is described for operating a converter for a starter motor, in particular a belt-driven starter motor, of a vehicle, including the steps of detecting a temperature of the converter, and controlling a current supplied to the converter as a function of the detected temperature using a setpoint temperature as a reference variable. In addition, the invention describes a converter for a starter motor of a vehicle which is capable of carrying out the method according to the invention.Type: ApplicationFiled: September 19, 2012Publication date: December 4, 2014Inventors: Fabio Magini, Paul Mehringer, Markus Baur
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Publication number: 20140232305Abstract: A method is described for controlling a multiphase machine which is connected to a battery, the multiphase machine having a DC link which is provided with a DC link capacitor, phase windings, and a high side switch and a low side switch for each phase. The switches associated with the individual phases are controlled by a control unit in such a way that sinusoidal phase currents are predefined, at least one phase current is connected at any point in time in each control cycle, and a fixed, pulsed control pattern is present for each control cycle. The control widths of the actuating signals associated with the phases are constant in the pulsed control pattern. The control pulses associated with the individual phases are predefined in such a way that the DC link current which arises is minimized.Type: ApplicationFiled: July 6, 2012Publication date: August 21, 2014Applicant: Robert Bosch GMBHInventors: Fabio Magini, Paul Mehringer, Julian Roesner
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Publication number: 20140217948Abstract: A method for controlling a multiphase machine which is connected to a direct current voltage source. The machine has a DC link which is provided with a DC link capacitor, phase windings, and a high side switch and a low side switch for each phase. The switches associated with the individual phases are acted on by control signals from a control unit. For reducing the DC link current, the control unit provides block-shaped control signals for the switches associated with the individual phases in such a way that trapezoidal or pulsed phase currents are predefined, at least one phase current is connected at any point in time in each control cycle, and the value of the amplitude ratio of the predefined phase currents is selected in such a way that the connected phase currents correspond to the instantaneous current of the direct current voltage source.Type: ApplicationFiled: June 20, 2012Publication date: August 7, 2014Inventors: Fabio Magini, Paul Mehringer
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Publication number: 20140191698Abstract: A method is described for activating a multiphase machine that has a link circuit equipped with a link circuit capacitor, phase windings, and one high-side switch and one low-side switch per phase. The switches associated with the individual phases have control signals applied to them by a control unit. The control unit provides, in successive activation cycles, pulse-shaped control signals for the switches, the pulse widths and pulse onsets of which are respectively varied within an activation cycle in such a way that the link circuit current is reduced.Type: ApplicationFiled: May 11, 2012Publication date: July 10, 2014Inventors: Fabio Magini, Paul Mehringer
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Publication number: 20140039705Abstract: A control unit for an electric machine. The control unit has a processing unit and a power output stage connected to the processing unit. The power output stage is connected to outputs of the control unit for stator coils of a stator of the electric machine. The processing unit is designed to supply current to the power output stage for generating a stator field, in particular a rotating magnetic field. The control unit comprises an electrical energy store, in particular an intermediate circuit capacitor or accumulator, connected to the power output stage. The control unit includes an input for a control signal, for example a temperature signal. The processing unit is preferably designed to actuate the power output stage as a function of the temperature signal such that the energy store can be heated by a current application pattern generated by the power output stage.Type: ApplicationFiled: August 5, 2013Publication date: February 6, 2014Inventors: Fabio Magini, Paul Mehringer
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Publication number: 20130038252Abstract: In a method for reducing the starting current of a multi-phase machine operated by block commutation, which includes a battery, one high side switch for each phase, a low side switch and a phase winding as well as a rotor, the high side switch assigned to one current phase or the low side switch assigned to one current phase is held in the closed state, and the low side switches or the high side switches assigned to the other current phases are alternately controlled.Type: ApplicationFiled: February 9, 2011Publication date: February 14, 2013Inventors: Fabio Magini, Paul Mehringer, Julian Roesner
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Publication number: 20120281446Abstract: In a method for reducing load dump overvoltages during operation of a synchronous rectifier for a polyphase alternating current having a number of inputs which correspond to the number of alternating current phases of the alternating current, and having at least two outputs for providing a direct current, an alternating current phase is connected to each of the inputs, and each of the inputs are electrically optionally connected via active switching elements to either the first or the second output in accordance with a control unit.Type: ApplicationFiled: November 17, 2010Publication date: November 8, 2012Inventors: Fabio Magini, Paul Mehringer, Alexander Shendi, Andeas Windmueller, Ralf Herbig