Patents by Inventor Gholamabas Esteghlal

Gholamabas Esteghlal 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: 11329565
    Abstract: The present invention provides regulation for an output voltage of a DC-DC voltage converter. The controlled variable provided to the regulator of the DC-DC voltage converter is in this case made up of a controlled variable from a voltage regulator and a further controlled variable from an initial controller. The controlled variable from the voltage regulator is in this case obtained directly from the comparison of the output voltage with a setpoint voltage. The controlled variable from the initial controller takes into consideration, inter alia, the input voltage of the DC-DC voltage converter, the value of the input DC voltage being able to be corrected such that the voltage regulator can be operated close to the zero point during steady-state operation. In this manner, faster and more precise regulation of the output voltage is obtained.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: May 10, 2022
    Assignee: Robert Bosch GmbH
    Inventor: Gholamabas Esteghlal
  • Patent number: 11081986
    Abstract: The invention relates to a method and device for determining the position angle of a rotor (2) in an electric synchronous machine (1). The device is designed to comprise: a voltage generator (12) for generating electrical voltage pulses at angles in a coordinate system fixed in respect of the stator when the rotor (2) is stationary; a measuring device (14) for measuring any electrical current value returning to the electrical voltage pulses generated by the voltage generator (12); and a computing device (16), which is designed: —to store a current signal curve of the current values measured; —to generate a zero-mean current signal curve by shifting the current signal curve or the measured current values; —to compute an integral function (83) of the zero-mean current signal curve; and—to determine the position angle of the rotor (2) on the basis of the computed integral function (83).
    Type: Grant
    Filed: April 25, 2018
    Date of Patent: August 3, 2021
    Assignee: Robert Bosch GmbH
    Inventors: Alexander Maass, Gholamabas Esteghlal
  • Publication number: 20210211057
    Abstract: The present invention provides regulation for an output voltage of a DC-DC voltage converter. The controlled variable provided to the regulator of the DC-DC voltage converter is in this case made up of a controlled variable from a voltage regulator and a further controlled variable from an initial controller. The controlled variable from the voltage regulator is in this case obtained directly from the comparison of the output voltage with a setpoint voltage. The controlled variable from the initial controller takes into consideration, inter alia, the input voltage of the DC-DC voltage converter, the value of the input DC voltage being able to be corrected such that the voltage regulator can be operated close to the zero point during steady-state operation. In this manner, faster and more precise regulation of the output voltage is obtained.
    Type: Application
    Filed: February 27, 2017
    Publication date: July 8, 2021
    Inventor: Gholamabas Esteghlal
  • Patent number: 10840729
    Abstract: The invention relates to a method for operating an electrical system (1) having a high-voltage section (2) and a low-voltage section (3) which are electrically connected to one another by means of a DC-DC converter (4), wherein the low-voltage section (3) has at least one rechargeable energy store (8) and at least one electrical consumer (9), wherein the DC-DC converter (4) is operated on the basis of an electrical load (P) acting on the low-voltage section (3). In order to determine the load (P), provision is made for all currents flowing through the DC-DC converter (4) to be recorded and added to one another.
    Type: Grant
    Filed: June 14, 2016
    Date of Patent: November 17, 2020
    Assignee: Robert Bosch GmbH
    Inventors: Frank Haefele, Gholamabas Esteghlal, Markus Kretschmer
  • Patent number: 10790745
    Abstract: The invention relates to a control system for a DC-to-DC converter. Variations in the input voltage of the DC-to-DC converter are compensated by an estimated value being calculated for the variations, and a control variable being determined for the DC-to-DC converter based on the estimated values of the input voltage. The estimated values for the input voltage can, for example, be determined on the basis of a polynomial, for example using a Lagrange expansion.
    Type: Grant
    Filed: October 2, 2017
    Date of Patent: September 29, 2020
    Assignee: Robert Bosch GmbH
    Inventor: Gholamabas Esteghlal
  • Patent number: 10707748
    Abstract: The invention relates to control of a DC converter having multiple parallel-connected DC converter modules. Here, a common variable for the voltage control is formed for the control of all the DC converter modules. In addition, a separate current controller is provided for each DC converter module. For each DC converter module, a control variable can be formed from the individually determined current control and the jointly determined voltage control.
    Type: Grant
    Filed: October 2, 2017
    Date of Patent: July 7, 2020
    Assignee: Robert Bosch GmbH
    Inventor: Gholamabas Esteghlal
  • Publication number: 20200186026
    Abstract: The invention relates to control of a DC converter having multiple parallel-connected DC converter modules. Here, a common variable for the voltage control is formed for the control of all the DC converter modules. In addition, a separate current controller is provided for each DC converter module. For each DC converter module, a control variable can be formed from the individually determined current control and the jointly determined voltage control.
    Type: Application
    Filed: October 2, 2017
    Publication date: June 11, 2020
    Inventor: Gholamabas Esteghlal
  • Patent number: 10615690
    Abstract: The present invention relates to the regulation of the output voltage of a DC-DC voltage converter. The controlled variable provided to the regulator of the DC-DC voltage converter is composed in this case of a controlled variable of a voltage regulator and a further controlled variable of a feed-forward control. The controlled variable of the voltage regulator is produced here directly from the comparison of the output voltage with a setpoint voltage. The controlled variable of the feed-forward control takes into consideration, inter alia, the input current of the DC-DC voltage converter, wherein the value of the input current can be corrected in such a way that the voltage regulator can be operated close to the zero point during stationary operation. A more rapid and more precise regulation of the output voltage is produced in this way.
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: April 7, 2020
    Assignee: Robert Bosch GmbH
    Inventor: Gholamabas Esteghlal
  • Publication number: 20200059175
    Abstract: The invention relates to a method and device for determining the position angle of a rotor (2) in an electric synchronous machine (1). The device is designed to comprise: a voltage generator (12) for generating electrical voltage pulses at angles in a coordinate system fixed in respect of the stator when the rotor (2) is stationary; a measuring device (14) for measuring any electrical current value returning to the electrical voltage pulses generated by the voltage generator (12); and a computing device (16), which is designed: —to store a current signal curve of the current values measured; —to generate a zero-mean current signal curve by shifting the current signal curve or the measured current values; —to compute an integral function (83) of the zero-mean current signal curve; and—to determine the position angle of the rotor (2) on the basis of the computed integral function (83).
    Type: Application
    Filed: April 25, 2018
    Publication date: February 20, 2020
    Inventors: Alexander Maass, Gholamabas Esteghlal
  • Publication number: 20190319537
    Abstract: The invention relates to a control system for a DC-to-DC converter. Variations in the input voltage of the DC-to-DC converter are compensated by means of an estimated value being calculated for the variations, and a control variable being determined for the DC-to-DC converter based on the estimated values of the input voltage. The estimated values for the input voltage can, for example, be determined on the basis of a polynomial, for example using a Lagrange expansion.
    Type: Application
    Filed: October 2, 2017
    Publication date: October 17, 2019
    Inventor: Gholamabas Esteghlal
  • Publication number: 20190181752
    Abstract: The present invention provides regulation for an output voltage of a DC-DC voltage converter. The controlled variable provided to the regulator of the DC-DC voltage converter is in this case made up of a controlled variable from a voltage regulator and a further controlled variable from an initial controller. The controlled variable from the voltage regulator is in this case obtained directly from the comparison of the output voltage with a setpoint voltage. The controlled variable from the initial controller takes into consideration, inter alia, the input current of the DC-DC voltage converter, the value of the input current being able to be corrected such that the voltage regulator can be operated close to the zero point during steady-state operation. In this manner, faster and more precise regulation of the output voltage is obtained.
    Type: Application
    Filed: August 10, 2017
    Publication date: June 13, 2019
    Inventor: Gholamabas Esteghlal
  • Patent number: 10215777
    Abstract: The invention relates to a method for operating an electric machine (2). The electric machine (2) is driven using field-oriented regulation, and a current relative position (?i) of a rotating field is detected by means of at least one sensor (5). At least one electric voltage (U?s, U?s) is generated which causes an electric rotor flux corresponding to the position (?i) detected by the sensor, the electric machine (2) is monitored for a torque generated by the voltage (U?s, U?s) and an absolute position of the rotating field is determined depending on the generated torque.
    Type: Grant
    Filed: April 23, 2015
    Date of Patent: February 26, 2019
    Assignee: Robert Bosch GmbH
    Inventor: Gholamabas Esteghlal
  • Patent number: 10205396
    Abstract: The invention relates to a method (300) for controlling a galvanically isolated DC converter (100). The DC converter (100) comprises a full bridge (110) for converting an input DC voltage (UinDC) into an input AC voltage (UinAC), a transformer (120) for converting the input AC voltage (UinAC) into an output AC voltage (UoutAC), and a rectifier (130) for converting the output AC voltage (UoutAC) into an output DC voltage (UoutDC). The method comprises the steps: determining (320) the duty cycle (D) of the full bridge (110); comparing (330) the determined duty cycle (D) with a duty cycle threshold value (Dth); calculating (340) an input DC voltage (UinDCcalc) according to an input current (I_in), the output DC voltage (UoutDC), a transformation ratio (U) of the transformer (120) and an adapted value (D_ad) of the duty cycle of the full bridge (110).
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: February 12, 2019
    Assignee: Robert Bosch GmbH
    Inventor: Gholamabas Esteghlal
  • Publication number: 20180367046
    Abstract: The invention relates to a method (300) for controlling a galvanically isolated DC converter (100). The DC converter (100) comprises a full bridge (110) for converting an input DC voltage (UinDC) into an input AC voltage (UinAC), a transformer (120) for converting the input AC voltage (UinAC) into an output AC voltage (UoutAC), and a rectifier (130) for converting the output AC voltage (UoutAC) into an output DC voltage (UoutDC). The method comprises the steps: determining (320) the duty cycle (D) of the full bridge (110); comparing (330) the determined duty cycle (D) with a duty cycle threshold value (Dth); calculating (340) an input DC voltage (UinDCcalc) according to an input current (I_in), the output DC voltage (UoutDC), a transformation ratio (U) of the transformer (120) and an adapted value (D_ad) of the duty cycle of the full bridge (110).
    Type: Application
    Filed: November 22, 2016
    Publication date: December 20, 2018
    Applicant: Robert Bosch GmbH
    Inventor: Gholamabas Esteghlal
  • Publication number: 20180212457
    Abstract: The invention relates to a method for operating an electrical system (1) having a high-voltage section (2) and a low-voltage section (3) which are electrically connected to one another by means of a DC-DC converter (4), wherein the low-voltage section (3) has at least one rechargeable energy store (8) and at least one electrical consumer (9), wherein the DC-DC converter (4) is operated on the basis of an electrical load (P) acting on the low-voltage section (3). In order to determine the load (P), provision is made for all currents flowing through the DC-DC converter (4) to be recorded and added to one another.
    Type: Application
    Filed: June 14, 2016
    Publication date: July 26, 2018
    Inventors: Frank Haefele, Gholamabas Esteghlal, Markus Kretschmer
  • Publication number: 20180210010
    Abstract: The invention relates to a method for operating an electric machine (2). The electric machine (2) is driven using field-oriented regulation, and a current relative position (?i) of a rotating field is detected by means of at least one sensor (5). At least one electric voltage (U?s, U?s) is generated which causes an electric rotor flux corresponding to the position (?i) detected by the sensor, the electric machine (2) is monitored for a torque generated by the voltage (U?s, U?s) and an absolute position of the rotating field is determined depending on the generated torque.
    Type: Application
    Filed: April 23, 2015
    Publication date: July 26, 2018
    Inventor: Gholamabas Esteghlal
  • Publication number: 20160315363
    Abstract: The invention relates to a device (710, 720, 730, 740) for monitoring an energy store (20; 30) comprising a plurality of battery cells (5001111-500klmn), which are arranged in a plurality of battery groups (2001-200k, 30011-300kl, 400111-400klm), and a temperature-control device for controlling the temperature of the battery cells (5001111-500klmn) by means of a plurality of partial flows of a temperature-control medium, each of the partial flows being associated with one of the battery groups (2001-200k, 30011-300kl, 400111-400klmn), characterized by: a plurality of sensor apparatuses (720) for sensing temperature measurement values of the battery cells (5001111-500klmn), each of the sensor apparatuses (720) being arranged in such a way that the sensor apparatus can sense the temperature measurement value of one of the battery cells (5001111-500klmn); an apparatus (710, 740) for determining a plurality of average temperature values from the sensed temperature measurement values, each of the determined averag
    Type: Application
    Filed: December 1, 2014
    Publication date: October 27, 2016
    Inventor: Gholamabas Esteghlal
  • Patent number: 9038438
    Abstract: A method is described for detecting the independent running and/or the start/stop of an internal combustion engine, in which parameters of the internal combustion engine characterizing the combustion process, especially pressure changes or vibrations, are evaluated for this detection.
    Type: Grant
    Filed: August 19, 2011
    Date of Patent: May 26, 2015
    Assignee: ROBERT BOSCH GMBH
    Inventors: Gholamabas Esteghlal, Rolf Stracke
  • Patent number: 8577584
    Abstract: A method for operating an internal combustion engine, in which a setpoint torque to be output by the internal combustion engine is restricted to a specifiable torque, in particular in response to an error in the control of the internal combustion engine. An engine speed of the internal combustion engine is determined as a function of at least one performance quantity of the internal combustion engine, and the specifiable torque is modified as a function of the determined engine speed.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: November 5, 2013
    Assignee: Robert Bosch GmbH
    Inventors: Robert Gwinner, Gholamabas Esteghlal
  • Publication number: 20120047997
    Abstract: A method is described for detecting the independent running and/or the start/stop of an internal combustion engine, in which parameters of the internal combustion engine characterizing the combustion process, especially pressure changes or vibrations, are evaluated for this detection.
    Type: Application
    Filed: August 19, 2011
    Publication date: March 1, 2012
    Inventors: Gholamabas ESTEGHLAL, Rolf Stracke