Patents by Inventor Shakil Hossain
Shakil Hossain 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: 11671034Abstract: A motor control system shorts motor windings of a motor by using enhancement metal-oxide-semiconductor field-effect transistors (MOSFETs) so that the motor generates braking torque when all or some electric control units of the motor are disabled or failed. The motor control system comprises: a motor comprising a plurality of motor phase terminals; a plurality of electric control units electrically connected to the motor and configured to control the motor, wherein the electric control units configured to output control signals, respectively; a plurality of power sources, each of the power sources electrically connected to a respective one of the electric control units; and a shorting circuit connected between the power sources and the motor, the shorting circuit configured to selectively short the motor phase terminals in response to one or more of the control signals of the electric control units.Type: GrantFiled: August 4, 2021Date of Patent: June 6, 2023Assignee: HL MANDO CORPORATIONInventors: Shakil Hossain, Lucas Ritter, Awab Ali, Tomy Sebastian, Kade Hudson
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Patent number: 11626819Abstract: A motor control system shorts motor windings of a motor by using junction gate field-effect transistors (JFETs) controlled bipolar junction transistors (BJTs), solid state relays (SSRs) controlled BJTs, and depletion mode metal-oxide-semiconductor field-effect transistors (MOSFETs) so that the motor generates braking torque when all or some electric control units of the motor are disabled or failed. The motor control system comprises: a motor comprising a plurality of motor phase terminals; a plurality of electric control units electrically connected with the motor and configured to control the motor, wherein the electric control units are configured to output control signals, respectively; and a shorting circuit connected to between the motor and the electric control units, the shorting circuit configured to short the motor phase terminals in response to receiving none of the control signals from the electric control units.Type: GrantFiled: March 27, 2020Date of Patent: April 11, 2023Assignee: HL MANDO CORPORATIONInventors: Shakil Hossain, Lucas Ritter, Awab Ali, Tomy Sebastian, Kade Hudson
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Patent number: 11223304Abstract: A motor control system comprises: a motor comprising motor windings; and electric control units connected with the motor, each of the electric control units comprising an inverter. One of the electric control units comprises: a direct current (DC) bus; first switches, each of the first switches connected with a respective one of the motor windings; second switches, each of the second switches connected with the DC bus and a respective one of the motor windings; a first switch driver generating drive signals to drive the first and second switches; pull up resistors, each of the pull up resistors connected between the DC bus and a respective one of the second switches. The voltage pulled up by the pull up resistors can force the second switches to be turned on to short the motor windings in a state that the first switch driver does not generate the drive signals.Type: GrantFiled: March 30, 2020Date of Patent: January 11, 2022Assignee: MANDO CORPORATIONInventors: Shakil Hossain, Lucas Ritter, Awab Ali, Tomy Sebastian, Kade Hudson
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Publication number: 20210367538Abstract: A motor control system shorts motor windings of a motor by using enhancement metal-oxide-semiconductor field-effect transistors (MOSFETs) so that the motor generates braking torque when all or some electric control units of the motor are disabled or failed. The motor control system comprises: a motor comprising a plurality of motor phase terminals; a plurality of electric control units electrically connected to the motor and configured to control the motor, wherein the electric control units configured to output control signals, respectively; a plurality of power sources, each of the power sources electrically connected to a respective one of the electric control units; and a shorting circuit connected between the power sources and the motor, the shorting circuit configured to selectively short the motor phase terminals in response to one or more of the control signals of the electric control units.Type: ApplicationFiled: August 4, 2021Publication date: November 25, 2021Inventors: Shakil HOSSAIN, Lucas RITTER, Awab ALI, Tomy SEBASTIAN, Kade HUDSON
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Patent number: 11128241Abstract: A motor control system shorts motor windings of a motor by using enhancement metal-oxide-semiconductor field-effect transistors (MOSFETs) so that the motor generates braking torque when all or some electric control units of the motor are disabled or failed. The motor control system comprises: a motor comprising a plurality of motor phase terminals; a plurality of electric control units electrically connected to the motor and configured to control the motor, wherein the electric control units configured to output control signals, respectively; a plurality of power sources, each of the power sources electrically connected to a respective one of the electric control units; and a shorting circuit connected between the power sources and the motor, the shorting circuit configured to selectively short the motor phase terminals in response to one or more of the control signals of the electric control units.Type: GrantFiled: October 25, 2019Date of Patent: September 21, 2021Assignee: MANDO CORPORATIONInventors: Shakil Hossain, Lucas Ritter, Awab Ali, Tomy Sebastian, Kade Hudson
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Publication number: 20200321893Abstract: A motor control system comprises: a motor comprising motor windings; and electric control units connected with the motor, each of the electric control units comprising an inverter. One of the electric control units comprises: a direct current (DC) bus; first switches, each of the first switches connected with a respective one of the motor windings; second switches, each of the second switches connected with the DC bus and a respective one of the motor windings; a first switch driver generating drive signals to drive the first and second switches; pull up resistors, each of the pull up resistors connected between the DC bus and a respective one of the second switches. The voltage pulled up by the pull up resistors can force the second switches to be turned on to short the motor windings in a state that the first switch driver does not generate the drive signals.Type: ApplicationFiled: March 30, 2020Publication date: October 8, 2020Inventors: Shakil HOSSAIN, Lucas RITTER, Awab ALI, Tomy SEBASTIAN, Kade HUDSON
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Publication number: 20200321891Abstract: A motor control system shorts motor windings of a motor by using enhancement metal-oxide-semiconductor field-effect transistors (MOSFETs) so that the motor generates braking torque when all or some electric control units of the motor are disabled or failed. The motor control system comprises: a motor comprising a plurality of motor phase terminals; a plurality of electric control units electrically connected to the motor and configured to control the motor, wherein the electric control units configured to output control signals, respectively; a plurality of power sources, each of the power sources electrically connected to a respective one of the electric control units; and a shorting circuit connected between the power sources and the motor, the shorting circuit configured to selectively short the motor phase terminals in response to one or more of the control signals of the electric control units.Type: ApplicationFiled: October 25, 2019Publication date: October 8, 2020Inventors: Shakil HOSSAIN, Lucas RITTER, Awab ALI, Tomy SEBASTIAN, Kade HUDSON
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Publication number: 20200321892Abstract: A motor control system shorts motor windings of a motor by using junction gate field-effect transistors (JFETs) controlled bipolar junction transistors (BJTs), solid state relays (SSRs) controlled BJTs, and depletion mode metal-oxide-semiconductor field-effect transistors (MOSFETs) so that the motor generates braking torque when all or some electric control units of the motor are disabled or failed. The motor control system comprises: a motor comprising a plurality of motor phase terminals; a plurality of electric control units electrically connected with the motor and configured to control the motor, wherein the electric control units are configured to output control signals, respectively; and a shorting circuit connected to between the motor and the electric control units, the shorting circuit configured to short the motor phase terminals in response to receiving none of the control signals from the electric control units.Type: ApplicationFiled: March 27, 2020Publication date: October 8, 2020Inventors: Shakil HOSSAIN, Lucas Ritter, Awab Ali, Tomy Sebastian, Kade Huson
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Patent number: 9136785Abstract: A motor control system is provided. The motor control system includes a motor having plurality of motor harmonics, and a torque ripple compensation controller in communication with the motor. The torque ripple compensation controller is configured to determine a harmonic ripple current for a corresponding one of the plurality of motor harmonics. The harmonic ripple current is based on a reference q-axis current and a reference d-axis current. The torque ripple compensation controller is configured to add the harmonic ripple current for each of the plurality of motor harmonics together to determine the ripple compensating current.Type: GrantFiled: March 12, 2013Date of Patent: September 15, 2015Assignee: Steering Solutions IP Holding CorporationInventors: Abraham Gebregergis, Mohammad S. Islam, Tomy Sebastian, Mazharul H. Chowdhury, Shakil Hossain, Ramakrishnan RajaVenkitasubramony, Niharika P. Popy
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Patent number: 9054612Abstract: A motor control system is provided. The motor control system includes a motor having plurality of motor harmonics, and a torque ripple compensation controller in communication with the motor. The torque ripple compensation controller is configured to determine a harmonic ripple current for a corresponding one of the plurality of motor harmonics. The harmonic ripple current is based on a reference q-axis current and a reference d-axis current. The torque ripple compensation controller is configured to add the harmonic ripple current for each of the plurality of motor harmonics together to determine the ripple compensating current.Type: GrantFiled: March 12, 2013Date of Patent: June 9, 2015Assignee: Steering Solutions IP Holding CorporationInventors: Abraham Gebregergis, Mohammad S. Islam, Tomy Sebastian, Mazharul H. Chowdhury, Shakil Hossain, Ramakrishnan RajaVenkitasubramony, Niharika P. Popy
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Publication number: 20140265961Abstract: A motor control system is provided. The motor control system includes a motor having plurality of motor harmonics, and a torque ripple compensation controller in communication with the motor. The torque ripple compensation controller is configured to determine a harmonic ripple current for a corresponding one of the plurality of motor harmonics. The harmonic ripple current is based on a reference q-axis current and a reference d-axis current. The torque ripple compensation controller is configured to add the harmonic ripple current for each of the plurality of motor harmonics together to determine the ripple compensating current.Type: ApplicationFiled: March 12, 2013Publication date: September 18, 2014Applicant: Steering Solutions IP Holding CorporationInventors: Abraham Gebregergis, Mohammad S. Islam, Tomy Sebastian, Mazharul H. Chowdhury, Shakil Hossain, Ramakrishnan RajaVenkitasubramony, Niharika P. Popy