Patents by Inventor Arash Hassanpour Isfahani
Arash Hassanpour Isfahani 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: 11646618Abstract: A multi-phase electric machine may include a stator, and a rotor for rotating within the stator, the rotor including poles having combination magnet pieces with varying strengths and dimensions creating a non-sinusoidal back EMF. In one aspect, a multi-phase electric machine may include a stator, and a rotor for spinning within the stator, the rotor includes a plurality of poles having magnet assemblies includes at least a low strength magnet and a high strength magnet therein for creating a non-sinusoidal back EMF. In other aspects, a multi-phase electric machine of the present disclosure includes a stator, and a rotor for spinning within the stator, the rotor including a plurality of poles having magnet assemblies includes at least a first magnet and second magnet therein for creating a non-sinusoidal back EMF wherein a strength ratio of the first magnet and second magnet greater than the absolute value of 1.Type: GrantFiled: October 30, 2019Date of Patent: May 9, 2023Assignee: Optiphase Drive Systems, Inc.Inventors: Siavash Sadeghi, Arash Hassanpour Isfahani
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Publication number: 20200136485Abstract: A multi-phase electric machine may include a stator, and a rotor for rotating within the stator, the rotor including poles having combination magnet pieces with varying strengths and dimensions creating a non-sinusoidal back EMF. In one aspect, a multi-phase electric machine may include a stator, and a rotor for spinning within the stator, the rotor includes a plurality of poles having magnet assemblies includes at least a low strength magnet and a high strength magnet therein for creating a non-sinusoidal back EMF. In other aspects, a multi-phase electric machine of the present disclosure includes a stator, and a rotor for spinning within the stator, the rotor including a plurality of poles having magnet assemblies includes at least a first magnet and second magnet therein for creating a non-sinusoidal back EMF wherein a strength ratio of the first magnet and second magnet greater than the absolute value of 1.Type: ApplicationFiled: October 30, 2019Publication date: April 30, 2020Applicant: Optiphase Drive Systems, Inc.Inventors: Siavash Sadeghi, Arash Hassanpour Isfahani
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Patent number: 9728361Abstract: A piezoelectric multiplexer includes an actuator and multiple piezo-morph beams. The actuator includes an actuator conducting head and an actuator stem, and each piezo-morph beam includes a conducting beam contact head and a beam stem manufactured out of piezo-morph material. A control voltage is selectively applied to electrical contacts coupled to the beam stems to create a piezoelectric effect that bends the selected piezo-morph beam and creates an electrical connection between its contact head and the conducting head of the actuator. A control circuit with a controller signals which piezo-morph beam to connect to the actuator. This multi-piezo-morph-beam piezoelectric multiplexer can be affixed to the electrical terminals of different electrical components (e.g., a transistor) to create an electrical cell that can be manufactured on a semiconductor chip or in a microelectromechanical system (MEMS) device.Type: GrantFiled: December 17, 2015Date of Patent: August 8, 2017Assignee: 19th Space ElectronicsInventors: Lizon Maharjan, Babak Fahimi, Daniel Christopher Dial, Joseph Hearron, Job Timothy Brunet, Carlos Caicedo-Narvaez, Arash Hassanpour Isfahani
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Patent number: 9680402Abstract: A control circuit for an induction motor operates to determine whether the inductor motor is of the three-phase type or single-phase type. If three-phase, a variable frequency drive operation is implemented. If single-phase, a closed loop current control process is implemented. The closed loop current control process includes an operation by the control circuit to measure winding resistances and determine a turns ratio for the main and auxiliary motor windings. The turns ratio is used in the closed loop current control process to scale a measurement of current in the auxiliary winding for the purpose of generating the control voltage for the auxiliary winding. Phase of the current in the windings is further processed to generate a phase control signal.Type: GrantFiled: October 26, 2015Date of Patent: June 13, 2017Assignee: Everette Energy, LLCInventor: Arash Hassanpour Isfahani
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Publication number: 20170117826Abstract: A control circuit for an induction motor operates to determine whether the inductor motor is of the three-phase type or single-phase type. If three-phase, a variable frequency drive operation is implemented. If single-phase, a closed loop current control process is implemented. The closed loop current control process includes an operation by the control circuit to measure winding resistances and determine a turns ratio for the main and auxiliary motor windings. The turns ratio is used in the closed loop current control process to scale a measurement of current in the auxiliary winding for the purpose of generating the control voltage for the auxiliary winding. Phase of the current in the windings is further processed to generate a phase control signal.Type: ApplicationFiled: October 26, 2015Publication date: April 27, 2017Applicant: Everette Energy, LLCInventor: Arash Hassanpour Isfahani
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Publication number: 20160293829Abstract: A piezoelectric switching element includes an actuator and multiple piezoelectric-morphing beams. The actuator includes a conducting head and an actuator stem, and each piezoelectric-morphing beam includes a beam contact head of conductive material and a beam stem manufactured out of bimorph material. A control voltage is selectively applied to electrical contacts coupled to the beam stems to create a piezoelectric effect that axially stretches the selected piezoelectric-morphing beam to push the beam contact head along a single axis of movement toward the actuator conducting head to create an electrical connection between the contact head and the conducting head. A controller signals which piezoelectric-morphing beam to connect to the actuator. This multi-piezoelectric switching element can be affixed to the electrical terminals of different electrical components (e.g.Type: ApplicationFiled: April 1, 2015Publication date: October 6, 2016Applicant: 19TH SPACE ELECTRONICSInventors: Lizon Maharjan, Joseph Hearron, Job Timothy Brunet, Arash Hassanpour Isfahani, Carlos Caicedo-Narvaez
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Publication number: 20160104593Abstract: A piezoelectric multiplexer includes an actuator and multiple piezo-morph beams. The actuator includes an actuator conducting head and an actuator stem, and each piezo-morph beam includes a conducting beam contact head and a beam stem manufactured out of piezo-morph material. A control voltage is selectively applied to electrical contacts coupled to the beam stems to create a piezoelectric effect that bends the selected piezo-morph beam and creates an electrical connection between its contact head and the conducting head of the actuator. A control circuit with a controller signals which piezo-morph beam to connect to the actuator. This multi-piezo-morph-beam piezoelectric multiplexer can be affixed to the electrical terminals of different electrical components (e.g., a transistor) to create an electrical cell that can be manufactured on a semiconductor chip or in a microelectromechanical system (MEMS) device.Type: ApplicationFiled: December 17, 2015Publication date: April 14, 2016Applicant: 19th Space ElectronicsInventors: Lizon Maharjan, Babak Fahimi, Daniel Christopher Dial, Joseph Hearron, Job Timothy Brunet, Carlos Caicedo-Narvaez, Arash Hassanpour Isfahani
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Patent number: 9245704Abstract: A piezoelectric multiplexer includes an actuator and multiple piezo-morph beams. The actuator includes an actuator conducting head and an actuator stem, and each piezo-morph beam includes a conducting beam contact head and a beam stem manufactured out of piezo-morph material. A control voltage is selectively applied to electrical contacts coupled to the beam stems to create a piezoelectric effect that bends the selected piezo-morph beam and creates an electrical connection between its contact head and the conducting head of the actuator. A control circuit with a controller signals which piezo-morph beam to connect to the actuator. This multi-piezo-morph-beam piezoelectric multiplexer can be affixed to the electrical terminals of different electrical components (e.g., a transistor) to create an electrical cell that can be manufactured on a semiconductor chip or in a microelectromechanical system (MEMS) device.Type: GrantFiled: October 13, 2014Date of Patent: January 26, 2016Assignee: 19th Space ElectronicsInventors: Lizon Maharjan, Babak Fahimi, Daniel Christopher Dial, Joseph Hearron, Job Timothy Brunet, Arash Hassanpour Isfahani, Carlos Caicedo-Narvaez
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Publication number: 20150097635Abstract: A piezoelectric multiplexer includes an actuator and multiple piezo-morph beams. The actuator includes an actuator conducting head and an actuator stem, and each piezo-morph beam includes a conducting beam contact head and a beam stem manufactured out of piezo-morph material. A control voltage is selectively applied to electrical contacts coupled to the beam stems to create a piezoelectric effect that bends the selected piezo-morph beam and creates an electrical connection between its contact head and the conducting head of the actuator. A control circuit with a controller signals which piezo-morph beam to connect to the actuator. This multi-piezo-morph-beam piezoelectric multiplexer can be affixed to the electrical terminals of different electrical components (e.g., a transistor) to create an electrical cell that can be manufactured on a semiconductor chip or in a microelectromechanical system (MEMS) device.Type: ApplicationFiled: October 13, 2014Publication date: April 9, 2015Applicant: 19TH SPACE ELECTRONICSInventors: Lizon Maharjan, Babak Fahimi, Daniel Christopher Dial, Joseph Hearron, Job Timothy Brunet, Arash Hassanpour Isfahani, Carlos Caicedo-Narvaez