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1.发明公开公开(公告)号：US20240243682A1
公开(公告)日：2024-07-18
申请号：US18153386
申请日：2023-01-12
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Dylan M. Day , Matthew From , Young J. Kim , Daniel J. Berry
Abstract: An electric drive system includes a direct current (DC) power supply, a rotary electric machine connectable to a load, a power inverter module (PIM), and a controller. The PIM includes a bulk capacitor connected to the DC power supply, along with a plurality of power switches. Each power switch has an output side connected to the electric machine and an input side connected to the bulk capacitor. The controller executes a method to estimate an internal temperature of the bulk capacitor as an estimated internal temperature. This occurs in response to an enabling condition. The controller then selectively derates the electric machine in response to the estimated internal temperature.
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公开(公告)号：US20240162835A1
公开(公告)日：2024-05-16
申请号：US17984605
申请日：2022-11-10
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Daniel J. Berry , Young J. Kim , Dylan M. Day
Abstract: A system includes a battery configured for providing electrical energy in direct current and a drive unit configured for utilizing electrical energy in alternating current to provide an output torque. The system includes a power inverter configured for receiving the electrical energy in direct current, transforming the electrical energy to alternating current, and providing the electrical energy in alternating current to the drive unit. The power inverter includes a direct current bus bar. The system includes a computerized controller. The controller monitors an environmental temperature of the inverter and monitors a current flow of the electrical energy received by the inverter. The controller determines an estimated temperature of the bus bar based upon the environmental temperature and the current flow and determining an inverter percent available capability based upon the estimated temperature. The controller compares the capability to a threshold value and controls the drive unit based upon the comparing.
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公开(公告)号：US10162680B2
公开(公告)日：2018-12-25
申请号：US15376730
申请日：2016-12-13
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Young Joo Lee , Daniel J. Berry , Brian A. Welchko
Abstract: A method of exchanging data in a real-time operating system, between a primary core and a secondary core in a multi-core processor, includes executing a primary path via the primary core and executing a secondary path via the secondary core. The primary path is configured to be a relatively faster processing task and the secondary path is configured to be a relatively slower processing task. The method includes devising a freeze in process flag to have a respective flag status set and cleared by the primary path. The method includes devising a data frozen flag to have a respective flag status set and cleared by both the primary and the secondary paths. A component that is operatively connected to the multi-core processor may be controlled based at least partially on a difference between primary and secondary sets of calculations executed by the primary and secondary cores, respectively.
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公开(公告)号：US12237791B2
公开(公告)日：2025-02-25
申请号：US18182640
申请日：2023-03-13
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Brent S. Gagas , Kerrie M. Spaven , Brian J. Gallert , Daniel J. Berry , Brian A. Welchko
Abstract: A method, apparatus, and control system are described for operating a multiphase motor drive system including a rotary electric machine and an inverter. An AC choke filter is arranged proximal to output leads from the inverter. A reference temperature associated with the AC choke filter is determined along with an operating point of the electric machine. Operation of the inverter is controlled based upon a temperature of the AC choke filter, the reference temperature, and an operating point of the electric machine. This includes modifying a switching frequency and a PWM type in a manner that reduces the AC choke filter temperature by reducing the occurrence of switching events to protect the AC choke filter based on temperature feedback.
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公开(公告)号：US11387757B2
公开(公告)日：2022-07-12
申请号：US16559742
申请日：2019-09-04
Inventor： Daniel J. Berry , Anno Yoo , Seung Ki Sul , Hyun-Sam Jung
Abstract: A method for estimating a magnet temperature of a rotor magnet within a rotary electric machine includes, while a rotor of the electric machine is stationary, injecting a high-frequency voltage component onto a control voltage of the electric machine, via a controller, to generate an adjusted voltage command, and extracting a high-frequency component of a resulting current as an extracted high-frequency component. The method also includes calculating an inductance value of the electric machine using the extracted high-frequency component of the resulting current. The magnet temperature is estimated using the calculated inductance value and an angular position of the rotor. The method includes controlling an operation of the electric machine using the estimated magnet temperature. An electric powertrain uses the electric machine and controller noted above.
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Patent Agency Ranking
公开(公告)号：US20220097531A1
公开(公告)日：2022-03-31
申请号：US17034445
申请日：2020-09-28
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Min-Joong Kim , Debanjan Deep , Jinming Liu , Anno Yoo , Daniel J. Berry
Abstract: A vehicle is described that includes a multi-mode powertrain system having a first drive unit and a second drive unit. A controller is arranged to monitor the high-voltage DC power bus and is in communication with and operatively connected to first and second inverters. The controller is able to detect operation of one of the first inverter or the second inverter in an uncontrolled generating (UCG) mode, determine a driveline torque associated with the operating of the one of the first inverter or the second inverter in the UCG mode, and determine a compensating torque that is needed to counteract the driveline torque associated with the operating of the one of the first inverter or the second inverter in the UCG mode. The controller can further operate to detect a fault that may induce unintended lateral motion (ULM), and control torque outputs of the inverters based thereon.
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公开(公告)号：US20210010832A1
公开(公告)日：2021-01-14
申请号：US16506387
申请日：2019-07-09
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Young Joo Lee , Anno Yoo , Milan A. Vadera , Daniel J. Berry
Abstract: A resolver disposed to monitor a rotatable member is described, along with an associated method for evaluating an output signal therefrom. The method for monitoring the resolver includes supplying an excitation signal to the resolver, and monitoring, at an oversampling rate, first and second output signals from the resolver. An oversampling routine is executed to determine averages of the first and second output signals from the resolver. A demodulation angle error is determined based upon the first and second output signals from the resolver, and provided as feedback. A position of the resolver is also determined based upon the first and second output signals from the resolver.
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8.发明授权公开(公告)号：US10340819B2
公开(公告)日：2019-07-02
申请号：US15142416
申请日：2016-04-29
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Daniel J. Berry , Wei D. Wang , Bon Ho Bae , Brian A. Welchko , Wesley G. Zanardelli , Melissa R. McNeely
Abstract: A torque system includes a DC power device, a polyphase electric machine, a contactor pair, a power inverter module (PIM), and a controller. The PIM connects to the power device via the contactor pair and directly connects to the electric machine. The controller executes a method to control a fault response under a fault condition resulting in opening of the contactor pair and a polyphase short condition. The controller calculates a back EMF of the electric machine and transmits switching control signals to semiconductor switches of the PIM to transition from the polyphase short condition to a polyphase open condition only when the calculated back EMF is less than a calibrated value and a voltage rise on a DC side of the PIM is less than a calibrated voltage rise. A vehicle includes the DC power device, road wheels, electric machine, PIM, and controller.
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公开(公告)号：US09846002B2
公开(公告)日：2017-12-19
申请号：US14574469
申请日：2014-12-18
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Daniel J. Berry
CPC classification number: F28F27/00 , F28D15/00 , G01K13/02 , G01K2013/026 , H02K9/19 , H02K9/24 , H02K11/25
Abstract: A method for dynamically monitoring temperature of a fluid at a heat generating device includes monitoring, using a temperature sensor, temperature of the fluid held in a fluidic sump. A first fluidic flow rate and a second fluidic flow rate are determined. A third fluidic flow rate and a temperature drop of the fluid across the heat exchanger in the active coolant circuit are determined based upon the temperature of the fluid and the third fluidic flow rate through the active coolant circuit. A fluid temperature supplied to the electric machine through the active coolant circuit is determined based upon the third fluidic flow rate and the temperature drop of the fluid across the heat exchanger. An effective temperature of the fluid is determined based upon the temperature of the fluid in the sump and the temperature of the fluid supplied to the electric machine through the active coolant circuit.
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公开(公告)号：US11752878B2
公开(公告)日：2023-09-12
申请号：US17034445
申请日：2020-09-28
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Min-Joong Kim , Debanjan Deep , Jinming Liu , Anno Yoo , Daniel J. Berry
CPC classification number: B60L15/20 , B60K1/02 , B60K1/04 , B60L7/10 , B60L53/20 , B60R16/03 , G07C5/0808 , B60L1/003
Abstract: A vehicle is described that includes a multi-mode powertrain system having a first drive unit and a second drive unit. A controller is arranged to monitor the high-voltage DC power bus and is in communication with and operatively connected to first and second inverters. The controller is able to detect operation of one of the first inverter or the second inverter in an uncontrolled generating (UCG) mode, determine a driveline torque associated with the operating of the one of the first inverter or the second inverter in the UCG mode, and determine a compensating torque that is needed to counteract the driveline torque associated with the operating of the one of the first inverter or the second inverter in the UCG mode. The controller can further operate to detect a fault that may induce unintended lateral motion (ULM), and control torque outputs of the inverters based thereon.
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