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公开(公告)号：US20230080123A1
公开(公告)日：2023-03-16
申请号：US17549324
申请日：2021-12-13
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Yusheng ZOU , Lei HAO , Chengwu DUAN , Jian YAO , Chandra S. NAMUDURI
Abstract: A power control system includes a battery system and a DC-DC converter with first, second, third, and fourth power switches. A second terminal of the first power switch is connected to a first terminal of the second power switch. A second terminal of the third power switch is connected to a first terminal of the fourth power switch. A first inductor includes a first terminal connected to the second terminal of the first power switch and the first terminal of the second power switch and a second terminal connected to the second terminal of the third power switch and the first terminal of the fourth power switch. A first bypass switch is connected in parallel to the first power switch. A second bypass switch is connected in parallel to the third power switch.
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公开(公告)号：US20210184610A1
公开(公告)日：2021-06-17
申请号：US16715102
申请日：2019-12-16
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Jiyu ZHANG , Siddharth BALLAL , Lei HAO , Wesley G. ZANARDELLI , Bojian CAO
Abstract: A diagnostic system includes: a current command module configured to, based on a motor torque request, a motor speed, a direct current (DC) bus voltage, generate a d-axis current command for an electric motor and a q-axis current command for the electric motor; a voltage command module configured to, based on the d-axis current command and the q-axis current command, generate a d-axis voltage command and a q-axis voltage command; a switching control module configured to control switching of an inverter module based on the d-axis voltage command and the q-axis voltage command, where the inverter module is configured to apply power to stator windings of the electric motor from the DC bus; and a fault module configured to selectively indicate that the stator windings of the electric motor are degraded when the d-axis voltage command is less than a predetermined nominal d-axis voltage of the electric motor.
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公开(公告)号：US20230268860A1
公开(公告)日：2023-08-24
申请号：US17676535
申请日：2022-02-21
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Lei HAO , Yue-Yun WANG , Steven E. MULDOON
Abstract: A motor drive system of a vehicle includes: an inverter that receives power from a power source via a bus, where the inverter is connected to a motor of the vehicle; a driver that drives the inverter; a filter that filters a current signal received from the bus to generate a filtered signal; and a control module that operates in an impedance determination mode. The impedance determination mode includes: based on the filtered signal, controlling the driver and the inverter to generate a pulsed signal applied to the power source; determining a current level and a voltage of the power source due to generation of the pulsed signal, and determining impedance based on the current level and the voltage. The control modules are configured to: determine a characterization parameter of the power source based on the impedance; and perform a control operation or a countermeasure based on the characterization parameter.
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公开(公告)号：US20230150378A1
公开(公告)日：2023-05-18
申请号：US17550004
申请日：2021-12-14
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Lei HAO , Chandra S. NAMUDURI , Chengwu DUAN , Suresh GOPALAKRISHNAN , Neeraj S. SHIDORE , Venkata Prasad ATLURI
CPC classification number: B60L53/20 , H02M3/158 , H02J7/0042 , H02J7/0013 , B60L53/16 , H02J2207/20 , B60L2210/10 , H02J2207/40
Abstract: A power control system for a vehicle includes a charge port and a contactor connected to the charge port and including a first plurality of switches. An energy storage system includes a second plurality of switches and one or more battery packs. A bi-directional DC-DC converter is connected between the energy storage system and a plurality of vehicle loads. A controller is configured to control states of the first and second plurality of switches to configure in a plurality of modes including a range improvement mode, a first charging mode to perform charging at a first voltage level, a second charging mode to perform charging at a second voltage level, a battery preconditioning mode; and an accessory load support mode.
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公开(公告)号：US20220286072A1
公开(公告)日：2022-09-08
申请号：US17191050
申请日：2021-03-03
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Suresh GOPALAKRISHNAN , Chandra S. NAMUDURI , Lei HAO , Muhammad H. ALVI , Alireza FATEMI
IPC: H02P21/22 , H02P27/08 , H02M7/5387
Abstract: A motor control system includes: a d-q target module configured to, based on a target torque of an electric motor, determine a first target d-axis current and a first target q-axis current; an offset module configured to, based on a capacitor current through capacitors connected across phases of the electric motor, determine a d-axis current offset and a q-axis current offset; an adder module configured to determine a second target d-axis current based on a sum of the first target d-axis current and the d-axis current offset and to determine a second target q-axis current based on a sum of the first target q-axis current and the q-axis current offset; and a driver module configured to, based on the second target d-axis current and the second target q-axis current, switch switches of a current source inverter (CSI) module configured to apply power to the phases of the electric motor.
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Patent Agency Ranking
公开(公告)号：US20210175835A1
公开(公告)日：2021-06-10
申请号：US16702877
申请日：2019-12-04
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Jiyu ZHANG , Siddharth BALLAL , Lei HAO , Wesley G. ZANARDELLI , Bojian CAO , Mutasim SALMAN
IPC: H02P29/028 , H02P29/024 , B60W10/08
Abstract: An electric drive system of a vehicle comprises a motor, a position sensor, an inverter, sensors to sense current and voltage supplied to the motor, and a controller to control the motor by controlling the inverter based on data from the position sensor and the sensors and a torque command. The controller estimates a motor torque using a motor model, calculates the motor torque, and generates a first state of health for the electric drive system based on a difference between the estimated and calculated motor torques. The controller generates, in response to the first state of health being less than or equal to a first threshold, a second state of health for at least one of the position sensor, the sensors, and the motor, and determines whether one of the position sensor, the sensors, and the motor is faulty based on the first and second states of health.
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公开(公告)号：US20240250570A1
公开(公告)日：2024-07-25
申请号：US18312029
申请日：2023-05-04
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Lei HAO , Qigui WANG , John S. AGAPIOU , Thomas W. NEHL , Xiaohui DU
IPC: H02K3/02
CPC classification number: H02K3/02
Abstract: An electric motor includes a stator and a rotor rotatable relative to the stator and having an air gap between the rotor and the stator, wherein at least one of the stator and the rotor include a plurality of windings formed from ultra-conducting copper foil.
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公开(公告)号：US20230299695A1
公开(公告)日：2023-09-21
申请号：US17699261
申请日：2022-03-21
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Muhammad Hussain ALVI , Chandra S. NAMUDURI , Suresh GOPALAKRISHNAN , Chunhao J. LEE , Lei HAO , Yue-Yun WANG , Rashmi PRASAD
CPC classification number: H02P5/74 , H02J7/0063 , H02J7/0013 , H02P23/14
Abstract: A power control system comprises a battery system including N battery packs. A plurality of contactors selectively connects N battery packs of a battery system in a first configuration supplying a first voltage level, a second configuration supplying a second voltage level, and a disconnected configuration. M power inverters connect the battery system to M electric machines, respectively. A controller is configured to determine when to transition between the first configuration and the second configuration. The controller is configured to transition between the first configuration and the second configuration by causing one of a positive torque transient and a negative torque transient to be generated by at least one of the M electric machines, transitioning the battery system from one of the first configuration and the second configuration to the disconnected configuration, and transitioning from the disconnected configuration to the other one of the first configuration and the second configuration.
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公开(公告)号：US20210175826A1
公开(公告)日：2021-06-10
申请号：US16705534
申请日：2019-12-06
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Jiyu ZHANG , Lei HAO
Abstract: A control system for an electric motor includes a power input calculating module configured to calculate power input to the electric motor. A power output calculating module is configured to calculate power output by the electric motor. A power loss calculating module is configured to calculate power loss in the electric motor based on the power input and the power output. A fault module is configured to compare the power loss in the electric motor to one or more predetermined power loss thresholds and to selectively alter operation of the electric motor based on the comparison.
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公开(公告)号：US20210036643A1
公开(公告)日：2021-02-04
申请号：US16527846
申请日：2019-07-31
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Yue-Yun WANG , Lei HAO , Alireza FATEMI , Thomas W. NEHL , Chandra S. NAMUDURI
Abstract: A current command module is configured to, based on a direct current (DC) bus voltage for an electric motor of the vehicle, generate a d-axis current command for the electric motor and a q-axis current command for the electric motor. A voltage command module configured to generate voltage commands based on the d-axis current command and the q-axis current command. A battery switching control module is configured to: determine a voltage operating state of a battery based on the voltage commands; compare a battery parameter to at least one of a predetermined voltage parameter and a predetermined current parameter during a dwell time when a plurality of switches of the battery are open; and generate a switch control signal to transition at least one switch of the plurality of switches to cause the battery to operate in the voltage operating state based on the comparison.
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