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公开(公告)号：US20240190254A1
公开(公告)日：2024-06-13
申请号：US18491740
申请日：2023-10-20
Applicant: Hyundai Motor Company , Kia Corporation
Inventor： Seong Cheol Jeong , Joo Yeon Kim
IPC: B60L7/18 , B60L53/24 , B60L58/12 , H01M8/04029
CPC classification number: B60L7/18 , B60L53/24 , B60L58/12 , H01M8/04029 , B60L2240/545
Abstract: In an embodiment a regenerative braking control apparatus includes a fuel cell stack configured to provide energy to a driving motor of the vehicle, a cathode oxygen depletion (COD) heater configured to remove gas remaining in the fuel cell stack, a high voltage battery configured to supply power to the driving motor or to be charged by using power generated by the driving motor through regenerative braking and a processor configured to calculate a reference state-of-charge (SOC) based on an expected driving route, to calculate a limit power for the COD heater based on an operating state of a cooling device for cooling the COD heater when a SOC of the high voltage battery is greater than or equal to the reference SOC and to calculate consumable power of the COD heater based on the limit power of the COD heater.
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公开(公告)号：US20230131865A1
公开(公告)日：2023-04-27
申请号：US17960306
申请日：2022-10-05
Applicant: Hyundai Motor Company , Kia Corporation
Inventor： Min Su Kang , Joo Yeon Kim , Sung Do Kim , Chang Seok You
Abstract: Proposed is a method of diagnosing abnormality of sensorless control of a motor for an air compressor, the method including estimating a speed of a motor in real time when a motor starts determining whether or not a preset condition for activating a function of diagnosing abnormality of sensorless control is satisfied, from a slope of the estimated speed of the motor performing control for decreasing an amount of electric current to be applied to the motor, in a case where the preset condition is satisfied computing an amount of decrease in the slope of the estimated speed of the motor while the amount of the electric current is decreased; and determining whether or not the sensorless control fails, by comparing the amount of the decrease in the slope of the speed of the motor with a preset value for confirming diagnosis of the abnormality of the sensorless control.
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公开(公告)号：US20230071079A1
公开(公告)日：2023-03-09
申请号：US17743125
申请日：2022-05-12
Applicant: HYUNDAI MOTOR COMPANY , KIA CORPORATION
Inventor： Sung Do Kim , Joo Yeon Kim , Min Su Kang , Chang Seok You
IPC: H01M8/04303 , H01M8/04225 , H01M8/04228 , H01M8/04302 , H01M8/04313 , H01M8/04955
Abstract: Disclosed herein is a method of controlling start/stop of a parallel fuel cell system, which, when controlling stop of a parallel fuel cell system in which two or more fuel cell systems are connected in parallel, considers operating state information of each fuel cell system, such as a current speed value of an air compressor and an opening degree of an air-exhaust-side air pressure valve of a fuel cell stack. Accordingly, the method can calculate a delay time for performing fuel cell system stop control for the two or more fuel cell systems, and sequentially perform the fuel cell system stop control for the two or more fuel cell systems based on the calculated delay time. Therefore, it is possible to minimize output delay of each fuel cell system and to achieve deterioration prevention and efficiency improvement of the fuel cell stack by fuel cell system start/stop control.
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公开(公告)号：US20240313682A1
公开(公告)日：2024-09-19
申请号：US18369405
申请日：2023-09-18
Applicant: HYUNDAI MOTOR COMPANY , KIA CORPORATION
Inventor： Sung Do Kim , Joo Yeon Kim , Min Su Kang , Chang Seok You
CPC classification number: H02P21/26 , H02P21/18 , H02P21/22 , H02P27/085
Abstract: A motor driving apparatus includes a motor an inverter driving the motor based on a switching signal, and a controller. The controller determines a current position estimated value of the motor by applying a zero-voltage vector pulse to the switching signal when entering the driving control of the motor, determines whether the motor is in a stop state according to an amount of change in the current position estimated value, and performs a pulse width modulation control by adjusting a duty ratio of the switching signal when the motor is determined to be in the stop state.
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公开(公告)号：US11777118B2
公开(公告)日：2023-10-03
申请号：US17743125
申请日：2022-05-12
Applicant: HYUNDAI MOTOR COMPANY , KIA CORPORATION
Inventor： Sung Do Kim , Joo Yeon Kim , Min Su Kang , Chang Seok You
IPC: H01M8/04 , H01M8/04303 , H01M8/04225 , H01M8/04228 , H01M8/04313 , H01M8/04955 , H01M8/04302
CPC classification number: H01M8/04303 , H01M8/04225 , H01M8/04228 , H01M8/04302 , H01M8/04313 , H01M8/04955 , H01M2250/20
Abstract: Disclosed herein is a method of controlling start/stop of a parallel fuel cell system, which, when controlling stop of a parallel fuel cell system in which two or more fuel cell systems are connected in parallel, considers operating state information of each fuel cell system, such as a current speed value of an air compressor and an opening degree of an air-exhaust-side air pressure valve of a fuel cell stack. Accordingly, the method can calculate a delay time for performing fuel cell system stop control for the two or more fuel cell systems, and sequentially perform the fuel cell system stop control for the two or more fuel cell systems based on the calculated delay time. Therefore, it is possible to minimize output delay of each fuel cell system and to achieve deterioration prevention and efficiency improvement of the fuel cell stack by fuel cell system start/stop control.
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Patent Agency Ranking
公开(公告)号：US12095399B2
公开(公告)日：2024-09-17
申请号：US17972726
申请日：2022-10-25
Applicant: Hyundai Motor Company , Kia Corporation
Inventor： Min Su Kang , Joo Yeon Kim , Sung Do Kim , Chang Seok You
Abstract: A sensorless induction motor system and a control method thereof includes a motor including a stator including windings forming a plurality of phases and a rotor including a permanent magnet, and a controller configured to control operation of the motor by controlling a voltage applied to each phase of the stator, to set a stop waiting time predicted to be necessary for the rotor to stop when the motor is controlled to stop, to apply a pulse voltage to each phase of the stator a plurality of times after the stop waiting time, and to conclude that the rotor has stopped when a minimum deviation value of an induced current is equal to or greater than a reference value.
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公开(公告)号：US20240178419A1
公开(公告)日：2024-05-30
申请号：US18178102
申请日：2023-03-03
Applicant: Hyundai Motor Company , Kia Corporation
Inventor： Mi Ji Kim , Joo Yeon Kim , Seong Cheol Jeong , Jae Ok Ha
IPC: H01M8/04537 , H01M8/04858 , H01M16/00
CPC classification number: H01M8/04619 , H01M8/04626 , H01M8/0494 , H01M16/006 , H01M2250/20
Abstract: An embodiment method of controlling a fuel cell electric vehicle includes determining a required output power amount of a fuel cell stack from a total required output power amount of a battery and the fuel cell stack based on an output power distribution ratio of the fuel cell stack according to a current state of charge (SOC) value of the battery and controlling an operation of the fuel cell stack based on the required output power amount of the fuel cell stack.
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公开(公告)号：US12215683B2
公开(公告)日：2025-02-04
申请号：US17960306
申请日：2022-10-05
Applicant: Hyundai Motor Company , Kia Corporation
Inventor： Min Su Kang , Joo Yeon Kim , Sung Do Kim , Chang Seok You
Abstract: Proposed is a method of diagnosing abnormality of sensorless control of a motor for an air compressor, the method including estimating a speed of a motor in real time when a motor starts determining whether or not a preset condition for activating a function of diagnosing abnormality of sensorless control is satisfied, from a slope of the estimated speed of the motor performing control for decreasing an amount of electric current to be applied to the motor, in a case where the preset condition is satisfied computing an amount of decrease in the slope of the estimated speed of the motor while the amount of the electric current is decreased; and determining whether or not the sensorless control fails, by comparing the amount of the decrease in the slope of the speed of the motor with a preset value for confirming diagnosis of the abnormality of the sensorless control.
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公开(公告)号：US12184207B2
公开(公告)日：2024-12-31
申请号：US17980893
申请日：2022-11-04
Applicant: Hyundai Motor Company , Kia Corporation
Inventor： Sung Do Kim , Chang Seok You , Hyo Jeong Lee , Min Su Kang , Joo Yeon Kim
Abstract: A sensorless induction motor system includes a control unit which applies a plurality of sampling pulse voltages to phases of the stator, estimates the position of a rotor through a first rotor position vector having the greatest deviation in an induced current, compares an induced current deviation of a second rotor position vector having a second greatest deviation of deviation of the induced current with that of a first rotor position vector, and determines whether or not permanent magnets are demagnetized; and a method of controlling the sensorless induction motor system.
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公开(公告)号：US20230420705A1
公开(公告)日：2023-12-28
申请号：US17943991
申请日：2022-09-13
Applicant: HYUNDAI MOTOR COMPANY , KIA CORPORATION
Inventor： Joo Yeon Kim , Min Su Kang , Tae Young Kim , Sung Do Kim , Chang Seok You
IPC: H01M8/04111 , H01M8/04746
CPC classification number: H01M8/04111 , H01M8/04776 , H01M8/04753
Abstract: A system and a method of inspecting an air compressor for a fuel cell are proposed. The inspection system includes a fuel cell; an air compressor provided on an inlet side of a cathode of the fuel cell and provided with a motor; and a controller configured to calculate an estimated consumption current of the air-compressor motor through a relationship between an applied voltage and a rotation speed of the air-compressor motor and configured to compare the calculated estimated consumption current with a measured actual consumption current to determine whether a permanent magnet of the air-compressor motor is demagnetized.
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