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公开(公告)号：US20240322736A1
公开(公告)日：2024-09-26
申请号：US18321057
申请日：2023-05-22
Applicant: Hamilton Sundstrand Corporation
Inventor： Anil Prasad Josyula , Ashish Vijay , Sangameswaran Kamanathan
Abstract: A motor temperature control system for an electric aircraft is provided. The motor temperature control system includes an electric motor, circuitry and a thermoelectric generator (TEG). The TEG is disposed in thermal communication with the electric motor. The TEG is electrically coupled to the circuitry such that heat generated by the electric motor is converted by the TEG to electrical energy that generates a voltage drop across the circuitry.
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公开(公告)号：US20240310710A1
公开(公告)日：2024-09-19
申请号：US18675571
申请日：2024-05-28
Inventor： Yusaku Nishikawa , Shigekazu Yamagishi
CPC classification number: G03B21/206 , G03B21/16 , G03B33/08 , H02P29/60
Abstract: A control device according to the present disclosure is a control device for controlling a rotational speed of a phosphor wheel. The device includes an atmospheric pressure sensor that acquires atmospheric pressure information indicating an atmospheric pressure around the phosphor wheel, and a controller that controls the rotational speed of the phosphor wheel based on the atmospheric pressure information.
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公开(公告)号：US11971314B2
公开(公告)日：2024-04-30
申请号：US17422846
申请日：2019-11-04
Applicant: Schaeffler Technologies AG & Co. KG
Inventor： Jochen Reith , Tom Huck , Jiufang Peng
CPC classification number: G01K7/427 , G01K13/08 , H02P29/60 , G01K2205/00
Abstract: A method calculates temperatures in an electric drive unit. A first temperature detection region has a first temperature and a second temperature detection region has a second temperature. The first temperature is influenced by a first coupling value which is non-linearly dependent on the first temperature and the temperature at the first and second temperature detection regions. The calculations are divided among separate calculation units such that the temperatures can be estimated in real time.
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公开(公告)号：US11942888B2
公开(公告)日：2024-03-26
申请号：US17722620
申请日：2022-04-18
Applicant: Nanjing Chervon Industry Co., Ltd.
Inventor： Jifeng Feng , Chao Xian
Abstract: A power tool includes a power a motor, a driver circuit, a capacitor, a capacitor switch, a temperature detection unit, and a controller. The capacitor is configured to filter out current spikes in a power supply. The capacitor switch is configured to control a working state of the capacitor. The temperature detection unit is configured to detect a temperature of a related object. The controller is configured to: acquire the temperature of the related object; control the capacitor switch to be in a first on or off state such that the capacitor works in a first working state when the temperature is lower than a temperature threshold; and control the capacitor switch to be in a second on or off state such that the capacitor works in a second working state when the temperature is higher than the temperature threshold.
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公开(公告)号：US11936320B2
公开(公告)日：2024-03-19
申请号：US17421659
申请日：2020-01-09
Applicant: VITESCO TECHNOLOGIES GMBH
Inventor： Michel Povlovitsch Seixas , Julien Métayer
CPC classification number: H02P29/60 , B60L3/0061 , G05B13/027 , B60L2240/425
Abstract: The disclosed computer-implemented method optimizes thermal control of a vehicle motor, the vehicle including a cooling device including an actuator varying cooling capacity, the method including training a reinforcement learning algorithm including the iterative steps: 1) determining an action to control an actuator by applying a control function to a current state of the thermal system, and implementing the action; 2) determining a modified state of the thermal system after implementing the action; 3) calculating, by implementing a thermodynamic reward function of the motor, a reward value based on the modified state of the thermal system, and the action; 4) updating a function for estimating thermal performance based on the current state of the thermal system, the modified state of the thermal system, the action and the reward; and 5) modifying the control function based on the update of the function for estimating thermal performance.
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Patent Agency Ranking
6.发明公开公开(公告)号：US20240022193A1
公开(公告)日：2024-01-18
申请号：US18256076
申请日：2021-11-05
Applicant: Robert Bosch GmbH
Inventor： Michele Hirsch , Christian Hahn , Markus Becker
IPC: H02P23/00 , H02P29/032 , H02P29/60 , H02P27/06
CPC classification number: H02P23/0022 , H02P29/032 , H02P29/60 , H02P27/06 , B60L3/0061
Abstract: The invention relates to a method for determining a value profile of a controlled variable of an electrical system. Differences between predetermined values of an output variable at an end time and a determined value of the output variable at the end time are determined. A value profile of the controlled variable in the time interval is predetermined, the value profile being dependent on an end value at the end time and is being determined uniquely by the specification of the end value. Allowed values of the controlled variable are determined such that, when the electrical system is activated, the value of the output variable at the end time is equal to the determined difference. A curve of the allowed values of the controlled variable is determined on the basis of the allowed values of the controlled variable. A point of intersection of the determined curve and a predetermined derating function is determined. The value profile of the controlled variable within the time interval is determined as the value profile for which the end value of the value profile assumes the value of the controlled variable at the point of intersection.
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公开(公告)号：US11863101B2
公开(公告)日：2024-01-02
申请号：US17427286
申请日：2019-03-28
Applicant: Mitsubishi Electric Corporation
Inventor： Takahiko Kobayashi
IPC: H02P29/66 , H02P29/024 , H02P29/60 , H02M1/00 , F25B31/02 , H02M1/32 , H02M7/5387 , H02P27/08
CPC classification number: H02P29/027 , F25B31/026 , H02M1/0009 , H02M1/32 , H02M7/53871 , H02P27/08 , H02P29/60 , F25B2500/08
Abstract: A driving apparatus includes: an inverter unit generating a three-phase alternating-current voltage from a direct-current voltage in accordance with a drive signal based on a voltage command and outputting the three-phase alternating-current voltage to a permanent-magnet motor, the permanent-magnet motor including a permanent magnet; a current detection unit detecting a motor current flowing through the permanent-magnet motor; and a control unit generating the voltage command to control an operation of the inverter unit and estimating a temperature of the permanent magnet to perform a protection operation on the inverter unit on the basis of the motor current and an overcurrent protection threshold. The control unit sets the overcurrent protection threshold on the basis of a magnet temperature estimated value of the permanent magnet and any one of a control computation period of the control unit, an output voltage frequency of the inverter unit, and a carrier frequency based on the output voltage frequency of the inverter unit.
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公开(公告)号：US20230318516A1
公开(公告)日：2023-10-05
申请号：US17709653
申请日：2022-03-31
Applicant: Cummins Inc.
Inventor： David B. Snyder , Andrew W. Osburn , Anant Puri
CPC classification number: H02P29/60 , G07C5/0808 , B60W20/00 , B60W50/00 , B60K6/28 , B60K11/02 , B60W2510/087 , B60W2510/081 , B60W2510/083 , B60W2050/0026
Abstract: A controller for controlling flow of coolant to one or more components of a vehicle is disclosed. The controller determines respective amounts of heat expected to be rejected by the one or more components of the vehicle in a steady state of operation at current operating conditions of the one or more components, and generates a feedforward flow control signal based at least in part on the determined amounts of heat and a target temperature for the one or more components. The controller generates a controller output signal based at least in part on the feedforward control signal, and provides the controller output signal to the cooling system to control flow of coolant to the one or more components of the vehicle from the cooling system in accordance with the determined amounts of heat expected to be rejected by the one or more components of the vehicle.
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公开(公告)号：US20230318512A1
公开(公告)日：2023-10-05
申请号：US18020842
申请日：2021-08-02
Applicant: Tsubakimoto Chain Co.
Inventor： Yoshiaki Yokoi , Haruki Teramukai
IPC: H02P29/024 , H02P29/028 , H02P29/60
CPC classification number: H02P29/026 , H02P29/028 , H02P29/60
Abstract: Provided are a motor device, a gear motor, a detection method, and a computer readable medium capable of detecting a load fluctuation and performing highly accurate preventive maintenance. The motor device comprises: a motor; a power detection circuit that detects power supplied to the motor; a temperature sensor that measures a temperature of the motor; a storage unit that stores a regression equation expressing a relationship between power detected by the power detection circuit and a temperature measured by the temperature sensor, and a physical quantity used to derive an output shaft torque of the motor; and a processing unit that derives the output shaft torque of the motor from the power detected by the power detection circuit and the temperature measured by the temperature sensor by using the physical quantity obtained by the regression equation.
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公开(公告)号：US11716046B2
公开(公告)日：2023-08-01
申请号：US17436783
申请日：2020-07-30
Applicant: HANON SYSTEMS EFP DEUTSCHLAND GMBH
Inventor： Karl Prinzhorn , Tu Hoang
CPC classification number: H02P29/02 , H02P23/14 , H02P29/60 , F16D48/02 , F16D2500/104 , F16D2500/70217 , F16D2500/70406 , F16H57/0435
Abstract: A control unit for controlling a motor of an oil pump. The control unit includes a receiving unit configured to receive a target pressure, a first determination unit configured to determine a torque from the target pressure and a speed of the motor via a first characteristic map, a second determination unit configured to determine a motor phase current from the determined torque via a second characteristic map, and an output unit configured to output the determined motor phase current.
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