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公开(公告)号：US20240136968A1
公开(公告)日：2024-04-25
申请号：US18514489
申请日：2023-11-20
发明人： Babak MAZDA , Adya S. TRIPATHI , Paul CARVELL
IPC分类号： H02P27/08
CPC分类号： H02P27/085 , H02P2201/09
摘要： A boost circuit is arranged to reduce rise and fall times of pulsed power used for pulsed control operation of electric machines. Magnetic energy present in the electric machine at the end of a pulse is extracted by the boost circuit to reduce the pulse fall time. The energy is stored by the boost circuit and then applied at the beginning of a subsequent pulse to reduce the rise time. By reducing rise and fall times compared to not using such a boost circuit, machine efficiency is improved.
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112.发明公开公开(公告)号：US20240072712A1
公开(公告)日：2024-02-29
申请号：US18274355
申请日：2021-03-09
发明人： Se Hwa CHOE , Cha Seung JUN , Sung Yong SHIN , Sun Ku KWON , Dong Hyun LIM
CPC分类号： H02P27/085 , A47L9/2842 , H02P5/50 , H02P2209/11
摘要： Provided an electronic device including a main body and a kit connected to the main body, and the main body includes a battery, a first motor, an electric wire connected to the battery, and a first controller connected to the electric wire, the kit includes a second motor supplied with power through the electric wire, an inverter connected to the second motor, and a second controller connected to the electric wire and configured to control driving of the inverter, and the second controller is configured to transmit information to the first controller through switching frequency control of the inverter and control a switching frequency of the inverter so that a current associated with the second motor is greater than zero in a section in which transmission of the information is performed.
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113.发明授权公开(公告)号：US11916505B2
公开(公告)日：2024-02-27
申请号：US17185794
申请日：2021-02-25
申请人： AUDI AG
发明人： Martin Adam , Alexander Tkatschenko
IPC分类号： H02P27/08
CPC分类号： H02P27/085
摘要： A method for operating a drive device for a motor vehicle is provided, wherein the drive device has an electric machine which is electrically connected to a DC power source via an inverter controlled by means of pulse width modulation. The pulse width modulation is performed depending on a predetermined duty cycle. When the duty cycle that is less than a threshold value, a continuous pulse width modulation is used to control the inverter. The pulse width modulation is switched to a discontinuous pulse width modulation when the threshold value is exceeded. A motor vehicle and a drive device for a motor vehicle are also provided.
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公开(公告)号：US11909344B2
公开(公告)日：2024-02-20
申请号：US17306027
申请日：2021-05-03
申请人： SUBARU CORPORATION
发明人： Kazuma Shimojo
CPC分类号： H02P29/50 , B60L53/20 , H02P27/085
摘要： A control device includes a processor configured to control operation of an inverter by a synchronous pulse width modulation control using a pulse width modulation signal. The inverter is coupled to a motor. The pulse width modulation signal is generated by comparison of a carrier signal and a voltage command. In the synchronous pulse width modulation control, on the condition that resonance is caused, in a circuit including the inverter, by a particular harmonic component out of harmonic components to be generated in accordance with the pulse width modulation signal, the processor is configured to change the number of pulses of the carrier signal in one cycle of the voltage command, from the main number of pulses to the sub-number of pulses.
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115.发明授权公开(公告)号：US11888424B1
公开(公告)日：2024-01-30
申请号：US18200264
申请日：2023-05-22
发明人： Paul Carvell , Philippe Farah
IPC分类号： H02P25/064 , H02P27/08
CPC分类号： H02P27/085
摘要： A method of controlling an electric machine having a separately excitable rotor and stator includes pulsing the electric machine and controlling the electric machine to an OFF state. Pulsing the electric machine includes exiting the rotor with direction current and the stator with a stator biasing current at the same time to generate magnetic flux in the rotor via two separate paths. Pulsing the electric machine may also include terminating the stator basing current when a desired magnetic flux is generated in the rotor. Pulsing the electric machine may include proving a stator flux to the stator such that the electric machine provides a pulse torque.
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公开(公告)号：US11876470B2
公开(公告)日：2024-01-16
申请号：US17169122
申请日：2021-02-05
发明人： Chris Wolf , Michael Degner , Yue Nie
CPC分类号： H02P27/085 , B60K6/26 , B60Y2200/92 , B60Y2400/60 , B60Y2400/61
摘要： Methods and systems are provided for adapting pulse width modulation with randomized zero-sequence components for control of an electrified powertrain of a vehicle. In one example, a method may include determining a zero-sequence voltage of an electric machine of the vehicle based on a random distribution, and adjusting a voltage reference signal of the electric machine based on the determined zero-sequence voltage to decrease ambient acoustic noise in the vehicle. In this way, spectral energy dispersion of pulse width modulated control of the electric machine may be increased without affecting torque production of the electric machine.
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公开(公告)号：US20230378897A1
公开(公告)日：2023-11-23
申请号：US18225110
申请日：2023-07-22
发明人： Michael LIU
IPC分类号： H02P27/08 , H02P29/032 , H02M7/5387 , H02M7/5395
CPC分类号： H02P27/085 , H02P29/032 , H02M7/53873 , H02M7/5395
摘要： A three-phase digital power inverter system controlled by a MCU thereof is provided, wherein during a constant current power source for accelerator control in combination with a three-wire potentiometer are inputted to a MCU for qualification and calculation base on a computation algorithm to obtain data, an accelerator line state and a brake line state are detected simultaneously for whether they are working well individually, so as to effectively prevent any electrical failure due to mechanical failure of the accelerator or the brake or open circuit/short circuit of the accelerator line or the brake line that may cause accident due to out of control of the accelerator or brake respectively. These are the potential risk factors of electric motor vehicles while the present invention can substantially eliminate such potential factor and provide a more reliable performance of electric motor vehicles.
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118.发明公开公开(公告)号：US20230361708A1
公开(公告)日：2023-11-09
申请号：US18320399
申请日：2023-05-19
申请人： Karma Automotive LLC
发明人： Saleh ZIAIEINEJAD , Geng Niu
CPC分类号： H02P23/0077 , B60L15/20 , H02P27/085 , B60Y2200/91
摘要： A voltage saturation prevention algorithm used as at least part of a method of controlling an electric vehicle, wherein the electric vehicle comprises an electric motor, a controller, and an inverter. The controller receives a control signal with an instruction to operate the electric motor, then sends a switching signal corresponding to the control signal to the inverter, wherein the inverter provides a plurality of output signals for operation of the electric motor. The method includes determining the expected amplitude of the plurality of output signals based on the instruction to operate the electric motor, calculating the amount of modification of the plurality of output signals required to prevent the expected amplitude from reaching a saturation value, and modifying, based on the calculation, the instruction to operate the electric motor to prevent the expected amplitude from reaching the saturation value. The method is implemented in software, without any additional hardware.
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公开(公告)号：US20230321810A1
公开(公告)日：2023-10-12
申请号：US18186421
申请日：2023-03-20
发明人： Austin Gaspar , Robert Keys
CPC分类号： B25F5/001 , H02K7/11 , H02K7/145 , H02P21/22 , H02P27/085
摘要： Systems and methods for electronically limiting torque in a power tool. One power tool includes a motor, a trigger, and a controller connected to the trigger and the motor. The controller is configured to provide, in response to actuation of the trigger, power to the motor, determine a speed of the motor, activate the electronic clutch, in response to determining that the speed of the motor has dropped by the speed drop threshold within the first period of time, to electronically brake the motor for a second period of time, and provide, in response to the second period of time having passed, power to the motor.
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公开(公告)号：US11770091B1
公开(公告)日：2023-09-26
申请号：US17750298
申请日：2022-05-21
发明人： Michael Liu
IPC分类号： H02P27/08 , H02P29/032 , H02M7/5387 , H02M7/5395
CPC分类号： H02P27/085 , H02M7/5395 , H02M7/53873 , H02P29/032
摘要： A three-phase digital power inverter system controlled by a MCU thereof is provided, wherein during a constant current power source for accelerator control in combination with a three-wire potentiometer are inputted to a MCU for qualification and calculation base on a computation algorithm to obtain data, an accelerator line state and a brake line state are detected simultaneously for whether they are working well individually, so as to effectively prevent any electrical failure due to mechanical failure of the accelerator or the brake or open circuit/short circuit of the accelerator line or the brake line that may cause accident due to out of control of the accelerator or brake respectively. These are the potential risk factors of electric motor vehicles while the present invention can substantially eliminate such potential factor and provide a more reliable performance of electric motor vehicles.
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