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公开(公告)号：US10215777B2
公开(公告)日：2019-02-26
申请号：US15322208
申请日：2015-04-23
申请人： Robert Bosch GmbH
发明人： Gholamabas Esteghlal
摘要： The invention relates to a method for operating an electric machine (2). The electric machine (2) is driven using field-oriented regulation, and a current relative position (θi) of a rotating field is detected by means of at least one sensor (5). At least one electric voltage (Uαs, Uβs) is generated which causes an electric rotor flux corresponding to the position (θi) detected by the sensor, the electric machine (2) is monitored for a torque generated by the voltage (Uαs, Uβs) and an absolute position of the rotating field is determined depending on the generated torque.
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公开(公告)号：US20190045961A1
公开(公告)日：2019-02-14
申请号：US16161877
申请日：2018-10-16
申请人： AXIS LABS INC.
摘要： A motor drive system for operating a mechanism for raising and lowering window coverings includes a motor operating under electrical power and an electrically powered drive system. The motor drive system advances a continuous cord loop in response to positional commands from a controller. An input-output device includes a capacitive touch strip that receives user inputs along an input axis, and an LEDs strip aligned with the input axis. A group mode module communicates the positional commands to other motor drive systems within an identified group to operate respective other mechanisms of the other motor drive systems. A set control module enables user calibration of a top position and a bottom position of travel of the window covering. The input-output device extends vertically on the exterior of a housing for the motor drive system, and the housing supports input buttons of the group mode module and the set control module.
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公开(公告)号：US10122305B2
公开(公告)日：2018-11-06
申请号：US15552631
申请日：2016-02-18
申请人： DENSO CORPORATION
发明人： Koji Sakaguchi
摘要： A motor control apparatus which is applied to an actuator provided with a motor and an encoder, and drives the motor is provided. The motor control apparatus comprises: a controller that learns an initial position of a rotor, and also decides an energized phase; and a drive circuit that performs switching operation to energize an energized phase. The controller learns that, in learning the initial position, the initial position of the rotor is a two-phase facing position in which two adjacent salient poles of the rotor face salient poles of two energized phases of a stator, and the initial position of the rotor is a one-phase facing position in which one salient pole of the rotor faces a salient pole of one non-energized phase of the stator.
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公开(公告)号：US09988955B1
公开(公告)日：2018-06-05
申请号：US15361734
申请日：2016-11-28
CPC分类号： F01M11/0004 , B60L2240/425 , F01M2011/0045 , F01M2011/0083 , H02P1/16
摘要： A drive unit, method, and control system are provided that warm drive unit fluid in a drive unit having a main pump, a scavenge pump, and an electric motor for powering an axle of a vehicle. The control system and method are configured to fill a main sump of the drive unit with drive unit fluid to a predetermined fill level. In a warm-up mode, the method and control system operate the electric motor to heat the drive unit fluid within the main sump while the vehicle is stationary and the electric motor is at least partially disposed in the drive unit fluid within the main sump. Further in the warm-up mode, the method and control system are configured to operate the scavenge pump to pump the drive unit fluid from the main sump into an auxiliary reservoir after the drive unit fluid has been heated by the electric motor.
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公开(公告)号：US20180149051A1
公开(公告)日：2018-05-31
申请号：US15361734
申请日：2016-11-28
CPC分类号： F01M11/0004 , B60L2240/425 , F01M2011/0045 , F01M2011/0083 , H02P1/16
摘要： A drive unit, method, and control system are provided that warm drive unit fluid in a drive unit having a main pump, a scavenge pump, and an electric motor for powering an axle of a vehicle. The control system and method are configured to fill a main sump of the drive unit with drive unit fluid to a predetermined fill level. In a warm-up mode, the method and control system operate the electric motor to heat the drive unit fluid within the main sump while the vehicle is stationary and the electric motor is at least partially disposed in the drive unit fluid within the main sump. Further in the warm-up mode, the method and control system are configured to operate the scavenge pump to pump the drive unit fluid from the main sump into an auxiliary reservoir after the drive unit fluid has been heated by the electric motor.
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公开(公告)号：US20180062544A1
公开(公告)日：2018-03-01
申请号：US15254729
申请日：2016-09-01
申请人： Eaton Corporation
摘要： A motor starter includes a first switch configured to couple and decouple an AC power source to a motor, a second switch configured to bypass the first switch, and a control circuit configured to operate the first switch to modulate an AC voltage applied to the motor from the AC power source at a frequency that is less than a fundamental frequency of the AC voltage and to operate the second switch to bypass the first switch responsive to operation of the motor meeting a predetermined criterion.
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公开(公告)号：US09863077B2
公开(公告)日：2018-01-09
申请号：US14923827
申请日：2015-10-27
申请人： LG ELECTRONICS INC.
发明人： Hwanjin Jung , Naeun Kim , Sanghyun Lee , Bonkwon Koo
CPC分类号： D06F33/02 , D06F39/083 , D06F39/085 , D06F39/087 , D06F2202/065 , D06F2202/085 , D06F2202/12 , D06F2204/08 , D06F2204/084 , D06F2204/10 , D06F2214/00 , D06F2220/00 , H02P1/16 , H02P3/06 , H02P29/02
摘要： A washing machine is disclosed. The washing machine includes a pump that is configured to drain or circulate water and that comprises a motor that is configured to operate the pump. The washing machine further includes a motor driver that is configured to supply operation power to the motor. The washing machine further includes a motor controller that is configured to set a rotation speed of the motor and that is configured to supply, to the motor driver, a signal that controls the motor. The washing machine further includes a current sensor that is configured to measure a current supplied from the motor driver to the motor. The washing machine further includes a speed sensor. The washing machine further includes a water level sensor. The washing machine further includes a main controller that is configured to start or stop operation of the motor by supplying a control command.
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公开(公告)号：US20170257041A1
公开(公告)日：2017-09-07
申请号：US15506785
申请日：2015-08-25
申请人： Kevin LEE , Kai WANG , Wenxi YAO , Eaton Corporation
CPC分类号： H02K17/02 , H02P1/28 , H02P1/30 , H02P23/0031 , H02P27/047 , H02P2103/10
摘要： The present invention provides an acceleration method for V/f controlled induction motor in flux-weakening region, which comprises: acquiring no-load magnetizing current Im of the induction motor at current stator frequency; selecting a smaller one of 0.5·Im(1/σ+1) and (Im2+σ)/(Im+σIm) as magnetizing current set point, in which σ is an estimated total leakage inductance coefficient; getting an error signal by subtracting the magnetizing current of the induction motor from the magnetizing current set point; determining the stator frequency for the next control period according to the error signal which is provided as a controlling variable of negative feedback. The acceleration method of the present invention can provide the maximum output torque in flux-weakening region and has a larger tolerance for the error of the estimated leakage inductance.
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89.发明授权公开(公告)号：US09742316B2
公开(公告)日：2017-08-22
申请号：US14693165
申请日：2015-04-22
发明人： Christophe Durand , Delcho Penkov
摘要： The invention relates to a method of starting an electric motor (10) powered by an alternating power supply voltage, said method consisting of supplying current to the motor (10) with a delay tret, during each period of the power supply voltage. The starting method comprises a first sequence in which the following steps are carried out during each nth period of the power supply voltage, where n is an integer number greater than 0: a) determine the value of a variation of a resistance of the electric motor during the previous n periods of the power supply voltage; b) compare said value of the variation of the determined motor resistance with a first threshold resistance value; c) if the value of the variation of the motor resistance is less than the first threshold value, reduce tret. The invention also relates to a starter device and a computer program.
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公开(公告)号：US09722513B2
公开(公告)日：2017-08-01
申请号：US14832794
申请日：2015-08-21
摘要： One embodiment describes a method that includes determining a desired torque level of a motor actuated by a motor starter; determining, using a control system, a configuration of the motor starter to achieve the desired torque level, in which determining the configuration includes determining which of a plurality of switching devices in the motor starter should be opened and which should be closed; and instructing, using the control system, the motor starter to implement the determined configuration by opening or closing one or more of the plurality of switching devices.
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