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公开(公告)号：US09960721B2
公开(公告)日：2018-05-01
申请号：US14244140
申请日：2014-04-03
申请人： FANUC CORPORATION
发明人： Koujirou Sakai
IPC分类号： G01R31/02 , H02H3/04 , H02P23/00 , H02P27/08 , H02P29/032
CPC分类号： H02P23/00 , H02P27/085 , H02P29/032
摘要： A power failure detection unit in an AC-DC converter device detects power failure of a 3-phase AC power supply at the time of driving a motor, and generates a power failure detection signal in accordance with detection of power failure. A transmitter unit in the AC-DC converter device transmits the power failure detection signal using a cable, radio, or an optical fiber. A receiver unit in a DC-AC converter device receives the power failure detection signal transmitted from the transmitter unit.
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公开(公告)号：US09906174B2
公开(公告)日：2018-02-27
申请号：US15125094
申请日：2015-03-05
发明人： Yoshitaka Sugiyama , Masaki Kashima , Hiroyuki Ota
CPC分类号： H02P6/15 , B62D5/046 , H02P6/085 , H02P27/085
摘要： Provided are a power steering device and a control device for a power steering device, which are capable of reducing power consumption. The power steering device includes a current detection number setting circuit configured to set the number of times of detection of a DC bus current value by a current detecting circuit to a first predetermined number over a first predetermined cycle of a PWM period when the steering-state signal indicative of a steering operation state is received, and to set the number of times of detection so that the number of times of detection becomes smaller than the first predetermined number over the first predetermined cycle of the PWM period when a steering-state signal indicative of a non-steered state is received.
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公开(公告)号：US09893657B2
公开(公告)日：2018-02-13
申请号：US13607005
申请日：2012-09-07
申请人： Daniel Luedtke
发明人： Daniel Luedtke
CPC分类号： H02P6/14 , B60L2240/421 , B60L2240/423 , H02P27/085 , H02P2207/05 , H02P2209/09 , Y02T10/642 , Y02T10/7258
摘要： A vehicle includes one or more inverter-fed electric machines such as permanent magnet synchronous motors. A controller operates an inverter in either six-step mode or PWM mode depending upon motor speed, motor torque, and the inverter input voltage. A method of selecting the operating mode may determine a transition threshold based on the ratio of rotor speed to inverter input voltage, reducing the approximation error associated with multi-dimensional lookup tables. When the speed and voltage vary while maintaining a constant ratio and constant torque, the transition threshold does not change. Consequently, the controller remains in the same mode.
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公开(公告)号：US20170331410A1
公开(公告)日：2017-11-16
申请号：US15590072
申请日：2017-05-09
申请人： DENSO CORPORATION
发明人： Taizo KONDO
CPC分类号： H02P27/085 , H02P6/08 , H02P21/0021 , H02P21/18 , H02P21/26 , H02P25/18 , H02P2101/45
摘要： In a control apparatus for an alternating current (AC) motor, a control mode switching determiner compares a modulation rate with a modulation rate threshold, and selects between a synchronous control mode to perform synchronous control in a range where the modulation rate is equal to or greater than a modulation rate threshold and an asynchronous control mode to perform asynchronous control in a range where the modulation rate is less than the modulation rate threshold. The control mode switching determiner uses a different modulation rate threshold in a low rotational speed range and a high rotational speed range such that the modulation rate threshold in the low rotational speed range is greater than the modulation rate threshold in the high rotational speed range. A selector selects between outputting the synchronous pulse signal and outputting the asynchronous pulse signal.
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公开(公告)号：US20170327062A1
公开(公告)日：2017-11-16
申请号：US15526456
申请日：2014-11-26
发明人： Tomoaki MORI , Mitsuhiro SHOUJI
IPC分类号： B60R16/023 , H02P6/08 , B60L15/20 , H02P27/08 , H02P29/028
CPC分类号： B60R16/0232 , B60L15/2045 , H02P27/06 , H02P27/085 , H02P29/028 , H02P29/032 , Y02T10/7258
摘要： A control device of an electric motor, including an electric motor, a drive portion that supplies power to the electric motor, a voltage commanding portion that controls the drive portion on the basis of a torque command, and control a drive torque of the electric motor, a current limiting portion that outputs a limiting signal for limiting power outputted by the drive portion in a case in which a current value between the drive portion and the electric motor exceeds a predetermined value, and a limiting permission determining portion that determines whether the current limiting portion permits or prohibits an output of the limiting signal to the drive portion, when the drive torque of the electric motor cannot satisfy the torque command in a case in which the current limiting portion outputs the limiting signal, the limiting permission determining portion prohibits the current limiting portion from outputting the limiting signal to the drive portion.
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公开(公告)号：US09816743B2
公开(公告)日：2017-11-14
申请号：US15319413
申请日：2014-08-22
发明人： Shusaku Nakase , Shigeo Takata
CPC分类号： F25B49/025 , F04B35/04 , F04B49/02 , F04B49/06 , F04B49/065 , F25B13/00 , F25B2600/021 , F25B2700/151 , F25B2700/1931 , F25B2700/1933 , F25B2700/21151 , F25B2700/21152 , H02M1/12 , H02M5/458 , H02P21/14 , H02P27/08 , H02P27/085 , Y02B30/741
摘要： An electric motor drive device including a drive controller configured to control an operation of an inverter, the drive controller including a frequency setting unit configured to set an operating frequency of an electric motor, a frequency determining unit configured to determine whether or not the operating frequency set in the frequency setting unit is equal to or lower than a set frequency threshold value, a voltage determining unit configured to determine whether or not a value of a DC voltage is equal to or larger than a set voltage threshold value, and an inverter controller configured to control the inverter based on the operating frequency set in the frequency setting unit.
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公开(公告)号：US20170317620A1
公开(公告)日：2017-11-02
申请号：US15496236
申请日：2017-04-25
发明人： Toshihiro YAMAMOTO , Kenji YAMADA
CPC分类号： H02P6/153 , B60L11/1803 , B60L2210/40 , H02M7/5395 , H02P6/085 , H02P27/085 , Y02T10/7258
摘要： A vehicle performs first PWM control of generating a first PWM signal of a plurality of switching elements to switch the plurality of switching elements by comparing voltage commands of phases based on a torque command with a carrier voltage when a target operating point including a rotation speed and the torque command of the motor is outside a predetermined area, and selects and performs second PWM control of generating a second PWM signal of the plurality of switching elements to switch the plurality of switching elements based on a modulation factor of a voltage and a voltage phase based on the torque command and the number of pulses in a predetermined period of an electrical angle of the motor or the first PWM control when the target operating point is inside the predetermined area.
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公开(公告)号：US09793848B2
公开(公告)日：2017-10-17
申请号：US15044548
申请日：2016-02-16
申请人： DENSO CORPORATION
发明人： Tomotaka Suzuki
IPC分类号： H02P1/04 , H02P27/08 , H02M7/00 , H02P6/08 , B60L11/00 , H03K17/0412 , H03K17/16 , H02M7/5387 , H02M1/00
CPC分类号： H02P27/085 , B60L11/00 , B60L15/2045 , B60L2210/40 , B60L2240/423 , B60L2240/429 , B60L2240/529 , B60L2240/547 , H02M7/00 , H02M7/53875 , H02M2001/0048 , H02M2001/007 , H02P6/085 , H03K17/0412 , H03K17/163 , Y02T10/644 , Y02T10/645 , Y02T10/646 , Y02T10/7241 , Y02T10/7283
摘要： A power conversion circuit is mounted in a vehicle and controls an output torque of the rotating machine based on a requested command torque. A driving apparatus of a switching element controls a current flowing to the rotating machine. The driving apparatus sets at least one of a turn-on speed and a turn-off speed for the switching element to a plurality of switching speeds that are discretely determined, based on a parameter that is correlated with the output torque and has a controllable value. The driving apparatus turns on or off the switching element at the switching speeds. The switching speeds are allocated to the respective magnitudes of the parameter at uneven intervals, and determined such that the number of allocated switching speeds is greater in a range in which an occurrence frequency of the parameter is high, compared to a range in which the occurrence frequency is low.
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公开(公告)号：US20170288586A1
公开(公告)日：2017-10-05
申请号：US15506830
申请日：2014-08-29
CPC分类号： H02P21/0085 , H02P21/04 , H02P25/03 , H02P27/085 , H02P2207/05
摘要： A variable magnetization machine control system comprising a controller configured to adjust a d-axis current waveform and a q-axis current waveform in accordance with an operating condition of a variable magnetization machine to generate an adjusted d-axis current waveform and an adjusted q-axis current waveform that provide a driving voltage to drive the variable magnetization machine at a predetermined speed while maintaining the driving voltage below a predetermined maximum magnitude.
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公开(公告)号：US09762163B2
公开(公告)日：2017-09-12
申请号：US14760482
申请日：2013-11-26
发明人： Jul Ki Seok , Se Hwan Kim
CPC分类号： H02P21/30 , B60L15/025 , B60L2220/16 , H02P21/0021 , H02P21/18 , H02P21/22 , H02P21/26 , H02P27/085 , H02P2207/05 , Y02T10/643
摘要： Provides a method for controlling an AC motor, including: receiving a torque command value; generating a command current based on the torque command, and a command voltage by using the generated command current in a current vector controller (CVC) current control mode; switching to a hexagon voltage manipulating controller (HVMC) voltage control mode when the command voltage enters a voltage limit area, and generating a command voltage in the HVMC voltage control mode; and controlling torque of an AC motor by using the command voltage that is generated in the CVC current control mode or the HVMC voltage control mode.
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