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公开(公告)号：US11990799B2
公开(公告)日：2024-05-21
申请号：US17522986
申请日：2021-11-10
发明人： Naoki Iwagami
CPC分类号： H02K11/33 , H02K3/50 , H02K9/19 , H02K11/0141 , H02K2203/09
摘要： A capacitor module that smooths a voltage of an inverter circuit includes a supply assembly including a connection terminal to the inverter circuit, an alternating-current assembly including a capacitor and a first bus bar, and a direct-current assembly including a second bus bar connecting a DC power source and the supply assembly. The alternating-current assembly and the direct-current assembly are side by side in a plan view and one side view of the capacitor module, and are arranged with the side surfaces thereof opposing each other in an opposite side view. The supply assembly is located inside an outer peripheral region collectively surrounding both the alternating-current assembly and the direct-current assembly in the plan view.
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公开(公告)号：US20220416712A1
公开(公告)日：2022-12-29
申请号：US17847227
申请日：2022-06-23
摘要： A motor control device includes an inverter circuit to convert a DC power source voltage into a three-phase AC voltage and supply the three-phase AC voltage to the three-phase motor and a controller to generate three-phase PWM signals based on three-phase duty command values updated at a predetermined updating cycle and control the inverter circuit based on the three-phase PWM signals. The controller is configured or programmed to shift, when duty command values of at least two phases of the three-phase duty command values updated at a first update timing are the same, the duty command value of one phase of the duty command values of the two phases by a predetermined shift amount and shifts a duty command value of the one phase of the three-phase duty command values updated at a second update timing which is an update timing next to the first update timing by the shift amount in a direction opposite to a shift direction at the first update timing.
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公开(公告)号：US20220385207A1
公开(公告)日：2022-12-01
申请号：US17752875
申请日：2022-05-25
摘要： The disclosure provides an inverter device for driving an electric motor, including: an inverter circuit including a plurality of switching elements; and a control circuit controlling the inverter circuit. When a rotation speed of the electric motor is equal to or less than a preset rotation speed threshold and a torque of the electric motor is equal to or greater than a preset torque threshold, the control circuit changes a temperature estimation logic of the switching elements of the inverter circuit.
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公开(公告)号：US10651708B2
公开(公告)日：2020-05-12
申请号：US16145487
申请日：2018-09-28
发明人： Akihiro Iwasaki
IPC分类号： H02K11/33 , H02K11/27 , H02K11/40 , H05K1/14 , H05K1/02 , H05K5/02 , H05K5/03 , H05K5/00 , H05K7/20 , B62D5/04 , H05K7/14 , H02K9/22 , H02K5/22 , H02K15/12
摘要： A motor control device includes a resin cover, a control board on which at least a computer is mounted, a power board on which at least an inverter circuit and electrolytic capacitors are mounted, and a heat sink that radiates heat generated by the control board and heat generated by the power board, and controls a motor. The motor control device is electrically connected to the motor, and the resin cover, the control board, the power board, and the heat sink are disposed in order of the power board, the heat sink, the control board, and the resin cover in an axial direction of the motor from a motor side of the motor control device.
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公开(公告)号：US20140358365A1
公开(公告)日：2014-12-04
申请号：US14291293
申请日：2014-05-30
发明人： Naoki Iwagami
IPC分类号： B60T17/18
CPC分类号： B60T8/885 , B60T1/10 , B60T17/18 , B60T2270/406 , B60T2270/415 , B60T2270/604
摘要： An electronic control unit includes a controller configured to interrupt a failsafe relay for a predetermined time period while an external load, such as an electric servo motor, is in a non-operating state and to perform a diagnosis of a short-circuit fault, which may occur at a load power supply line, based on a difference between a first voltage applied to a positive power supply line and a second voltage applied to the load power supply line.
摘要翻译： 电子控制单元包括控制器，其被配置为在外部负载（例如电动伺服电动机）处于非运行状态时中断故障保护继电器达预定时间段并执行短路故障诊断， 可以基于施加到正电源线的第一电压和施加到负载电源线的第二电压之间的差异在负载电源线处发生。
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公开(公告)号：US12040729B2
公开(公告)日：2024-07-16
申请号：US17847227
申请日：2022-06-23
摘要： A motor control device includes an inverter circuit to convert a DC power source voltage into a three-phase AC voltage and supply the three-phase AC voltage to the three-phase motor and a controller to generate three-phase PWM signals based on three-phase duty command values updated at a predetermined updating cycle and control the inverter circuit based on the three-phase PWM signals. The controller is configured or programmed to shift, when duty command values of at least two phases of the three-phase duty command values updated at a first update timing are the same, the duty command value of one phase of the duty command values of the two phases by a predetermined shift amount and shifts a duty command value of the one phase of the three-phase duty command values updated at a second update timing which is an update timing next to the first update timing by the shift amount in a direction opposite to a shift direction at the first update timing.
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公开(公告)号：US11870375B2
公开(公告)日：2024-01-09
申请号：US17715007
申请日：2022-04-06
发明人： Takashi Koikegami , Satoshi Shimazu , Yuhi Nakada
CPC分类号： H02P21/18 , B60K1/00 , B60L15/007 , B60L15/20
摘要： A motor apparatus is provided. The motor apparatus includes a motor having a rotor and a stator, an inverter used to covert an input voltage into a three-phase alternating current (AC) voltage and provide the three-phase AC voltage to the motor, an inverter controller used to control the inverter, and a rotation angle sensor. The rotation angle sensor is fixed to the motor and is used to detect a rotation angle of the motor. The inverter controller includes a calculator. The calculator calculates an offset angle of an installation position of the rotation angle sensor according to a difference between a measured value and a theoretical value of a voltage phase of the motor.
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公开(公告)号：US11791758B2
公开(公告)日：2023-10-17
申请号：US17715013
申请日：2022-04-06
发明人： Satoshi Shimazu , Yuhi Nakada
IPC分类号： H02P27/08 , H02P27/06 , H02P29/032
CPC分类号： H02P27/06 , H02P29/032
摘要： An inverter device is provided. The inverter device converts power from a power source and drives a motor. The inverter device includes an inverter circuit having a switch, a driver circuit that switches the switch on and off, and a controller that controls the driver circuit. The controller has a speed calculator used to calculate a minimum speed of the motor based on a power source voltage. After the controller performs fail-safe control, when a speed of the motor is less than the minimum speed, the fail-safe control is ended.
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公开(公告)号：US20220385206A1
公开(公告)日：2022-12-01
申请号：US17752873
申请日：2022-05-25
发明人： Kazuhiro SAKAI , Satoshi Shimazu , Yuhi Nakada
摘要： The disclosure relates to an inverter device, including: an inverter circuit including a plurality of switching elements and a capacitor; an active discharge circuit including a first discharge resistor and a discharge switch connected in series, and connected between a positive electrode and a negative electrode of the capacitor; and a control circuit including a controller respectively connected to the switching elements and the discharge switch. The controller controls the switching elements and the discharge switch. The controller turns on the discharge switch to discharge the capacitor when the controller receives a discharge command from outside the inverter device and an electric motor is rotating.
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公开(公告)号：US20220329185A1
公开(公告)日：2022-10-13
申请号：US17715007
申请日：2022-04-06
发明人： Takashi Koikegami , Satoshi Shimazu , Yuhi Nakada
摘要： A motor apparatus is provided. The motor apparatus includes a motor having a rotor and a stator, an inverter used to covert an input voltage into a three-phase alternating current (AC) voltage and provide the three-phase AC voltage to the motor, an inverter controller used to control the inverter, and a rotation angle sensor. The rotation angle sensor is fixed to the motor and is used to detect a rotation angle of the motor. The inverter controller includes a calculator. The calculator calculates an offset angle of an installation position of the rotation angle sensor according to a difference between a measured value and a theoretical value of a voltage phase of the motor.
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