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公开(公告)号：US11711045B2
公开(公告)日：2023-07-25
申请号：US17406215
申请日：2021-08-19
Applicant: DENSO CORPORATION
Inventor： Ryuji Omata , Michitsune Fujii , Daigo Nobe , Makoto Nakamura
CPC classification number: H02P29/028 , H02P25/22 , H02P27/08
Abstract: An electric motor drive device controls driving of a motor having open windings of two or more phases having end points that are open to each other. The switching arbitrator determines switching between a single-sided and dual-sided drive mode and arbitrates output of each of the inverters at a time of switching wherein output of the motor is continuous before and after the drive mode switching. The single-sided drive mode is a mode in which one of the two inverters performs switching drive. The dual-sided drive mode in which both the two inverters perform switching drive. The switching arbitrator gradually changes and increases the power level of the drive-start-side inverter from zero when the single-sided drive mode is switched to the dual-sided drive mode, and gradually changes and decreases the power level of the drive-end-side inverter to zero when the dual-sided drive mode is switched to the single-sided drive mode.
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公开(公告)号：US11211889B2
公开(公告)日：2021-12-28
申请号：US16360463
申请日：2019-03-21
Applicant: Toyota Jidosha Kabushiki Kaisha , Denso Corporation
Inventor： Kiyotaka Matsubara , Makoto Nakamura , Daigo Nobe , Ryuji Omata
Abstract: A control unit distributes a motor voltage vector corresponding to an output request for a motor to a first and a second inverter voltage vectors associated with outputs from a first inverter and a second inverter, and determines whether a switching condition for three-phase-on mode is satisfied. Determining that the switching condition is satisfied, the control unit switches to three-phase-on mode in which every high-side switching element or every low-side switching element of one inverter is turned on and one end of a coil in each phase of the motor is brought into common connection, and the control unit drives the motor with an output from the other inverter. Herein, the switching condition for three-phase-on mode includes failure of one inverter and an inverter voltage vector of an output from one inverter being approximate to 0 when neither of the inverters fails.
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公开(公告)号：US11114959B2
公开(公告)日：2021-09-07
申请号：US16360531
申请日：2019-03-21
Applicant: DENSO CORPORATION , TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Haruka Oka , Ryuji Omata , Kiyotaka Matsubara , Makoto Nakamura , Daigo Nobe
IPC: H02P4/00 , H02M7/5387 , B60L15/02 , B60L58/40
Abstract: In a so-called dual power source and dual inverter system, in which a pair of first and second inverters controls and drives a motor that includes multiple windings of phases each having open ends based on electric power supplied from a pair of power supplies, a motor driving system capable of appropriately allocating the electric power supplied from the pair of power supplies to the pair of inverters is provided. The motor driving system includes a pair of first and second inverter control circuits to generate a pair of first and second voltage instructions supplied to the first and second inverters based on a torque command, respectively. One of the first and second inverter control circuits includes a power controller that controls sharing of the electric power supplied from the first and second power supplies in accordance with a target electric power instruction.
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公开(公告)号：US09473059B2
公开(公告)日：2016-10-18
申请号：US14533411
申请日：2014-11-05
Applicant: DENSO CORPORATION
Inventor： Ryuji Omata , Takahumi Oowada
CPC classification number: H02P21/20 , B60L3/0061 , B60L7/14 , B60L11/005 , B60L11/14 , B60L15/025 , B60L15/20 , B60L15/2009 , B60L2210/14 , B60L2210/40 , B60L2220/14 , B60L2240/12 , B60L2240/421 , B60L2240/423 , B60L2240/425 , B60L2240/427 , B60L2240/429 , B60L2240/441 , B60L2240/443 , B60L2250/26 , B60L2260/44 , Y02T10/643 , Y02T10/70 , Y02T10/7022 , Y02T10/7077 , Y02T10/7225 , Y02T10/7241 , Y02T10/7275
Abstract: A control apparatus controls an AC motor by detecting current passing through one phase. The apparatus includes an upper controller which includes a torque command calculation section, and a torque monitoring section monitoring torque to determine whether the torque is within a range, and a lower controller which controls current supply to an inverter based on a torque command value to control the motor, and which acquires information on a current-supply state and a rotation state of the motor and transmits information on a control state to the upper controller. At least one of the controllers estimates a current estimate value of an estimated phase or a d-q axis current estimate value based on a current detection value of the one phase and an electrical angle, and calculates information for monitoring torque based on the current estimate value. The torque monitoring section monitors the torque based on the information.
Abstract translation: 控制装置通过检测通过一相的电流来控制AC电动机。 该装置包括：上部控制器，其包括转矩指令计算部，以及用于判定转矩是否在一个范围内的转矩监视部监视转矩;以及下控制器，其基于转矩指令值来控制对逆变器的供电，以控制 并且获取关于电流供应状态和电动机的旋转状态的信息，并且将控制状态的信息发送到上控制器。 至少一个控制器基于一相的电流检测值和电角度来估计估计相位或d-q轴当前估计值的当前估计值，并且基于当前估计值计算用于监视转矩的信息。 转矩监视部分根据信息监视转矩。
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公开(公告)号：US09318982B2
公开(公告)日：2016-04-19
申请号：US14533469
申请日：2014-11-05
Applicant: DENSO CORPORATION
Inventor： Ryuji Omata , Takahumi Oowada
IPC: H02P6/08 , H02P6/00 , B60L3/00 , B60L3/04 , B60L7/14 , B60L11/00 , B60L11/14 , B60L11/18 , B60L15/02 , B60L15/20 , H02P29/02
CPC classification number: H02P6/002 , B60L3/0038 , B60L3/04 , B60L7/14 , B60L11/005 , B60L11/14 , B60L11/1864 , B60L15/025 , B60L15/20 , B60L2210/40 , B60L2240/12 , B60L2240/421 , B60L2240/423 , B60L2240/429 , B60L2250/26 , H02P6/28 , H02P21/22 , H02P29/028 , H02P29/032 , Y02T10/643 , Y02T10/70 , Y02T10/7005 , Y02T10/7022 , Y02T10/7061 , Y02T10/7077 , Y02T10/7241 , Y02T10/7275
Abstract: According to a control apparatus for an AC motor, a switching section selects a two-phase control current value as a current fixing value, when a first current detection value of a first phase of the AC motor and a second current detection value of a second phase of the AC motor are normal. The switching section selects an one-phase control current value, which is calculated based on a normal phase current detection value, which is a value of the normal phase and is one of the first and the second current detection values, as the current fixing value, when it is determined that the current supplied to the AC motor has been stabilized after an abnormality is detected in part of the first and second detection values.
Abstract translation: 根据用于AC电动机的控制装置，当AC电动机的第一相的第一电流检测值和第二电流检测值的第二电流检测值为1时，开关部选择两相控制电流值作为电流固定值 交流电机的相位是正常的。 开关部选择基于作为正相的值的正常相电流检测值计算出的作为第一和第二电流检测值之一的单相控制电流值作为当前固定值 当在第一和第二检测值的一部分中检测到异常之后确定提供给AC电动机的电流已经稳定时。
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Patent Agency Ranking
公开(公告)号：US09120388B2
公开(公告)日：2015-09-01
申请号：US14174515
申请日：2014-02-06
Applicant: DENSO CORPORATION
Inventor： Ryuji Omata , Takeshi Itoh , Hirofumi Kako
CPC classification number: B60L11/14 , B60L3/0061 , B60L3/0092 , B60L11/123 , B60L15/025 , B60L15/20 , B60L2240/421 , B60L2240/423 , B60L2240/427 , B60L2240/429 , B60L2240/441 , B60L2240/443 , B60L2240/486 , B60L2240/507 , B60L2240/527 , B60L2240/529 , H02P5/74 , H02P5/747 , Y02T10/6217 , Y02T10/643 , Y02T10/7005 , Y02T10/7077 , Y02T10/72 , Y02T10/7275
Abstract: In a system for driving a three-phase rotating electrical machine of drive sources for applying separate drive forces to a rotary shaft, a phase of the rotating electrical machine, a current of which is detected by a current sensor and capable of being used for control of the rotating electrical machine, is defined as an effective sensor-phase of the rotating electrical machine. When the number of the effective sensor-phases is one, the rotating electrical machine is driven in a one-phase control mode based on the current of the effective sensor-phase under a condition where a rotation speed of the rotating electrical machine is greater than a predetermined positive threshold, and driven by the drive forces of the other drive sources under a condition where the rotation speed is not greater than the threshold.
Abstract translation: 在用于驱动用于向旋转轴施加分开的驱动力的驱动源的三相旋转电机的系统中，旋转电机的相位由电流传感器检测并能够用于控制 的旋转电机定义为旋转电机的有效传感器相位。 当有效传感器相位数为1时，旋转电机在旋转电机的转速大于的条件下，基于有效传感器相的电流，以单相控制方式驱动 预定的正阈值，并且在旋转速度不大于阈值的条件下由其他驱动源的驱动力驱动。
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公开(公告)号：US11303145B2
公开(公告)日：2022-04-12
申请号：US16710124
申请日：2019-12-11
Applicant: DENSO CORPORATION
Inventor： Hiroshi Shimizu , Ryuji Omata , Daigo Nobe , Makoto Nakamura
Abstract: A charging system charges a first voltage source and a second voltage source through an external charger. The first voltage source and the second voltage source are capable of supplying electric power to a rotating electric machine that includes a coil group configured by multiphase coils. The charging system includes a first inverter, a second inverter, at least three switches, and a control unit. The first inverter includes a first switching element. The second inverter includes a second switching element. The control unit is capable of switching charging between individual charging in which either of the first voltage source and the second voltage source is charged, and simultaneous charging in which the first voltage source and the second voltage source are both simultaneously charged, by controlling operations of the first switching element, the second switching element, and the switches.
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公开(公告)号：US11056987B2
公开(公告)日：2021-07-06
申请号：US16360559
申请日：2019-03-21
Applicant: Toyota Jidosha Kabushiki Kaisha , Denso Corporation
Inventor： Kiyotaka Matsubara , Makoto Nakamura , Daigo Nobe , Ryuji Omata
IPC: H02P6/08 , H02P21/22 , H02P6/12 , H02P11/00 , H02P27/06 , H02M7/44 , H02P11/06 , B60L15/02 , H02P6/04
Abstract: A motor system provided with one motor and two inverters includes a first inverter control unit which changes a frequency of a first carrier wave (first carrier frequency) used for producing a switching signal fora first inverter according to an operating point of the motor; and a second inverter control unit which changes a frequency of a second carrier wave (second carrier frequency) used for producing a switching signal for a second inverter according to an operating point of the motor. The first carrier frequency has a changing characteristic depending on the first inverter control unit and the second carrier frequency has a changing characteristic depending on the second inverter control unit, and the changing characteristics are different from each other to make the first carrier frequency and the second carrier frequency differ from each other at an identical operating point.
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公开(公告)号：US10951041B2
公开(公告)日：2021-03-16
申请号：US16360552
申请日：2019-03-21
Applicant: Toyota Jidosha Kabushiki Kaisha , Denso Corporation
Inventor： Kiyotaka Matsubara , Makoto Nakamura , Daigo Nobe , Ryuji Omata
Abstract: A motor system provided with one motor, two batteries, and two inverters further includes a charger which is connected to a first battery and supplies external power; and a control unit which controls drive of the first inverter and the second inverter to drive the motor. When the second battery is charged with the external power, the control unit drives the first inverter and the second inverter to allow power from the first inverter to be transmitted to the second battery through the motor and the second inverter while the motor is in a stationary state.
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公开(公告)号：US10784806B2
公开(公告)日：2020-09-22
申请号：US16269919
申请日：2019-02-07
Applicant: DENSO CORPORATION , TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor： Ryuji Omata , Yuri Murata , Makoto Nakamura , Kiyotaka Matsubara , Daigo Nobe
Abstract: An electric motor driving apparatus controls driving of an electric motor having two or more phase windings whose ends are open by using first and second inverters. A control unit includes a first inverter control circuit and a second inverter control circuit. The first inverter control circuit generates a first voltage command as an output voltage command to the first inverter based on a torque command. The second inverter control circuit generates a second voltage command as an output voltage command to the second inverter. The control unit determines a composite voltage command based on a first voltage command vector and a second voltage command including a case, in which a pure phase difference between the first voltage command vector on a dq coordinate corresponding to the first voltage command and the second voltage command vector on the dq coordinate corresponding to the second voltage command is other than 180°.
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