公开(公告)号：US20150333686A1

公开(公告)日：2015-11-19

申请号：US14709949

申请日：2015-05-12

Applicant: DENSO CORPORATION

Inventor： Yasuhiro NAKAI

IPC: H02P27/06 ,  H02P6/12

CPC classification number: G01D5/2073 ,  H02P6/12 ,  H02P21/06 ,  H02P21/22 ,  H02P27/06 ,  H02P27/08

Abstract: In an apparatus, a synchronizing unit synchronizes a measurement timing of values of first and second phase currents by a current sensor with a measurement timing of a rotational angle of a rotor by a rotational angle sensor. A current calculator calculates, based on the first and second parameter signals and the rotational angle of the rotor, values of two phase currents in a rotational coordinate system defined with respect to the rotor. A transmitter transmits the values of the two phase currents using a communication protocol. A controller communicates with the transmitter using the communication protocol to receive the values of the two phase currents. The controller controls the first phase current, the second phase current, and a third phase current flowing through respective first, second, and third phase windings of a three-phase rotary machine according to the values of the two-phase currents.

Abstract translation: 在一种装置中，同步单元通过电流传感器与旋转角度传感器同步转子的旋转角的测量定时来测量第一和第二相电流的值的测量定时。 电流计算器基于第一和第二参数信号和转子的旋转角度来计算相对于转子限定的旋转坐标系中的两相电流的值。 发射机使用通信协议传输两相电流的值。 控制器使用通信协议与发射机通信以接收两相电流的值。 控制器根据两相电流的值控制流过三相旋转电机的相应第一，第二和第三相绕组的第一相电流，第二相电流和第三相电流。

公开(公告)号：US20150323606A1

公开(公告)日：2015-11-12

申请号：US14706365

申请日：2015-05-07

Applicant: DENSO CORPORATION

Inventor： Yasuhiro NAKAI

IPC: G01R31/34

CPC classification number: G01R31/2829 ,  G01R31/343 ,  G01R35/00

Abstract: In a sensor output determination apparatus, a converter converts analog outputs of two sensors of a first-phase to two digital signals representing a current of the first-phase, and converts analog outputs of two sensors of a second-phase to two digital signals representing a current of the second-phase. The determination section determines whether the analog outputs of the two sensors of the first-phase are normal based on the two digital signals representing the current of the first-phase, and determines whether the analog outputs of the two sensors of the second-phase are normal based on the two digital signals representing the current of the second-phase. The transmission section transmits one of the two digital signals representing the current of the first-phase, one of the two digital signals representing the current of the second-phase, and a digital signal representing a result of determinations of the determination section, to the outside of the apparatus.

Abstract translation: 在传感器输出确定装置中，转换器将第一相的两个传感器的模拟输出转换成表示第一相的电流的两个数字信号，并将两个第二相的传感器的模拟输出转换成两个数字信号， 第二阶段的电流。 确定部分基于表示第一相电流的两个数字信号来确定第一相的两个传感器的模拟输出是否正常，并且确定第二相的两个传感器的模拟输出是否为 基于表示二次电流的两个数字信号的正常。 发送部分将表示第一相的电流，表示第二相的电流的两个数字信号中的一个和表示确定部的确定结果的数字信号的两个数字信号中的一个发送到 在设备外面。

公开(公告)号：US20140152205A1

公开(公告)日：2014-06-05

申请号：US14095987

申请日：2013-12-03

Applicant: DENSO CORPORATION

Inventor： Yasuhiro NAKAI

IPC: H02P21/00

CPC classification number: H02P21/05 ,  H02P21/22 ,  H02P2209/13

Abstract: A control device of a three-phase AC motor includes: an inverter for driving the motor; a current sensor for sensing a current; and a control means for controlling the motor by switching on/off each switching element in the inverter with feeding back dq axis current calculated values to dq axis current command values, or with feeding back a torque estimated value to a torque command value. The control means includes one first order current operation part that: expands a phase current sensed value of one phase in Fourier series as a function of an electric angle; extracts a first order component of the Fourier series; operates a first order current operated value; and integrates a calculated value based on the phase current sensed value at an integral angle for k periods of the electric angle so that Fourier coefficients are calculated.

Abstract translation: 三相交流电动机的控制装置包括：用于驱动电动机的逆变器; 用于感测电流的电流传感器; 以及控制装置，用于通过将逆变器中的dq轴当前计算值反馈到dq轴电流指令值，或者将转矩估计值反馈到转矩指令值来控制逆变器中的每个开关元件的接通/断开来控制电动机。 控制装置包括一个一阶电流操作部分，其以傅立叶级数作为电角度扩大一相的相电流检测值; 提取傅立叶级数的一阶分量; 操作一级电流值; 并且基于相电流检测值以电角度的k个周期的积分角积分计算值，从而计算傅立叶系数。

公开(公告)号：US20230327584A1

公开(公告)日：2023-10-12

申请号：US18156678

申请日：2023-01-19

Applicant: DENSO CORPORATION

Inventor： Shinsuke KAWAZU ,  Yasuhiro NAKAI

IPC: H02P5/50 ,  B64D27/24 ,  B60L3/12 ,  B60L50/60 ,  B60L15/20 ,  B64D33/08

CPC classification number: H02P5/50 ,  B64D27/24 ,  B60L3/12 ,  B60L50/60 ,  B60L15/2045 ,  B64D33/08 ,  B60L2200/10 ,  B60L2240/50

Abstract: An electric movable body includes a plurality of motors and a plurality of batteries, among which the motors and the batteries are connected such that each of the batteries supplies electric power to a motor set driving separate output shafts. When an abnormal motor that has been determined as abnormal is in a drive state, by switching the abnormal motor to a stop state, and switching one of the motors driving the output shaft driven by the abnormal motor and in the stop state to the drive state, the electric movable body assigns the drive state or the stop state to a motor set including the abnormal motor and to a motor set including the switched motor, for driving each of the output shafts by at least one motor and for supplying electric power from each of the batteries to at least one motor.

公开(公告)号：US20190052211A1

公开(公告)日：2019-02-14

申请号：US16079727

申请日：2017-02-22

Applicant: DENSO CORPORATION

Inventor： Yasuhiro NAKAI

IPC: H02P21/22 ,  H02P27/08

CPC classification number: H02P21/22 ,  H02P27/08

Abstract: A current controller calculates a drive signal by means of fundamental wave current control and high-order current control, for driving an inverter. A 5th order/7th order voltage command calculation section calculates a 5th order/7th order voltage command vector Vdk*, Vqk* by means of feedback control which makes a high-order dq transformation value extracted from the actual current coincide with a 5th order/7th order current command value Idk*, Iqk*. A 5th order/7th order vector transformation section executes high-order vector transformation processing on the 5th order/7th order voltage command vector Vdk*, Vqk* that is calculated by the 5th order/7th order voltage command calculation section, with the high-order vector transformation processing being executed such as to make a high-order voltage vector and a high-order current vector coincide in phase in high-order dq coordinates, and with the high-order vector transformation processing including rotation transformation by high-order vector rotation which rotates a high-order vector.

公开(公告)号：US20160028340A1

公开(公告)日：2016-01-28

申请号：US14805167

申请日：2015-07-21

Applicant: DENSO CORPORATION

Inventor： Yasuhiro NAKAI ,  Hajime UEMATSU

IPC: H02P21/00

CPC classification number: H02P21/06 ,  H02P21/05

Abstract: In a control apparatus, a target harmonic current obtainer obtains, according to a phase current flowing through at least one phase winding of a stator of a rotary machine, a target harmonic current component flowing in the rotary machine. The target harmonic current component correlates with a fundamental current component of a phase current. An inducing unit superimposes, on at least one of the amplitude and the phase of an output voltage vector of a power converter used by a switching unit, a harmonic signal that changes at an angular velocity identical to an angular velocity of the target harmonic current component. This induces a counteracting harmonic current component in the at least one phase winding. The counteracting harmonic current component counteracts the target harmonic current component.

Abstract translation: 在控制装置中，目标谐波电流获取器根据流过旋转机械的定子的至少一个相绕组的相电流，求出在旋转机中流动的目标谐波电流分量。 目标谐波电流分量与相电流的基波电流分量相关。 感应单元在由开关单元使用的功率转换器的输出电压矢量的幅度和相位中的至少一个上叠加以与目标谐波电流分量的角速度相同的角速度变化的谐波信号 。 这引起了至少一个相绕组中的抵消谐波电流分量。 抵消谐波电流分量抵消目标谐波电流分量。

公开(公告)号：US20160028339A1

公开(公告)日：2016-01-28

申请号：US14808742

申请日：2015-07-24

Applicant: Denso Corporation

Inventor： Yasuhiro NAKAI ,  Hajime UEMATSU

IPC: H02P21/00

CPC classification number: H02P29/0038 ,  H02P21/22 ,  H02P29/50

Abstract: In a control apparatus, a target harmonic current obtainer obtains, according to a phase current flowing through at least one phase winding of a stator, a target harmonic current component flowing in a rotary machine. The target harmonic current component is included in a fundamental current component of the phase current. An inducing unit superimposes, on the phase information, a fluctuating signal that changes at an angular velocity identical to an angular velocity of the target harmonic current component, to induce a counteracting harmonic current component in the at least one phase winding. The counteracting harmonic current component counteracts the target harmonic current component.

Abstract translation: 在控制装置中，目标谐波电流获取器根据流过定子的至少一个相绕组的相电流，求出在旋转机器中流动的目标谐波电流分量。 目标谐波电流分量包含在相电流的基波电流分量中。 感应单元在相位信息上叠加以与目标谐波电流分量的角速度相同的角速度变化的波动信号，以引起至少一个相绕组中的抵消谐波电流分量。 抵消谐波电流分量抵消目标谐波电流分量。

公开(公告)号：US20150229247A1

公开(公告)日：2015-08-13

申请号：US14620760

申请日：2015-02-12

Applicant: DENSO CORPORATION

Inventor： Yasuhiro NAKAI ,  Takahumi OOWADA

IPC: H02P6/00

CPC classification number: H02P21/06 ,  B60L7/14 ,  B60L11/005 ,  B60L11/14 ,  B60L15/007 ,  B60L15/025 ,  B60L15/2009 ,  B60L2210/40 ,  B60L2240/12 ,  B60L2240/421 ,  B60L2240/423 ,  B60L2240/427 ,  B60L2240/429 ,  B60L2240/441 ,  B60L2240/443 ,  B60L2240/527 ,  B60L2240/529 ,  H02P21/20 ,  H02P21/22 ,  H02P29/50 ,  Y02T10/643 ,  Y02T10/70 ,  Y02T10/7022 ,  Y02T10/7077 ,  Y02T10/7241 ,  Y02T10/7275

Abstract: In an apparatus, a controller performs, as a calculation of d- and q-axis values of a current vector, a first task and a second task. The first task expands one of a measured first phase current and another phase current into Fourier series of the corresponding phase current as a function of an electric rotational angle of an AC motor. The first task extracts a first-order component from the Fourier series to obtain first and second Fourier coefficients of the first-order component. The second task calculates the d-axis value as a first sum of the first and second Fourier coefficients to which temporally-invariant constants of a first pair have been multiplied, and the q-axis value as a second sum of the first and second Fourier coefficients to which temporally-invariant constants of a second pair have been multiplied.

Abstract translation: 在装置中，控制器执行当前向量的d轴和q轴值的计算，第一任务和第二任务。 第一任务将测量的第一相电流和另一相电流中的一个作为AC电动机的电旋转角度的函数将相应的相电流的傅里叶级数展开。 第一任务从傅里叶级数提取一阶分量以获得一阶分量的第一和第二傅里叶系数。 第二任务计算d轴值作为第一对的时间不变常数已经相乘的第一和第二傅立叶系数的第一和，并且q轴值作为第一和第二傅里叶的第二和 已经乘以第二对的时间不变常数的系数。

公开(公告)号：US20160294317A1

公开(公告)日：2016-10-06

申请号：US15078559

申请日：2016-03-23

Applicant: DENSO CORPORATION

Inventor： Yasuhiro NAKAI

IPC: H02P27/08 ,  H02P21/14 ,  H02P21/22

CPC classification number: H02P27/08 ,  H02P21/06 ,  H02P21/14 ,  H02P21/22 ,  H02P27/085 ,  H02P29/50

Abstract: An inverter control apparatus performs PWM control of a 3-phase inverter connected to a rotary machine, by operating switching devices corresponding to respective phases. In each of successive processing periods, the PWM control is applied such as to satisfy first and second conditions. The first condition is that the state of switching devices corresponding to a highest-voltage phase of the inverter during the processing period is held fixed throughout the processing period. The second condition is that switching devices corresponding to a lowest-voltage phase of the inverter undergoes a greater number of switching operations during the processing period than switching devices corresponding to an intermediate-voltage phase of the inverter. The frequency of harmonic components in AC currents flowing in the rotary machine can thereby be raised above the audible range, to suppress audible mechanical noise, without significantly increasing the amount of switching losses.

Abstract translation: 逆变器控制装置通过对与各相相对应的开关装置进行与旋转机连接的3相逆变器的PWM控制。 在每个连续的处理周期中，施加PWM控制以满足第一和第二条件。 第一个条件是在整个处理期间，在处理期间对应于逆变器的最高电压相位的开关装置的状态保持固定。 第二个条件是与处理期间相对应的开关器件与逆变器的中间电压相对应的开关器件相比，对应于逆变器的最低电压相位的开关器件经受更大数量的开关操作。 因此，在旋转机械中流动的AC电流中的谐波分量的频率可以提高到可听范围之上，以抑制可听见的机械噪声，而不显着增加开关损耗量。