公开(公告)号：US07893638B2

公开(公告)日：2011-02-22

申请号：US11979250

申请日：2007-10-31

申请人： Sadahiro Akama ,  Shuji Agatsuma ,  Nobumasa Ueda ,  Masahiro Kuroda ,  Kiyoshi Nagata ,  Masaya Ootake

发明人： Sadahiro Akama ,  Shuji Agatsuma ,  Nobumasa Ueda ,  Masahiro Kuroda ,  Kiyoshi Nagata ,  Masaya Ootake

IPC分类号： H02P23/12

CPC分类号： H02P6/12 ,  H02P6/06 ,  H02P23/14

摘要： A motor driving apparatus has a loss-of-synchronism monitoring circuit that monitors the rotation of a rotary machine such as a brushless DC motor to detect a sign of transition to a state of loss of synchronism. When the sign is detected, an energization control circuit temporarily stops driving of the rotary machine to bring it into a free running state, and thereafter carries out control so as to resume driving of the rotary machine. Further, the motor driving apparatus has an inverter and a drive control circuit that controls switching operation of the inverter based on rotation of the rotary machine.

公开(公告)号：US08217603B2

公开(公告)日：2012-07-10

申请号：US12926541

申请日：2010-11-24

申请人： Sadahiro Akama ,  Shuji Agatsuma ,  Nobumasa Ueda ,  Masahiro Kuroda ,  Kiyoshi Nagata ,  Masaya Ootake

发明人： Sadahiro Akama ,  Shuji Agatsuma ,  Nobumasa Ueda ,  Masahiro Kuroda ,  Kiyoshi Nagata ,  Masaya Ootake

IPC分类号： H02H7/093

CPC分类号： H02P6/12 ,  H02P6/06 ,  H02P23/14

摘要： A motor driving apparatus has a loss-of-synchronism monitoring circuit that monitors the rotation of a rotary machine such as a brushless DC motor to detect a sign of transition to a state of loss of synchronism. When the sign is detected, an energization control circuit temporarily stops driving of the rotary machine to bring it into a free running state, and thereafter carries out control so as to resume driving of the rotary machine. Further, the motor driving apparatus has an inverter and a drive control circuit that controls switching operation of the inverter based on rotation of the rotary machine.

摘要翻译： 电动机驱动装置具有失去同步监视电路，其监视诸如无刷直流电动机之类的旋转机器的旋转，以检测转变到失去同步状态的符号。 当检测到符号时，通电控制电路暂时停止旋转机器的驱动以使其处于自由运行状态，然后进行控制以恢复旋转机器的驱动。 此外，马达驱动装置具有逆变器和驱动控制电路，其基于旋转机械的旋转来控制逆变器的切换操作。

公开(公告)号：US20110080127A1

公开(公告)日：2011-04-07

申请号：US12926541

申请日：2010-11-24

申请人： Sadahiro Akama ,  Shuji Agatsuma ,  Nobumasa Ueda ,  Masahiro Kuroda ,  Kiyoshi Nagata ,  Masaya Ootake

发明人： Sadahiro Akama ,  Shuji Agatsuma ,  Nobumasa Ueda ,  Masahiro Kuroda ,  Kiyoshi Nagata ,  Masaya Ootake

IPC分类号： H02H7/093

CPC分类号： H02P6/12 ,  H02P6/06 ,  H02P23/14

摘要： A motor driving apparatus has a loss-of-synchronism monitoring circuit that monitors the rotation of a rotary machine such as a brushless DC motor to detect a sign of transition to a state of loss of synchronism. When the sign is detected, an energization control circuit temporarily stops driving of the rotary machine to bring it into a free running state, and thereafter carries out control so as to resume driving of the rotary machine. Further, the motor driving apparatus has an inverter and a drive control circuit that controls switching operation of the inverter based on rotation of the rotary machine.

摘要翻译： 电动机驱动装置具有失去同步监视电路，其监视诸如无刷直流电动机之类的旋转机器的旋转，以检测转变到失去同步状态的符号。 当检测到符号时，通电控制电路暂时停止旋转机器的驱动以使其处于自由运行状态，然后进行控制以恢复旋转机器的驱动。 此外，马达驱动装置具有逆变器和驱动控制电路，其基于旋转机械的旋转来控制逆变器的切换操作。

公开(公告)号：US20080252242A1

公开(公告)日：2008-10-16

申请号：US11979250

申请日：2007-10-31

申请人： Sadahiro Akama ,  Shuji Agatsuma ,  Nobumasa Ueda ,  Masahiro Kuroda ,  Kiyoshi Nagata ,  Masaya Ootake

发明人： Sadahiro Akama ,  Shuji Agatsuma ,  Nobumasa Ueda ,  Masahiro Kuroda ,  Kiyoshi Nagata ,  Masaya Ootake

IPC分类号： H02P23/14 ,  H02P6/06

CPC分类号： H02P6/12 ,  H02P6/06 ,  H02P23/14

摘要： A motor driving apparatus has a loss-of-synchronism monitoring circuit that monitors the rotation of a rotary machine such as a brushless DC motor to detect a sign of transition to a state of loss of synchronism. When the sign is detected, an energization control circuit temporarily stops driving of the rotary machine to bring it into a free running state, and thereafter carries out control so as to resume driving of the rotary machine. Further, the motor driving apparatus has an inverter and a drive control circuit that controls switching operation of the inverter based on rotation of the rotary machine.

摘要翻译： 电动机驱动装置具有失去同步监视电路，其监视诸如无刷直流电动机之类的旋转机器的旋转，以检测转变到失去同步状态的符号。 当检测到符号时，通电控制电路暂时停止旋转机器的驱动以使其处于自由运行状态，然后进行控制以恢复旋转机器的驱动。 此外，马达驱动装置具有逆变器和驱动控制电路，其基于旋转机械的旋转来控制逆变器的切换操作。

公开(公告)号：US20090174350A1

公开(公告)日：2009-07-09

申请号：US12314716

申请日：2008-12-16

申请人： Masahiro Kuroda ,  Hiroshi Taki ,  Nobumasa Ueda ,  Sadahiro Akama ,  Kiyoshi Nagata ,  Masaya Ootake

发明人： Masahiro Kuroda ,  Hiroshi Taki ,  Nobumasa Ueda ,  Sadahiro Akama ,  Kiyoshi Nagata ,  Masaya Ootake

IPC分类号： H02P1/04

CPC分类号： H02P6/20 ,  H02M7/53875

摘要： A control system controls a multiphase rotating machine by a 120° energization process and a PWM process. In the 120° energization process, respective ones of switching elements of a high side arm and switching elements of a low side arm of a power conversion circuit are turned on. In the PWM process, the switching elements of the power conversion circuit turn on/off so that two phases that are connected to the switching elements that are in the on-state are alternately rendered conductive to the high potential side input terminal and the low potential side input terminal of the power conversion circuit.

摘要翻译： 控制系统通过120°通电过程和PWM过程控制多相旋转机器。 在120°通电过程中，高侧臂的开关元件和功率转换电路的低侧臂的开关元件中的各个导通。 在PWM处理中，功率转换电路的开关元件导通/截止，使得连接到处于导通状态的开关元件的两相交替地导通到高电位侧输入端子和低电位 电源转换电路的侧面输入端子。

公开(公告)号：US08257064B2

公开(公告)日：2012-09-04

申请号：US12535962

申请日：2009-08-05

申请人： Yuichirou Oota ,  Masaya Ootake ,  Kiyoshi Nagata

发明人： Yuichirou Oota ,  Masaya Ootake ,  Kiyoshi Nagata

IPC分类号： F04B35/04

CPC分类号： F02M37/08 ,  H02K1/185 ,  H02K5/12 ,  H02K5/20 ,  H02K7/14

摘要： An electric fuel pump is disclosed which includes a pump portion, a motor portion, a housing, and a fuel passage. The pump portion pressurizes fuel. The motor portion drives the pump portion. The motor portion includes a rotor with a rotating shaft and a stator that surrounds an outer periphery of the rotor. The housing surrounds, at least, an outer periphery of the stator of the motor portion. The fuel passage, through which the fuel pressurized by the pump portion passes the motor portion, is made up of a clearance between the outer periphery of the stator of the motor portion and an inner periphery of the housing. The clearance extends, at least, in the axial direction of the rotating shaft of the rotor of the motor portion.

摘要翻译： 公开了一种电动燃料泵，其包括泵部分，马达部分，壳体和燃料通道。 泵部分对燃料加压。 马达部分驱动泵部分。 马达部分包括具有旋转轴的转子和围绕转子的外周的定子。 壳体至少围绕电动机部分的定子的外周。 由泵部分加压的燃料通过电动机部分的燃料通道由电动机部分的定子的外周与壳体的内周之间的间隙构成。 该间隙至少在马达部分的转子的旋转轴的轴向上延伸。

公开(公告)号：US20100034674A1

公开(公告)日：2010-02-11

申请号：US12535962

申请日：2009-08-05

申请人： Yuichirou Oota ,  Masaya Ootake ,  Kiyoshi Nagata

发明人： Yuichirou Oota ,  Masaya Ootake ,  Kiyoshi Nagata

IPC分类号： F04B35/04 ,  H02K9/19

CPC分类号： F02M37/08 ,  H02K1/185 ,  H02K5/12 ,  H02K5/20 ,  H02K7/14

摘要： An electric fuel pump is disclosed which includes a pump portion, a motor portion, a housing, and a fuel passage. The pump portion pressurizes fuel. The motor portion drives the pump portion. The motor portion includes a rotor with a rotating shaft and a stator that surrounds an outer periphery of the rotor. The housing surrounds, at least, an outer periphery of the stator of the motor portion. The fuel passage, through which the fuel pressurized by the pump portion passes the motor portion, is made up of a clearance between the outer periphery of the stator of the motor portion and an inner periphery of the housing. The clearance extends, at least, in the axial direction of the rotating shaft of the rotor of the motor portion.

摘要翻译： 公开了一种电动燃料泵，其包括泵部分，马达部分，壳体和燃料通道。 泵部分对燃料加压。 马达部分驱动泵部分。 马达部分包括具有旋转轴的转子和围绕转子的外周的定子。 壳体至少围绕电动机部分的定子的外周。 由泵部分加压的燃料经过马达部分的燃料通道由马达部分的定子的外周与壳体的内周之间的间隙构成。 该间隙至少在马达部分的转子的旋转轴的轴向上延伸。

公开(公告)号：US08072165B2

公开(公告)日：2011-12-06

申请号：US12469187

申请日：2009-05-20

申请人： Hiroyasu Baba ,  Yuji Hayashi ,  Kiyoshi Nagata ,  Masaya Ootake

发明人： Hiroyasu Baba ,  Yuji Hayashi ,  Kiyoshi Nagata ,  Masaya Ootake

IPC分类号： H03K5/00 ,  H02P6/04

CPC分类号： H02P6/18 ,  H02P6/21

摘要： An apparatus for estimating rotor position for brushless motors capable of accurately estimating rotor position even though power source voltage fluctuates is provided. First, the power source voltage is detected, and voltage is supplied only for a certain period of time and a current response is detected. The current detection value is multiplied by the ratio of a reference voltage to the power source voltage detected to correct the current detection value. Specifically, the peak current detection value is corrected upwardly or downwardly in each direction. A voltage supplying direction in which the current detection value is maximized is searched for to estimate the rotor position and a brushless motor is started.

摘要翻译： 提供一种用于估计即使电源电压波动能够准确地估计转子位置的无刷电动机的转子位置的装置。 首先，检测电源电压，并且仅在一定时间段内提供电压，并检测电流响应。 电流检测值乘以基准电压与检测到的电源电压的比值，以校正电流检测值。 具体地，峰值电流检测值在每个方向上上下校正。 搜索电流检测值最大化的电压供给方向，来估计转子位置，开始无刷电动机。

公开(公告)号：US08054017B2

公开(公告)日：2011-11-08

申请号：US12469169

申请日：2009-05-20

申请人： Hiroyasu Baba ,  Yuji Hayashi ,  Naoki Yamamoto ,  Kiyoshi Nagata ,  Masaya Ootake

发明人： Hiroyasu Baba ,  Yuji Hayashi ,  Naoki Yamamoto ,  Kiyoshi Nagata ,  Masaya Ootake

IPC分类号： H03K5/00 ,  H02P6/04

CPC分类号： H02P6/18 ,  H02P6/21

摘要： An apparatus for estimating rotor position for brushless motors capable of accurately estimating rotor position is provided. The apparatus may be used as a start-up system for brushless motors. The apparatus performs accurate estimation even though power source voltage fluctuates, and is able to provide compact configuration. The apparatus supplies voltage to the coils respectively. In each supplying period, the apparatus counts voltage supply period of time until current value reaches to a current threshold value. Since a coil indicative of rotor stop position is prone to be magnetically saturated. The apparatus estimates the rotor stop position based on the voltage supply periods. Then, the apparatus starts a switching sequence based on the rotor stop position.

摘要翻译： 提供了一种用于估计能够精确估计转子位置的无刷电动机的转子位置的装置。 该装置可以用作无刷电动机的启动系统。 即使电源电压波动，该装置执行精确的估计，并且能够提供紧凑的配置。 该装置分别向线圈提供电压。 在每个供应周期中，该装置计算直到当前值达到当前阈值的电压供应时间段。 由于指示转子停止位置的线圈易于磁饱和。 该装置基于电压供应周期来估计转子停止位置。 然后，该装置基于转子停止位置开始切换顺序。

公开(公告)号：US20090289586A1

公开(公告)日：2009-11-26

申请号：US12469169

申请日：2009-05-20

申请人： Hiroyasu BABA ,  Yuji Hayashi ,  Naoki Yamamoto ,  Kiyoshi Nagata ,  Masaya Ootake

发明人： Hiroyasu BABA ,  Yuji Hayashi ,  Naoki Yamamoto ,  Kiyoshi Nagata ,  Masaya Ootake

IPC分类号： H02P6/20 ,  H02P6/18

CPC分类号： H02P6/18 ,  H02P6/21

摘要： An apparatus for estimating rotor position for brushless motors capable of accurately estimating rotor position is provided. The apparatus may be used as a start-up system for brushless motors. The apparatus performs accurate estimation even though power source voltage fluctuates, and is able to provide compact configuration. The apparatus supplies voltage to the coils respectively. In each supplying period, the apparatus counts voltage supply period of time until current value reaches to a current threshold value. Since a coil indicative of rotor stop position is prone to be magnetically saturated. The apparatus estimates the rotor stop position based on the voltage supply periods. Then, the apparatus starts a switching sequence based on the rotor stop position.

摘要翻译： 提供了一种用于估计能够精确估计转子位置的无刷电动机的转子位置的装置。 该装置可以用作无刷电动机的启动系统。 即使电源电压波动，该装置执行精确的估计，并且能够提供紧凑的配置。 该装置分别向线圈提供电压。 在每个供应周期中，该装置计算直到当前值达到当前阈值的电压供应时间段。 由于指示转子停止位置的线圈易于磁饱和。 该装置基于电压供应周期来估计转子停止位置。 然后，该装置基于转子停止位置开始切换顺序。