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    • 1. 发明授权
    • Charge control method of capacitor in thyristor converter
    • 电容器在晶闸管转换器中的充电控制方法
    • US07368891B2
    • 2008-05-06
    • US11341856
    • 2006-01-30
    • Hajime TakahashiKazuhiko Hiramatsu
    • Hajime TakahashiKazuhiko Hiramatsu
    • H02J7/00
    • H02M7/125
    • Charging time of a capacitor is shortened while avoiding erroneous firing due to distortion of a power supply voltage and sustaining an inrush current at a constant level. In the charge control method of a capacitor in a thyristor converter comprising a thyristor for rectifying an AC voltage, a CPU delivering an on/off control signal to a thyristor driver for driving the thyristor, a voltage detection sensor for measuring the AC voltage and the capacitor charging voltage, and the capacitor connected with a DC circuit, the AC voltage and the capacitor charging voltage are measured by means of the voltage detection sensor, differential voltage between the firing phase voltage of the thyristor and the capacitor charging voltage is determined, and the thyristor is fired only when the firing phase voltage of the thyristor becomes lower than a specified voltage determined from the differential voltage.
    • 缩短电容器的充电时间,同时避免由于电源电压的失真而引起的错误点火,并且将浪涌电流维持在恒定水平。 在包括用于整流交流电压的晶闸管的晶闸管转换器中的电容器的充电控制方法中,将用于驱动晶闸管的晶闸管驱动器提供导通/截止控制信号的CPU,用于测量交流电压的电压检测传感器和 电容器充电电压和与直流电路连接的电容器,通过电压检测传感器测量交流电压和电容器充电电压,确定晶闸管的点火相电压与电容器充电电压之间的差分电压,以及 只有当晶闸管的点火相电压变得低于从差分电压确定的规定电压时,晶闸管才被烧断。
    • 2. 发明申请
    • Open-phase detecting method and apparatus
    • 开放相位检测方法和装置
    • US20060186892A1
    • 2006-08-24
    • US11341855
    • 2006-01-30
    • Kazuhiko HiramatsuHajime Takahashi
    • Kazuhiko HiramatsuHajime Takahashi
    • G01R31/00
    • G01R29/16
    • An open-phase detecting method wherein a simple hardware structure is used to achieve a reduced cost: the IRQ member is reduced to reduce the load on a CPU; the open phase detection is performed in two items, that is, a phase difference and a voltage sign to reduce the possibility of occurrence of erroneous detections; and any phase that is open can be also determined. In the method for detecting any open-phase of the power supply of a three-phase converter, a neutral point N1 is connected to a negative pole side bus N of the DC side output of the rectifying means; an end of the first resistor of each phase, which connects the first resistor to the second resistor of each phase, is connected to an AD converter via a high input impedance means of the respective phase to detect the voltage of the respective phase; the voltage of the respective phase is outputted to a CPU that serves as an open-phase detecting means; and an open phase is detected when the sings of two of the three line voltages determined based on the voltages of the respective phases are different from each other and a phase difference thereof exhibits a half-wave rectification waveform of 180°.
    • 一种开放相位检测方法,其中使用简单的硬件结构来实现降低的成本:减少IRQ成员以减少CPU上的负载; 开放相位检测分为两个部分,即相位差和电压符号,以减少发生错误检测的可能性; 也可以确定任何打开的相。 在用于检测三相变换器的电源的任何开相的方法中,中性点N1连接到整流装置的直流侧输出的负极侧总线N; 连接第一电阻和每相的第二电阻的每相第一电阻的一端通过各相的高输入阻抗装置连接到AD转换器,以检测各相的电压; 将各相的电压输出到作为开路相位检测单元的CPU, 并且当基于各相的电压确定的三条线电压中的两条线的声音彼此不同并且其相位差呈现180°的半波整流波形时,检测到开路相位。
    • 3. 发明申请
    • Charge control method of capacitor in thyristor converter
    • 电容器在晶闸管转换器中的充电控制方法
    • US20060186861A1
    • 2006-08-24
    • US11341856
    • 2006-01-30
    • Hajime TakahashiKazuhiko Hiramatsu
    • Hajime TakahashiKazuhiko Hiramatsu
    • H02J7/00
    • H02M7/125
    • Charging time of a capacitor is shortened while avoiding erroneous firing due to distortion of a power supply voltage and sustaining an inrush current at a constant level. In the charge control method of a capacitor in a thyristor converter comprising a thyristor for rectifying an AC voltage, a CPU delivering an on/off control signal to a thyristor driver for driving the thyristor, a voltage detection sensor for measuring the AC voltage and the capacitor charging voltage, and the capacitor connected with a DC circuit, the AC voltage and the capacitor charging voltage are measured by means of the voltage detection sensor, differential voltage between the firing phase voltage of the thyristor and the capacitor charging voltage is determined, and the thyristor is fired only when the firing phase voltage of the thyristor becomes lower than a specified voltage determined from the differential voltage.
    • 缩短电容器的充电时间,同时避免由于电源电压的失真而引起的错误点火,并且将浪涌电流维持在恒定水平。 在包括用于整流交流电压的晶闸管的晶闸管转换器中的电容器的充电控制方法中,将用于驱动晶闸管的晶闸管驱动器提供导通/截止控制信号的CPU,用于测量交流电压的电压检测传感器和 电容器充电电压和与直流电路连接的电容器,通过电压检测传感器测量交流电压和电容器充电电压,确定晶闸管的点火相电压与电容器充电电压之间的差分电压,以及 只有当晶闸管的点火相电压变得低于从差分电压确定的规定电压时,晶闸管才被烧断。
    • 4. 再颁专利
    • Winding machine stopping method
    • 绕线机停止方式
    • USRE37976E1
    • 2003-02-04
    • US09454171
    • 1999-12-01
    • Kazuhiko Hiramatsu
    • Kazuhiko Hiramatsu
    • B66D154
    • B66C13/23B66D1/46B66D5/30
    • A method of stopping of a winding machine that hoists and lowers an object prevents abrasion of the electromagnetic brake and the descent of load. The winding machine, which winches a load up or down in response to a torque command TREF to the electric motor M produced by the speed controller ASR in accordance with the a speed command NREF generated by the speed command generation circuit NRC, operates at the stopping of the machine to cease the motor control if the motor speed NFB is zero after the torque command to the motor M is brought to zero for a predetermined length of time following the issuance of a brake command to the electromagnetic brake which is coupled directly to the motor M.
    • 一种停止卷绕机的方法,该卷绕机提升和降低物体,防止了电磁制动器的磨损和负载的下降。 根据由速度控制器ASR根据由速度指令生成电路NRC生成的速度指令NREF而产生的对于电动机M的扭矩指令TREF的卷绕机的起动或停止的卷绕机在停止时动作 的机器停止电动机控制,如果在向直接连接到电动机M的电磁制动器发出制动指令之后的预定时间长度之后将电动机M的转矩指令设定为零,则电动机转速NFB为零 马达M.
    • 7. 发明授权
    • Inverter apparatus and method of reducing speed of alternating current motor
    • 降低交流电动机转速的变频装置及方法
    • US07612518B2
    • 2009-11-03
    • US11631788
    • 2005-07-01
    • Hideaki IuraKazuhiko Hiramatsu
    • Hideaki IuraKazuhiko Hiramatsu
    • H02P27/06
    • H02P23/20
    • There is provided an inverter capable of reducing a speed in a short period of time without generating an overcurrent even in a case of an alternating current motor which is easy to be saturated magnetically.A frequency of driving a motor is calculated by using a detecting value constituted by passing a direct current bus line voltage through a first filter portion, a voltage command is corrected by using a detecting value passing through a second filter portion, by making a time constant of the second filter portion larger than a time constant of the first filter portion in reducing a speed, the motor is brought into an overexcited state and loss is brought about in the motor.
    • 提供一种能够在短时间内降低速度而不产生过电流的逆变器,即使在容易被磁饱和的交流电动机的情况下也是如此。 通过使用由直流母线电压通过第一滤波器部分构成的检测值来计算驱动马达的频率,通过使用通过第二滤波器部分的检测值来校正电压指令,通过使时间常数 的第二过滤器部分比第一过滤器部分的时间常数大,以降低速度,电动机变得过度激活,并且在电动机中产生损失。
    • 8. 发明申请
    • Inverter Apparatus and Method of Reducing Speed of Alternating Current Motor
    • 逆变器装置及降低交流电机转速的方法
    • US20070216328A1
    • 2007-09-20
    • US11631788
    • 2005-07-01
    • Hideaki IuraKazuhiko Hiramatsu
    • Hideaki IuraKazuhiko Hiramatsu
    • H02P3/18
    • H02P23/20
    • There is provided an inverter capable of reducing a speed in a short period of time without generating an overcurrent even in a case of an alternating current motor which is easy to be saturated magnetically. A frequency of driving a motor is calculated by using a detecting value constituted by passing a direct current bus line voltage through a first filter portion, a voltage command is corrected by using a detecting value passing through a second filter portion, by making a time constant of the second filter portion larger than a time constant of the first filter portion in reducing a speed, the motor is brought into an overexcited state and loss is brought about in the motor.
    • 提供一种能够在短时间内降低速度而不产生过电流的逆变器,即使在容易被磁饱和的交流电动机的情况下也是如此。 通过使用由直流母线电压通过第一滤波器部分构成的检测值来计算驱动马达的频率,通过使用通过第二滤波器部分的检测值来校正电压指令,通过使时间常数 的第二过滤器部分比第一过滤器部分的时间常数大,以降低速度,电动机变得过度激活,并且在电动机中产生损失。
    • 9. 发明授权
    • Power conversion apparatus
    • 电力转换装置
    • US08670257B2
    • 2014-03-11
    • US13600710
    • 2012-08-31
    • Kazuhiko HiramatsuTadashi Sadohara
    • Kazuhiko HiramatsuTadashi Sadohara
    • H02M7/44
    • H02M1/12H02M7/48H02M2001/007H02M2007/53876
    • A power conversion apparatus includes a power converter, a voltage detector, a current detector, a detection voltage adjustor, and a controller. The power converter is configured to convert power from a power source into alternating-current power and is configured to output the alternating-current power to a power system. The voltage detector is configured to detect a voltage of the power system. The current detector is configured to detect a direct-current component of a current between the power converter and the power system. The detection voltage adjustor is configured to add a bias corresponding to the direct-current component to the voltage detected by the voltage detector, so as to generate a voltage detection signal, and is configured to output the voltage detection signal. The controller is configured to control the power converter to output an alternating-current voltage corresponding to the voltage detection signal.
    • 功率转换装置包括功率转换器,电压检测器,电流检测器,检测电压调节器和控制器。 电力转换器被配置为将来自电源的电力转换成交流电力,并且被配置为将交流电力输出到电力系统。 电压检测器被配置为检测电力系统的电压。 电流检测器被配置为检测功率转换器和电力系统之间的电流的直流分量。 检测电压调节器被配置为将与直流分量相对应的偏压添加到由电压检测器检测的电压,以便产生电压检测信号,并且被配置为输出电压检测信号。 控制器被配置为控制功率转换器输出对应于电压检测信号的交流电压。
    • 10. 发明授权
    • Winding machine stopping method
    • 绕线机停止方式
    • US5692733A
    • 1997-12-02
    • US596261
    • 1996-02-08
    • Kazuhiko Hiramatsu
    • Kazuhiko Hiramatsu
    • B66C13/23B66D1/46B66D1/54B66D5/30
    • B66C13/23B66D1/46B66D5/30
    • A method of stopping of a winding machine that hoists and lowers an object prevents abrasion of the electromagnetic brake and the descent of load. The winding machine, which winches a load up or down in response to a torque command T.sub.REF to the electric motor M produced by the speed controller ASR in accordance with the a speed command N.sub.REF generated by the speed command generation circuit NRC, operates at the stopping of the machine to cease the motor control if the motor speed N.sub.FB is zero after the torque command to the motor M is brought to zero for a predetermined length of time following the issuance of a brake command to the electromagnetic brake which is coupled directly to the motor M.
    • PCT No.PCT / JP95 / 01238 Sec。 371日期1996年2月8日 102(e)日期1996年2月8日PCT归档1995年6月21日PCT公布。 公开号WO95 / 35254 日期:1995年12月28日一种停止卷绕机的方法,该卷绕机提升和降低物体防止电磁制动器磨损和负载下降。 根据由速度控制器ASR根据由速度指令生成电路NRC生成的速度指令NREF而产生的对于电动机M的扭矩指令TREF的卷绕机的起动或停止的卷绕机在停止时动作 的机器停止电动机控制,如果在向直接连接到电动机M的电磁制动器发出制动指令之后的预定时间长度之后将电动机M的转矩指令设定为零,则电动机转速NFB为零 马达M.