会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 3. 发明授权
    • Power inverter with overload protection apparatus
    • 电力变频器带过载保护装置
    • US4527214A
    • 1985-07-02
    • US481150
    • 1983-04-01
    • Motonobu HattoriAkira IshibashiHiromi IshidaKenji Nandoh
    • Motonobu HattoriAkira IshibashiHiromi IshidaKenji Nandoh
    • H02H7/085H02H3/093H02H7/08H02M1/36H02M5/45H02H7/122H02H5/04
    • H02M1/36H02H3/0935H02M5/4505
    • A power inverter including a converter unit for rectifying AC power into DC power, an inverter for inverting the DC power into AC power for driving a load apparatus, and a protection apparatus for protecting the load apparatus from being overloaded. The load protecting apparatus comprises current detecting means for detecting a current supplied to the inverter unit from the converter unit, a memory for storing a thermally limited operation time characteristic determined in consideration of cooling effect proper to the load apparatus, and an abnormality detecting circuit for producing an abnormality signal to stop the operation of the inverter unit when an accumulated value calculated on the basis of the current value detected by the current detector at a predetermined sampling interval exceeds the characteristic value previously stored in the memory. The load apparatus can be positively protected from overload notwithstanding variations in the output voltage and the output frequency of the power inverter.
    • 一种电力逆变器,包括用于将交流电转换成直流电力的转换器单元,用于将直流电转换成用于驱动负载装置的交流电力的逆变器,以及用于保护负载装置不被过载的保护装置。 负载保护装置包括电流检测装置,用于检测从转换器单元提供给逆变器单元的电流;存储器,用于存储考虑到适用于负载装置的冷却效果确定的热限制运行时间特性;以及异常检测电路, 产生异常信号以在基于由电流检测器检测的当前值以预定采样间隔计算的累加值超过预先存储在存储器中的特征值时停止逆变器单元的操作。 尽管输出电压和功率逆变器的输出频率有变化,负载装置也可以得到积极的保护,避免过载。
    • 5. 发明授权
    • Control system for PWM inverter
    • PWM逆变器控制系统
    • US4767976A
    • 1988-08-30
    • US37853
    • 1987-04-13
    • Nobuyoshi MutohAkiteru UedaMotonobu HattoriSatoshi IboriHideyuki ShimonabeKenji Nandoh
    • Nobuyoshi MutohAkiteru UedaMotonobu HattoriSatoshi IboriHideyuki ShimonabeKenji Nandoh
    • H02P27/06H02P21/08H02P27/04H02P27/08H02P5/40
    • H02P27/08H02P27/047
    • A control system for controlling a PWM inverter so that the inverter drives an induction motor at a variable voltage and a variable frequency while keeping constant a ratio of the output voltage of the inverter to the output frequency thereof, is disclosed which includes current component detecting means for detecting an effective current corresponding to a load, from the input current of the induction motor, frequency setting means for setting the output frequency of the PWM inverter, flux setting means for setting the amount of magnetic flux generated in the induction motor, correcting-frequency calculating means for calculating a frequency correcting quantity proportional to the effective current, and correcting-flux calculating means for calculating a flux correcting quantity proportional to the effective current. In a case where the detected effective current is judged to be less than a predetermined value, the frequency correcting quantity is added to the set output frequency to obtain an output frequency command, and the sum of the flux correcting quantity and the set amount of magnetic flux is multiplied by the value of the output frequency command to obtain an output voltage command, for the purpose of controlling the operation of the PWM inverter on the basis of the output frequency command and the output voltage command.
    • 一种用于控制PWM逆变器的控制系统,使得逆变器以可变电压和可变频率驱动感应电动机,同时保持变频器的输出电压与其输出频率的比例恒定,其包括电流分量检测装置 用于从感应电动机的输入电流检测与负载相对应的有效电流;频率设定装置,用于设定PWM逆变器的输出频率;磁通设定装置,用于设定感应电动机中产生的磁通量, 频率计算装置,用于计算与有效电流成比例的频率校正量;以及校正磁通计算装置,用于计算与有效电流成比例的磁通校正量。 在检测到的有效电流被判断为小于预定值的情况下,将频率校正量与设定的输出频率相加,得到输出频率指令,并且磁通校正量与设定的磁场量之和 为了根据输出频率指令和输出电压指令来控制PWM逆变器的运行,磁通量乘以输出频率指令的值以获得输出电压指令。
    • 6. 发明授权
    • Control apparatus for PWM inverter
    • PWM逆变器控制装置
    • US4562524A
    • 1985-12-31
    • US664773
    • 1984-10-25
    • Nobuyoshi MutohKeijiro SakaiMotonobu HattoriYuichiro Nagato
    • Nobuyoshi MutohKeijiro SakaiMotonobu HattoriYuichiro Nagato
    • H02M7/48H02M7/217
    • H02M7/53873
    • A control apparatus for producing a pulse width modulating signal to be used for operation of a PWM inverter wherein a modulating wave of a sinusoidal waveform corresponding to the desired AC output voltage of the inverter is sampled at selected periodical time intervals to obtain a level of the modulating wave at each sampling point and the interval is arithmetically determined between each sampling time point and a time point which appears between the sampling point and the next sampling point and at which time point a virtual triangular waveform, which has positive and negative peaks of a predetermined amplitude occurring alternately at the selected periodical time interval, takes the same level as the sampled level of the modulating wave. On the basis of the time interval, the PWM signal is produced.
    • 一种用于产生用于PWM逆变器的操作的脉宽调制信号的控制装置,其中以选定的周期时间间隔采样对应于逆变器的期望AC输出电压的正弦波形的调制波,以获得 在每个采样点处的调制波和间隔在每个采样时间点和出现在采样点和下一个采样点之间的时间点之间算术确定,并且在该时间点,具有正,负峰值的虚拟三角波形 在选定的周期时间间隔交替出现的预定幅度与调制波的采样电平相同。 基于时间间隔,产生PWM信号。
    • 7. 发明授权
    • Spinning machine with spindle motor control system
    • 纺纱机带主轴电机控制系统
    • US5906092A
    • 1999-05-25
    • US855891
    • 1997-05-12
    • Motonobu Hattori
    • Motonobu Hattori
    • D01H1/244D01H13/00
    • D01H1/244
    • The object of the invention is to provide a spinning machine which the manufacturing expenses and maintenance/checkout expenses are held down and the operation of the low voltage circuits is stabilized. In a spinning machine having a spindle motor control system, each three-phase power supply line is provided with a pair of conductive contacts electrically connected to at least two phases on the way thereof, and the pair of conductive contacts are structured to be separated when inserting an insulating unit therebetween and to come in contact with each other again when pulling out the insulating unit.
    • 本发明的目的是提供一种纺纱机,其制造成本和维护/结账费用被抑制,并且低压电路的操作稳定。 在具有主轴电动机控制系统的纺纱机中,每个三相电源线设置有一对导电触点,其电连接到至少两相的路上,并且一对导电触头被构造为在 在其间插入绝缘单元并且在拉出绝缘单元时再次彼此接触。
    • 9. 发明授权
    • Motor system for directly driving spindles of spinning machine
    • 直接驱动纺纱机主轴的电机系统
    • US06393816B1
    • 2002-05-28
    • US09936867
    • 2001-09-14
    • Motonobu Hattori
    • Motonobu Hattori
    • D01H1300
    • D01H1/16D01H1/244
    • A mounting of a motor system for directly driving spindles of a spinning machine, wherein individual motors are provided that are superior in insulation property, having a housing construction formed by electric insulation means, each power supply line branch in which the changing part of each power supply line is exposed is shifted in the direction of the length to provide a distance for insulation, the power supply lines being disposed close to each other to provide wiring systems of reduced size, which, together with the peripheral systems, are mounted in front of the housings of the individual motors; thus, the construction of the system can be made safe, small in size and simplified, having the effect of reducing the costs.
    • 一种用于直接驱动纺纱机的主轴的马达系统的安装,其中提供绝缘性能优异的各个马达,具有由电绝缘装置形成的壳体结构,每个电源线分支,每个电源的变化部分 供电线被暴露在长度方向上移动以提供绝缘距离,电源线彼此靠近设置,以提供尺寸减小的布线系统,其与外围系统一起安装在 各个电机的外壳; 因此,可以使系统的安装,尺寸小,简化,从而降低成本。