Control apparatus for AC motors
    3.
    发明授权
    Control apparatus for AC motors 失效
    交流电机控制装置

    公开(公告)号:US4516065A

    公开(公告)日:1985-05-07

    申请号:US530101

    申请日:1983-09-07

    IPC分类号: H02P27/04 H02P5/40

    摘要: When driving an AC motor with a PWM inverter, the width of a speed command signal is modulated by a carrier to produce width modulated pulses for controlling main switching elements. The width modulated pulses are liable to be attended with impulses which cause magnetic vibrations in the AC motor, resulting in noises. The generation of these impulses can be suppressed by changing the amplification factor of an amplifier for the speed command signal or the amplitude of the carrier on the basis of the rate of change of the speed command signal. Noises which would be attendant on low speed running of the AC motor can be reduced by changing the amplification factor of the amplifier and the amplitude of the carrier on the basis of detected frequency of the speed command signal or revolution of the AC motor during low speed running.

    摘要翻译: 当用PWM逆变器驱动交流电动机时,速度指令信号的宽度被载波调制以产生用于控制主开关元件的宽度调制脉冲。 宽度调制脉冲容易受到在AC电动机中引起磁振动的脉冲的影响,导致噪声。 可以通过根据速度指令信号的变化率改变速度指令信号的放大器的放大系数或载波的振幅来抑制这些脉冲的产生。 可以通过根据速度指令信号的检测频率或低速时交流电动机的转速来改变放大器的放大系数和载波幅度来减少交流电动机的低速行驶的噪声。 跑步

    Servo press apparatus driven by multiple motors
    6.
    发明授权
    Servo press apparatus driven by multiple motors 有权
    伺服压力机由多台电机驱动

    公开(公告)号:US09126378B2

    公开(公告)日:2015-09-08

    申请号:US13042752

    申请日:2011-03-08

    IPC分类号: B30B1/06 B30B1/26

    CPC分类号: B30B1/266

    摘要: This invention is intended to provide a large-capacity servo press apparatus driven by multiple motors, the servo press apparatus enabling a drive at a high efficiency and with reduced torque pulsations in a simple structure. The disclosed servo press comprises a slide that is moved up and down by a plurality of crank structures (including eccentric rings and connecting rods), main gears that drive the crank structures, a plurality of drive gears interlinked with the main gears directly or indirectly, intermediate gears interlinked with the main gears directly or indirectly, and servo motor sets connected to drive shafts to drive the drive gears. In each of the servo motor sets, a plurality of servo motors are directly connected to each servo motor shaft.

    摘要翻译: 本发明旨在提供一种由多个电动机驱动的大容量伺服压力装置,该伺服压力装置能够以简单的结构实现高效率的驱动和减小的转矩脉动。 所公开的伺服压力机包括由多个曲柄结构(包括偏心环和连杆)上升和下降的滑块,驱动曲柄结构的主齿轮,直接或间接地与主齿轮相互连接的多个驱动齿轮, 直接或间接与主齿轮相互连接的中间齿轮,以及连接到驱动轴以驱动驱动齿轮的伺服电动机组。 在每个伺服电动机组中,多个伺服电动机直接连接到每个伺服电动机轴。

    PERMANENT MAGNET MOTOR
    8.
    发明申请
    PERMANENT MAGNET MOTOR 审中-公开
    永磁电机

    公开(公告)号:US20150091406A1

    公开(公告)日:2015-04-02

    申请号:US14388612

    申请日:2012-03-30

    IPC分类号: H02K1/27

    摘要: A permanent magnet motor includes a P-pole-implanted permanent magnet rotator containing a ferrite magnet in a laminated silicon steel sheet, wherein, at one pole, a U-shaped permanent magnet comprising three parts, and, at the outer periphery of the U-shaped magnet, one outer-periphery permanent magnet disposed longitudinally in the peripheral direction are provided to generate permanent magnet torque. At one pole, the permanent magnet rotator generates reluctance torque using two salient poles formed between the U-shaped permanent magnet and the outer-periphery permanent magnet. One central salient pole is formed between the adjacent poles. A stator comprises an M-phase stator winding that is a distributed winding, and a stator core having Ns slots. The ratio of Ns/P/M is a common fraction. When the width of the center salient pole is set to τcp and the slot pitch of the stator core is set to τs, τcp is smaller than τs.

    摘要翻译: 一种永磁电动机包括:在层叠硅钢板中含有铁氧体磁体的P极注入型永久磁铁转子,其中,在一极处包括三部分的U形永久磁铁,并且在U的外周 为了产生永久磁铁转矩,设置有沿圆周方向纵向配置的一个外周永久磁铁。 在一极处,永久磁铁转子使用形成在U形永磁体和外周永磁体之间的两个凸极产生磁阻转矩。 在相邻的极之间形成一个中心凸极。 定子包括作为分布绕组的M相定子绕组和具有Ns个槽的定子铁芯。 Ns / P / M的比例是常见的分数。 当中心凸极的宽度设定为τcp,定子铁芯的槽间距设定为τs时,τcp小于τs。

    SULFIDE-BASED SOLID BATTERY
    9.
    发明申请
    SULFIDE-BASED SOLID BATTERY 审中-公开
    基于硫化物的固体电池

    公开(公告)号:US20140154584A1

    公开(公告)日:2014-06-05

    申请号:US14236798

    申请日:2012-07-27

    IPC分类号: H01M10/0562 H01M10/05

    摘要: An object of the present invention is to provide a sulfide-based solid battery which has high charge-discharge capacity especially under high current density conditions. Disclosed is a sulfide-based solid battery including a positive electrode, a negative electrode and a sulfide-based solid electrolyte layer, the sulfide-based solid electrolyte layer being present between the positive electrode and the negative electrode, wherein the negative electrode includes at least a negative electrode active material layer; wherein the negative electrode active material layer includes negative electrode active material fine particles and sulfide-based solid electrolyte fine particles; and wherein the ratio of average particle diameter ra of the negative electrode active material fine particles to average particle diameter rs of the sulfide-based solid electrolyte fine particles (ra/rs) is 2.0 or more.

    摘要翻译: 本发明的目的是提供一种具有高充电放电容量的硫化物类固体电池,特别是在高电流密度条件下。 公开了一种硫化物系固体电池,其包含正极,负极和硫化物系固体电解质层,硫化物系固体电解质层存在于正极和负极之间,其中负极至少包括 负极活性物质层; 其中所述负极活性物质层包括负极活性物质微粒和硫化物系固体电解质微粒; 并且其中负极活性物质微粒的平均粒径ra与硫化物系固体电解质微粒的平均粒径rs的比(ra / rs)为2.0以上。

    Battery and battery system
    10.
    发明授权
    Battery and battery system 有权
    电池和电池系统

    公开(公告)号:US08679664B2

    公开(公告)日:2014-03-25

    申请号:US12682968

    申请日:2009-11-04

    摘要: The present invention is a battery comprising: a power section containing a sulfur-based material; a distinguishing section which discolors by chemical reaction with hydrogen sulfide; and an exterior body incorporating the power section and the distinguishing section, the distinguishing section being observable from outside the exterior body. By checking discoloration of the distinguishing section or the distinguishing means, it is possible to easily detect the presence or absence of hydrogen sulfide in the battery and then judge deterioration of the battery with non-destructive inspection.

    摘要翻译: 本发明是一种电池,包括:含有硫基材料的动力部分; 通过与硫化氢的化学反应而变色的区别部分; 以及包括所述动力部分和所述识别部分的外部主体,所述识别部分可从外部主体的外部观察。 通过检查识别部分或识别装置的变色,可以容易地检测电池中硫化氢的存在或不存在,然后用非破坏性检查来判断电池的劣化。