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    • 62. 发明授权
    • Power conversion system
    • 电力转换系统
    • US5177677A
    • 1993-01-05
    • US489324
    • 1990-03-06
    • Kiyoshi NakataAkira KimuraYouji TakahashiYoshio TsutsuiKiyoshi NakamuraAtsushi Abe
    • Kiyoshi NakataAkira KimuraYouji TakahashiYoshio TsutsuiKiyoshi NakamuraAtsushi Abe
    • H02J7/14H02M7/219
    • H02M7/219H02J7/1492Y02T10/92
    • A power conversion system is disclosed in which a direct current is taken out of an AC power supply of variable frequency and variable voltage through a PWM converter in such a manner that in a region of low source voltage, the converter input current is limited to a predetermined value to maximize the DC power taking the voltage drop of the power supply into consideration with the power factor of "1" of the power supply, and when the current reaches an allowable maximum, it is limited to that value. In a region of high source voltage, on the other hand, the quadrature component of the input voltage applied to the source voltage is controlled preferentially in a manner to control the converter input voltage below a predetermined value, thus making it possible to secure the maximum power available from the converter over the entire range of operation. If a battery is connected to the DC side, a cooperative operation is made possible while the battery is charged properly.
    • 公开了一种电力转换系统,其中通过PWM转换器从可变频率和可变电压的AC电源中取出直流电流,使得在低电源电压的区域中,转换器输入电流被限制为 在电源的功率因数为“1”的情况下考虑电源的电压降使DC直流功率最大化,并且当电流达到容许最大值时,限制为该值。 另一方面,在高电源电压的区域,以优先控制施加于源极电压的输入电压的正交分量,以便将转换器输入电压控制在预定值以下,从而可以确保最大值 在整个操作范围内可以从转换器获得电力。 如果电池连接到直流侧,则在电池正常充电时可以进行协作操作。
    • 65. 发明授权
    • Power supply system for linear motor
    • 线性电机电源系统
    • US4303870A
    • 1981-12-01
    • US64361
    • 1979-08-07
    • Kiyoshi NakamuraMasayoshi IsakaYoshimi KurotakiYutaka Suzuki
    • Kiyoshi NakamuraMasayoshi IsakaYoshimi KurotakiYutaka Suzuki
    • B60L13/03B60L13/00B60L15/00H02P25/06H02K41/00
    • B60L15/005B60L13/006B60L2200/26Y02T10/645
    • A power supply system for a linear motor comprising a plurality of driving coils disposed along the track for a running body for generating a shifting magnetic field to drive the running body, power converter means for feeding the plurality of driving coils with electrical energy, a plurality of switches responsive to the movement of the running body for selectively electrically connecting each of the driving coils to the power converter means, a first reactive power controller continuously electrically connected to the power input side of the power converter means, and a second reactive power controller selectively electrically connected to the power input side of the power converter means in accordance with the movement of the running body, whereby the steady reactive-power is compensated for by the first reactive power controller and the reactive power which varies with the movement of the running body is compensated for by the second reactive power controller.
    • 一种用于线性电动机的电源系统,包括沿轨道设置的用于产生移动磁场以驱动行驶体的多个驱动线圈,用于将多个驱动线圈馈送到电能的功率转换器装置,多个 响应于运行体的运动的开关,用于选择性地将每个驱动线圈电连接到功率转换器装置;连续电连接到功率转换器装置的电力输入侧的第一无功功率控制器和第二无功功率控制器 根据运行体的运动选择性地电连接到功率转换器装置的电力输入侧,由此第一无功功率控制器补偿稳定的无功功率,随着运行中的运动而变化的无功功率 身体被第二无功功率控制器补偿。