Parallelized power supply system providing uninterrupted operation
    61.
    发明授权
    Parallelized power supply system providing uninterrupted operation 失效
    并联电源系统不间断运行

    公开(公告)号:US5638264A

    公开(公告)日:1997-06-10

    申请号:US544240

    申请日:1995-10-17

    IPC分类号: G05F1/577 H02J1/10 H02M7/155

    摘要: A parallelized power supply system including a plurality of switching power supplies each having a circuit for limiting rush current generated when a main switch is turned on. This system can be installed in an apparatus which requires the functions such as power uninterrupted operation and live wire insertion/dismount. Each switching power supply has another power supply for driving the rush current limiter circuit and a relay circuit for supplying relay driving current and making a connection of relay contacts after a predetermined time lapse after the operation start of the switching power supply. An a.c. power is supplied via the relay contacts to each switching power supply. The relay driving time set in the rush current limiter circuit is different for each switching power supply. Accordingly, concentration and excess of rush current when the relay is driven can be suppressed, and sparks at contact pins of a connector to be otherwise generated when the switching power supply is mounted on the connector, can be eliminated so that radiation noises and connector breakage can be avoided. Each of the switching power supplies connected in parallel has a current detecting resistor connected between the low voltage side of a load and the low voltage side of a voltage regulator d.c. output, and at least one operational amplifier for detecting a change in the d.c. output, the negative power supply terminal of the operational amplifier being connected to the current detecting resistor at its one end on the load side.

    摘要翻译: 一种并联电源系统,包括多个开关电源,每个开关电源具有用于限制当主开关导通时产生的冲击电流的电路。 该系统可以安装在需要诸如电源不间断操作和带电线插入/卸载等功能的设备中。 每个开关电源具有用于驱动冲击电流限制器电路的另一个电源和用于在开关电源的操作开始之后的预定时间经过之后提供继电器驱动电流和继电器触点的连接的继电器电路。 一个 电源通过继电器触点提供给每个开关电源。 在冲击电流限制电路中设置的继电器驱动时间对于每个开关电源是不同的。 因此,可以抑制继电器驱动时的集中和超过冲击电流,并且可以消除当开关电源安装在连接器上否则产生的连接器的接触引脚上的火花,使得辐射噪声和连接器断裂 可以避免。 每个并联的开关电源具有连接在负载的低电压侧和电压调节器d.c.的低压侧之间的电流检测电阻器。 输出,以及用于检测直流电的变化的至少一个运算放大器。 运算放大器的负电源端在负载侧的一端连接到电流检测电阻。

    Power supply control system
    62.
    发明授权
    Power supply control system 失效
    电源控制系统

    公开(公告)号:US5297015A

    公开(公告)日:1994-03-22

    申请号:US555025

    申请日:1990-07-20

    摘要: A power supply control system including a variable power converter for converting electric power from a power supply to a load into that of a specification required by the load in response to a power specification information source provided on the load side. With a change in the load, the information source also changes, thereby providing a flexible power supply control system capable of meeting different loads. For applications to a high power supply, the system comprises a plurality of variable power converters adapted to operate selectively in accordance with requisite power information sources provided in or on the side of a plurality of loads, thereby providing a system realizing a flexible power supply. For application to a low power supply, the system comprises a plug having a power specification information source and a socket having a variable power converter.

    摘要翻译: 一种电源控制系统,其包括用于响应于设置在负载侧的电力指定信息源将电力从电源转换为负载的可变功率转换器,用于负载所要求的规格。 随着负载的变化,信息源也发生变化,从而提供能够满足不同负载的灵活的电源控制系统。 对于高电源的应用,系统包括多个可变功率转换器,其适于根据在多个负载中或其侧面设置的必需功率信息源选择性地进行操作,从而提供实现柔性电源的系统。 为了适用于低电源,该系统包括具有电力指定信息源的插头和具有可变功率转换器的插座。

    Inverter circuit
    63.
    发明授权
    Inverter circuit 失效
    逆变电路

    公开(公告)号:US5280228A

    公开(公告)日:1994-01-18

    申请号:US672410

    申请日:1991-03-20

    CPC分类号: H02M7/53875 H02H7/1227

    摘要: A three-phase bridge inverter for controlling a motor with a variable speed includes a drive circuit therefor and an overcurrent protection circuit on one integrated chip. The inverter IC can be operated by directly inputting a direct current obtained by rectifying commercial 100 V. Thus, the inverter chip reduces the size and the weight of a system, improves the usability, lowers the cost thereof and permits mass production fabrication. Also, the life of the IC is increased by detecting current flowing through the inverter and the temperature of the chip and stopping the operation, when an abnormality is found.

    摘要翻译: 用于控制具有可变速度的电动机的三相桥式逆变器包括其驱动电路和一个集成芯片上的过电流保护电路。 逆变器IC可以通过直接输入通过整流商用100V获得的直流电而进行操作。因此,逆变器芯片减小了系统的尺寸和重量,提高了可用性,降低了成本并允许批量生产制造。 此外,当发现异常时,通过检测流过逆变器的电流和芯片的温度以及停止操作来增加IC的寿命。

    Driving circuit for a switching element including an improved power
supply arrangement
    65.
    发明授权
    Driving circuit for a switching element including an improved power supply arrangement 失效
    包括改进的电源装置的开关元件的驱动电路

    公开(公告)号:US5216349A

    公开(公告)日:1993-06-01

    申请号:US734127

    申请日:1991-07-25

    摘要: The switching of upper and lower switching elements is controlled by respective upper and lower arm driving circuits. Those switching elements are connected in series across a primary d.c. power source and their successive switching generates a drive voltage which is applied to a load. A secondary d.c. power source is connected to the lower arm driving circuit while the upper arm driving circuit is connected to a capacitor connected to the high potential side of the primary d.c. power source. The capacitor is charged from the secondary d.c. power source through a charging circuit. This driving arrangement is particularly applicable to multi-phase driving circuits.

    摘要翻译: 上下开关元件的切换由相应的上臂和下臂驱动电路控制。 那些开关元件串联连接在主要直流电源上。 电源及其连续切换产生施加到负载的驱动电压。 中学生 电源连接到下臂驱动电路,而上臂驱动电路连接到连接到初级直流电压的高电位侧的电容器。 能量源。 电容器从次级直流电充电。 电源通过充电电路。 该驱动装置特别适用于多相驱动电路。

    Gate circuit for thyristors
    66.
    发明授权
    Gate circuit for thyristors 失效
    晶闸管门电路

    公开(公告)号:US4417156A

    公开(公告)日:1983-11-22

    申请号:US238605

    申请日:1981-02-26

    IPC分类号: H02M1/08 H03K17/73 H03K17/72

    CPC分类号: H03K17/73 H02M1/08

    摘要: A gate circuit for a thyristor is disclosed which includes a power supply for feeding gate-on current through a gate and cathode of the thyristor, a switching circuit connected in series with the power supply to turn the gate-on current on or off, and a diode connected between a gate ignition signal input terminal of said switching circuit and the anode of said thyristor with the cathode of said diode being coupled to said anode of said thyristor and the anode of said diode coupled to said switching circuit.

    摘要翻译: 公开了一种用于晶闸管的栅极电路,其包括用于馈送通过晶闸管的栅极和阴极的栅极导通电流的电源,与电源串联连接的开关电路以打开或关闭导通电流,以及 连接在所述开关电路的栅极点火信号输入端和所述晶闸管的阳极之间的二极管与所述二极管的阴极耦合到所述晶闸管的所述阳极和连接到所述开关电路的所述二极管的阳极。