Switching power supply
    73.
    发明申请
    Switching power supply 失效
    开关电源

    公开(公告)号:US20080290846A1

    公开(公告)日:2008-11-27

    申请号:US12012059

    申请日:2008-01-30

    IPC分类号: H02M1/00

    摘要: A switching power supply capable of correcting a power factor without using a shunt resistor is provided. The switching power supply includes a rectifier for rectifying an AC power supply, boosting means including a power MOSFET for boosting an output of the rectifier, a smoothing capacitor for smoothing an output of the boosting means, voltage-dividing resistors for detecting a voltage between main terminals of the power MOSFET, a switch for selecting only the voltage by which the power MOSFET is in on-state from voltages detected by the voltage-dividing resistors, an amplifier for amplifying the voltage selected by the switch and outputting the same as a current corresponding value of a current flowing in the power MOSFET, voltage-dividing resistors for detecting the output voltage, and driving means which form a pulse signal based on the current corresponding value and the output voltage for driving the power MOSFET by the pulse signal.

    摘要翻译: 提供了能够在不使用分流电阻的情况下校正功率因数的开关电源。 开关电源包括用于整流交流电源的整流器,包括用于升压整流器的输出的功率MOSFET的升压装置,用于平滑升压装置的输出的平滑电容器,用于检测主电压之间的电压的分压电阻器 功率MOSFET的端子,用于仅选择功率MOSFET由分压电阻检测到的电压处于导通状态的电压的开关,用于放大由开关选择的电压并将其输出为电流的放大器 在功率MOSFET中流过的电流的对应值,用于检测输出电压的分压电阻,以及基于用于通过脉冲信号驱动功率MOSFET的电流对应值和输出电压形成脉冲信号的驱动装置。

    UNIDERECTIONAL DC-DC CONVERTER
    74.
    发明申请
    UNIDERECTIONAL DC-DC CONVERTER 失效
    独立DC-DC转换器

    公开(公告)号:US20070236966A1

    公开(公告)日:2007-10-11

    申请号:US11627393

    申请日:2007-01-26

    IPC分类号: H02M3/335

    CPC分类号: H02M3/158

    摘要: A unidirectional DC-DC converter which has a simple control circuit without using multiple insulated power supplies, uses an auxiliary inductor of a comparatively small capacitance, reduces the size and weight of the converter, and has a very great capacitance without switching of supply current.A unidirectional DC-DC converter equipped with main IGBT101 which supplies and shuts off current for first inductor 108a and diode 107 which discharges energy from main inductor 108a to an output, wherein the DC-DC converter is further equipped with auxiliary IGBT104 which applies current to back-to-back-connected diode 102 by using energy stored in auxiliary inductor 108b which is magnetically coupled with main inductor 108a. This applies current to the back-to-back-connected diode in a short period including a time period in which the first switching element is turned on and accomplishes ZVZCS.

    摘要翻译: 具有简单的控制电路而不使用多个绝缘电源的单向DC-DC转换器使用相对小的电容的辅助电感器,减小了转换器的尺寸和重量,并且具有非常大的电容而不需要切换电源电流。 配备有主IGBT101的单向DC-DC转换器,其向第一电感器108a和二极管107提供和切断电流,该二极管107将主电感器108a的能量放电到输出,其中DC-DC转换器还配备有辅助IGBT 104 其通过使用存储在与主电感器108a磁耦合的辅助电感器108b中的能量来将电流施加到背对背连接的二极管102。 这在短时间内将电流施加到背对背连接的二极管,包括第一开关元件接通并实现ZVZCS的时间段。

    Uninterruptible power system
    75.
    发明申请
    Uninterruptible power system 失效
    不间断电源系统

    公开(公告)号:US20060267410A1

    公开(公告)日:2006-11-30

    申请号:US11415417

    申请日:2006-05-02

    IPC分类号: H02J9/00 H02J7/00

    摘要: An uninterruptible power system for inputting an AC power, converting the AC power into a desired power, supplying the desired power to a load, and upon occurrence of an AC failure, converting a DC power from energy accumulation means into the desired power and supplying the desired power to the load, wherein the DC power from said energy accumulation means is passed through two serially connected boost means, and thereafter the power is converted into the desired power to be supplied to the load, wherein first boost means of the two serially connected boost means, which is nearer to the energy accumulation means, raises the DC electric power from said energy accumulation means to supply second boost means of the two serially connected boost means when supply of electric power is interrupted, and lowers inputted electric power for charging the electric accumulation means during an ordinary operation.

    摘要翻译: 一种用于输入AC电力的不间断电力系统,将AC电力转换成期望的电力,向负载提供期望的电力,并且在出现AC故障时,将来自能量积累装置的DC电力转换成期望的电力,并将 所述负载的期望功率,其中来自所述能量积蓄装置的直流电力通过两个串联连接的升压装置,此后,所述功率被转换成所需功率以提供给所述负载,其中所述两个串联连接的第一升压装置 更接近能量积蓄装置的升压装置,当电力供应中断时,从所述能量积蓄装置升高直流电力,供给两个串联连接的升压装置的第二升压装置,并降低输入电力 电力蓄积装置在正常操作期间。

    Mehotd for determining a maximum power point voltage of a fuel cell, as well as fuel cell control system and power controller used in the fuel cell control system
    76.
    发明申请
    Mehotd for determining a maximum power point voltage of a fuel cell, as well as fuel cell control system and power controller used in the fuel cell control system 审中-公开
    用于确定燃料电池的最大功率点电压的Mehotd,以及用于燃料电池控制系统中的燃料电池控制系统和功率控制器

    公开(公告)号:US20060222916A1

    公开(公告)日:2006-10-05

    申请号:US11354920

    申请日:2006-02-16

    IPC分类号: H01M8/04 G05D11/00

    摘要: A detection voltage, which is obtained by dividing the voltage of a fuel cell 1 by resistors, is compared with a first reference voltage Vref1 by a differential amplifier. The differential voltage is input to a control section. The control section performs PWM control for the circuit section according to the difference. The first reference voltage Vref1 is set according to the dividing ratio of the resistors, based on the output voltage when the fuel cell generates power at the maximum power point. To determine the output voltage for maximum power generation, a characteristic curve representing a current-voltage characteristic is approximated by an approximating line within a range excluding an area in which the output voltage changes abruptly when the output current is nearly zero, and an extrapolated voltage is obtained on the extension line of the approximating line at an output current of zero. Fifty percent of the extrapolated voltage is then determined as the output voltage when the fuel cell generates power at the maximum power point. Thus, a fuel cell control system that identifies a highly precise output voltage for power generation at a maximum power point and controls power so that the maximum power point is not exceeded could be provided.

    摘要翻译: 通过将电阻器将燃料电池1的电压分压而获得的检测电压通过差分放大器与第一基准电压Vref 1进行比较。 差分电压被输入到控制部分。 控制部根据差异对电路部进行PWM控制。 基于当燃料电池在最大功率点发电时的输出电压,根据电阻器的分压比设定第一基准电压Vref 1。 为了确定用于最大发电的输出电压,表示电流 - 电压特性的特性曲线在输出电压几乎为零时输出电压急剧变化的范围内的范围内的近似线近似,并且外推电压 在输出电流为零时在近似线的延长线上获得。 然后将50%的外推电压确定为当燃料电池在最大功率点发电时的输出电压。 因此,可以提供一种燃料电池控制系统,其识别用于在最大功率点发电的高精度输出电压并且控制功率以便不超过最大功率点。

    Equipment with a built-in fuel cell
    80.
    发明申请
    Equipment with a built-in fuel cell 失效
    设备内置燃料电池

    公开(公告)号:US20060035116A1

    公开(公告)日:2006-02-16

    申请号:US11204345

    申请日:2005-08-16

    IPC分类号: H01M16/00 H02J7/35

    摘要: In equipment with a built-in fuel cell, there are provided a plurality of secondary cells, and each of the secondary cells has a first state in which an electric power is supplied to a load within the equipment, and a second state in which the electric power that is supplied from the fuel cell is charged, and the first state and the second state is selectively used. The present invention can provide the fuel cell-carried equipment that stably operates due to a power system on which a fuel cell and plural secondary cells are mounted.

    摘要翻译: 在具有内置燃料电池的设备中,设置有多个二次电池,并且每个二次电池具有其中向设备内的负载供电的第一状态和第二状态,其中, 从燃料电池供给的电力被充电,并且选择性地使用第一状态和第二状态。 本发明可以提供由于燃料电池和多个二次电池被安装在其上的动力系统而稳定运行的燃料电池搬运设备。