DC-DC switching power supply with power factor correction
    1.
    发明授权
    DC-DC switching power supply with power factor correction 有权
    DC-DC开关电源,功率因数校正

    公开(公告)号:US08274800B2

    公开(公告)日:2012-09-25

    申请号:US12647562

    申请日:2009-12-28

    IPC分类号: H02M3/335

    摘要: A digital signal processing circuit which performs average current control is disposed on a secondary side of a transformer of an isolated DC-DC converter, and a switching control signal output from the digital signal processing circuit is transmitted to a switching element included in a power factor correction converter through an isolated drive circuit. The digital signal processing circuit obtains an average value of currents supplied to an inductor in accordance with a voltage output from a bias winding of the inductor or an output from a secondary side of a current transformer which detects a drain current of the switching element. Furthermore, the average value of the currents corresponds to a waveform (full-wave rectification sine wave) of an input voltage Vi.

    摘要翻译: 执行平均电流控制的数字信号处理电路设置在隔离DC-DC转换器的变压器的次级侧,并且从数字信号处理电路输出的开关控制信号被发送到功率因数中包括的开关元件 校正转换器通过隔离驱动电路。 数字信号处理电路根据从电感器的偏置绕组输出的电压或检测开关元件的漏极电流的电流互感器的次级侧的输出,获得提供给电感器的电流的平均值。 此外,电流的平均值对应于输入电压Vi的波形(全波整流正弦波)。

    Power factor correction converter
    2.
    发明授权
    Power factor correction converter 有权
    功率因数校正转换器

    公开(公告)号:US07919950B2

    公开(公告)日:2011-04-05

    申请号:US12652103

    申请日:2010-01-05

    IPC分类号: G05F1/70

    摘要: A power factor correction converter includes a diode bridge arranged to perform full-wave rectification on an AC input power supply, a switching element arranged to perform switching on an output voltage thereof, an inductor arranged to pass a current interrupted by the switching element and to accumulate and emit excitation energy, a diode, and a smoothing capacitor defining a step-up chopper circuit. A digital signal processing circuit detects a phase of an input voltage, and a switching frequency of the switching element is modulated in accordance with the phase. Accordingly, the switching frequency can be appropriately modulated without depending on an input voltage, so that a wide range of input voltages can be accepted while suppressing EMI noise with a peak generated in the switching frequency and higher-order frequency components thereof.

    摘要翻译: 功率因数校正转换器包括:二极管电桥,被配置为在AC输入电源上执行全波整流;开关元件,被布置成对其输出电压进行开关;电感器,被布置成使由开关元件中断的电流通过, 累积并发射激发能量,二极管和限定升压斩波电路的平滑电容器。 数字信号处理电路检测输入电压的相位,并根据该相位调制开关元件的开关频率。 因此,可以适当地调制开关频率而不依赖于输入电压,从而可以在以开关频率及其高阶频率分量产生的峰值抑制EMI噪声的同时接受宽范围的输入电压。

    Switching power supply apparatus including a plurality of switching elements
    3.
    发明授权
    Switching power supply apparatus including a plurality of switching elements 有权
    包括多个开关元件的开关电源装置

    公开(公告)号:US08625311B2

    公开(公告)日:2014-01-07

    申请号:US13272388

    申请日:2011-10-13

    IPC分类号: H02M3/335 H02M3/137 H02M1/38

    CPC分类号: H02M3/3376 H02M1/38

    摘要: In a switching power supply apparatus, a comparator outputs a first determination criterion signal based on a saw-tooth wave signal whose level fluctuates with a constant period and a detection voltage signal. An inverter subjects the first determination criterion signal to reverse processing, and outputs a second determination criterion signal. The comparator outputs a first switching judgment-use signal from a monitor signal and a threshold value, and the comparator outputs a second switching judgment-use signal from the monitor signal and the threshold value. An AND circuit outputs the first switching control signal from the first determination criterion signal and the first switching judgment-use signal, and the AND circuit outputs the second switching control signal from the second determination criterion signal and the second switching judgment-use signal.

    摘要翻译: 在开关电源装置中,比较器基于其电平以恒定周期波动的锯齿波信号和检测电压信号输出第一判定基准信号。 逆变器使第一确定标准信号反转处理,并输出第二确定标​​准信号。 比较器从监视信号和阈值输出第一切换判断用信号,比较器从监视信号和阈值输出第二切换判断用信号。 AND电路从第一判定基准信号和第一开关判断用信号输出第一开关控制信号,AND电路从第二判定基准信号和第二开关判断用信号输出第二开关控制信号。

    Power factor correction converter
    5.
    发明授权
    Power factor correction converter 有权
    功率因数校正转换器

    公开(公告)号:US08228696B2

    公开(公告)日:2012-07-24

    申请号:US13106908

    申请日:2011-05-13

    申请人: Yoshiyuki Uno

    发明人: Yoshiyuki Uno

    IPC分类号: G05F1/70

    摘要: A PFC converter that rapidly and highly accurately detects current passing through an inductor so as to properly improve harmonics and the power factor as well as to correctly detect the operation state. In the PFC converter, a first current value is obtained by performing sampling at the middle portion of the on-period of a switching element, and a second current value is obtained by performing sampling at the middle portion of the off-period thereof. If the first current value and the second current value are equal or substantially equal to each other, then it is determined that the operation state is a continuous current mode, and if the first current value and the second current value are not equal or substantially equal to each other, then it is determined that the operation state is a discontinuous current mode.

    摘要翻译: 一种PFC转换器,可快速,高精度地检测电流通过电感器,以适当地改善谐波和功率因数,并正确检测运行状态。 在PFC转换器中,通过在开关元件的接通周期的中间部分进行采样来获得第一电流值,并且通过在其关闭周期的中间部分进行采样来获得第二电流值。 如果第一电流值和第二电流值相等或基本相等,则确定运行状态是连续电流模式,如果第一电流值和第二电流值不相等或基本相等 确定操作状态为不连续电流模式。

    Method and apparatus for regenerating activated carbon
    6.
    发明授权
    Method and apparatus for regenerating activated carbon 失效
    用于再生活性炭的方法和装置

    公开(公告)号:US4030876A

    公开(公告)日:1977-06-21

    申请号:US585458

    申请日:1975-06-10

    摘要: A method in which activated carbon having a bulk density of at least 0.35, a particle size of 5 to 40 mesh and a water content of 50 to 120% is regenerated by being passed successively through drying, burning and reviving treatment zones of a vertical columnar furnace, which zones are maintained within temperature gradients such as to prevent explosion and oxidation or destruction of the carbon due to overheating while the carbon descends through the zones and is heated by a high temperature combustion gas flowing upwardly through the treatment zones at a rate not exceeding the minimum rate of fluidization of the descending carbon.The regenerating apparatus or furnace has gas burners mounted thereon to deliver combustion gas tangentially to a header and then to distributing ports arranged circumferentially around and internally of a columnar bed of carbon being regenerated to provide uniform temperature distribution across the bed. In an alternate construction, the columnar bed is annular, headers are provided exteriorly and interiorly of the bed, and distribution ports conduct the combustion gas through the inner and outer walls defining the annular bed.

    摘要翻译: 堆积密度为0.35以上,粒径为5〜40目,含水率为50〜120%的活性炭通过依次通过垂直柱状物的干燥,燃烧和复原处理区而再生 炉子,哪些区域保持在温度梯度内,以防止在碳下降通过区域时由于过热而引起的碳的爆炸和氧化或破坏,并且通过高温燃烧气体以向上流过处理区域的速率加热,速率不是 超过下降碳的最低流化速率。

    PFC converter using a predetermined value that varies in synchronization with a phase of the input voltage
    7.
    发明授权
    PFC converter using a predetermined value that varies in synchronization with a phase of the input voltage 有权
    PFC转换器使用与输入电压的相位同步变化的预定值

    公开(公告)号:US08508195B2

    公开(公告)日:2013-08-13

    申请号:US13406602

    申请日:2012-02-28

    申请人: Yoshiyuki Uno

    发明人: Yoshiyuki Uno

    IPC分类号: G05F1/656 G05F1/613

    摘要: A PFC converter that prevents and reduces switching losses by controlling ripple of inductor current and enables application for high power usage, includes a switching device that is turned off when an inductor current flowing through an inductor reaches a first threshold value, and turned on when the inductor current reaches a second threshold value. A switching control circuit sets a reference value of the inductor current using results from an input voltage detection circuit and an output voltage detection circuit. The first threshold value is produced by adding a predetermined value to the reference value, and the second threshold value is produced by subtracting the predetermined value from the reference value.

    摘要翻译: PFC转换器通过控制电感电流的波纹来防止和减少开关损耗,并且可以应用于高功率使用,包括当电流流过电感器的电感器电流达到第一阈值时关闭的开关器件,当 电感电流达到第二个阈值。 开关控制电路使用来自输入电压检测电路和输出电压检测电路的结果来设定电感电流的基准值。 第一阈值是通过将预定值加到参考值而产生的,而第二阈值是通过从参考值中减去预定值来产生的。

    Power factor correction converter including input current detecting circuit
    8.
    发明授权
    Power factor correction converter including input current detecting circuit 有权
    功率因数校正转换器包括输入电流检测电路

    公开(公告)号:US08395366B2

    公开(公告)日:2013-03-12

    申请号:US13110094

    申请日:2011-05-18

    申请人: Yoshiyuki Uno

    发明人: Yoshiyuki Uno

    摘要: A low-cost PFC converter capable of detecting an inductor current including a DC component and performing appropriate correction of a power factor with low loss includes a diode bridge that rectifies an AC voltage input from an AC input power supply Vac, a series circuit including an inductor and a switching element, a rectifying and smoothing circuit that is connected in parallel to the switching element and that includes a diode and a smoothing capacitor, and a digital signal processing circuit that performs on/off control on the switching element so that an input current input from the AC input power supply Vac has a similar waveform with respect to an AC voltage. A current flowing through the inductor during an off period of the switching element is detected using a current detecting resistor, and a decreased voltage of the current detecting resistor is sampled at the middle of the off period of the switching element, thereby detecting an average value of the input current.

    摘要翻译: 能够检测包括DC分量的电感电流并且以低损耗执行功率因数的适当校正的低成本PFC转换器包括对从AC输入电源Vac输入的AC电压进行整流的二极管电桥,串联电路包括 电感器和开关元件,与开关元件并联连接并且包括二极管和平滑电容器的整流和平滑电路以及对开关元件执行开/关控制的数字信号处理电路,使得输入 来自交流输入电源Vac的电流输入具有与AC电压相似的波形。 使用电流检测电阻器检测在开关元件的断开期间流过电感器的电流,并且在开关元件的截止期间的中间对电流检测电阻器的电压进行采样,从而检测平均值 的输入电流。

    Method for surface treating a die by electron beam irradiation and a die treated thereby
    9.
    发明授权
    Method for surface treating a die by electron beam irradiation and a die treated thereby 失效
    通过电子束照射对管芯进行表面处理的方法和由此处理的管芯

    公开(公告)号:US07049539B2

    公开(公告)日:2006-05-23

    申请号:US10400602

    申请日:2003-03-27

    IPC分类号: B23P9/00

    CPC分类号: G21K5/04

    摘要: Method for surface treating a die made of metal in which a low energy, pulsed electron beam, which does not scatter, performs a treatment over a wide area due to presence of anode plasma in a chamber in which the electron beam is formed to smooth and gloss a surface of the die and increase a surface hardness and corrosion resistance of the die. The irradiation may be performed with an energy density not less than 1 J/cm2 per pulse, at least 5 pulse irradiations and a pulse duration of at least 1 μs. A die subjected to the surface treatment method exhibits improved surface smoothness and glossiness, as well as high corrosion resistance.

    摘要翻译: 用于表面处理由金属制成的管芯的方法,其中不散射的低能量的脉冲电子束由于在其中形成电子束平滑的室中存在阳极等离子体而在广泛的区域上进行处理, 光泽模具的表面并增加模具的表面硬度和耐腐蚀性。 照射可以以每脉冲1J / cm 2以上的能量密度进行,至少5次脉冲照射和至少1μs的脉冲持续时间。 经受表面处理方法的模具表现​​出改善的表面光滑度和光泽度以及高耐腐蚀性。

    Apparatus for regenerating activated carbon
    10.
    发明授权
    Apparatus for regenerating activated carbon 失效
    用于再生活性炭的装置

    公开(公告)号:US4147504A

    公开(公告)日:1979-04-03

    申请号:US768969

    申请日:1977-02-16

    摘要: The regenerating apparatus or furnace has gas burners mounted thereon to deliver combustion gas tangentially to a header and thence to distributing ports arranged circumferentially around and internally of a columnar bed of carbon being regenerated to provide uniform temperature distribution across the bed. In an alternate construction, the columnar bed is annular, headers are provided exteriorly and interiorly of the bed, and distribution ports conduct the combustion gas through the inner and outer walls defining the annular bed.

    摘要翻译: 再生设备或炉具有安装在其上的气体燃烧器,以将燃烧气体切向地传送到集管,并且从而分配端口沿圆周方向排列成圆柱形碳再生床,以提供均匀的温度分布。 在替代结构中,柱状床是环形的,集管设置在床的外部和内部,并且分配端口通过限定环形床的内壁和外壁引导燃烧气体。