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    • 1. 发明授权
    • Power converter
    • 电源转换器
    • US5608614A
    • 1997-03-04
    • US280552
    • 1994-07-26
    • Masahito OhnishiShozo KataokaTakashi KandaTakashi YamasakiKazuo Yoshida
    • Masahito OhnishiShozo KataokaTakashi KandaTakashi YamasakiKazuo Yoshida
    • H02J1/00H02M1/42H02M3/00H02M3/07H02M7/06H02M3/18
    • H02M1/4208H02M3/07Y02B70/126
    • A power converter has two switched capacitor circuits each including at least a plurality of sets of capacitors and switching elements, first of which circuits is provided for supplying a DC power to a load while second of which accumulates a power in a period receiving a higher input voltage, and the first switched capacitor circuit being made to receive, in a period receiving a lower input voltage, a power supplied from a DC power source and also the power supplied from the second switched capacitor circuit for supplying to the load the DC power of a constant voltage, in which an input current collectively taken up by the two switched capacitor circuits is made similar in the waveform to the input voltage to eliminate any harmonics distortion of the current drawn from the source, for attaining the supply of the DC power of the constant voltage to the load, whereby the power converter is rendered not to require any large inductor to be capable of being minimized in size and restraining any noise radiation from occurring.
    • 功率转换器具有两个开关电容器电路,每个开关电容器电路至少包括多组电容器和开关元件,其中首先提供用于向负载提供DC电力的电路,其中第二个电容器在接收较高输入的时段内积累功率 电压,并且第一开关电容器电路在接收较低输入电压的时间段内接收从直流电源提供的电力,以及从第二开关电容器电路提供的电力,以向负载提供直流电力 恒定电压,其中由两个开关电容器电路共同占据的输入电流在波形中与输入电压相似,以消除从源极吸取的电流的任何谐波失真,以获得 对负载的恒定电压,从而使得功率转换器不需要任何大的电感器能够在尺寸上最小化并限制 g发生任何噪音辐射。
    • 4. 发明授权
    • Power source device
    • 电源设备
    • US06324078B1
    • 2001-11-27
    • US09694012
    • 2000-10-23
    • Masahiro NaruoTakashi KandaMasahito OhnishiKazuhiro HoriKazuo Yoshida
    • Masahiro NaruoTakashi KandaMasahito OhnishiKazuhiro HoriKazuo Yoshida
    • H02M3335
    • H02M7/53871H05B41/2828H05B41/3927
    • A power source device includes a control circuit which controls switching elements in full-bridge arrangement so as, in decreasing an output to a load, to substantially equalize ON timing of one of two switching elements at diagonal position to the other of them with ON period of the one switching element shortened, that is, with ON duty ratio of the one switching element decreased. Switching operation of the elements in this event is not made to be in the hard switching operation, and a range in which the output to load can be controlled without increasing any stress or noise is thereby broadened, whereby it is enabled to minimize varying width of switching frequency and to attain a wide range control of the output to load without causing any one of the switching elements to be in the hard switching operation.
    • 电源装置包括控制电路,其控制全桥布置中的开关元件,以便在减小负载的输出时,使开关元件的对角位置之一的开启元件的导通时间基本上均等于导通时间段 一个开关元件缩短,即一个开关元件的导通占空比降低。 在这种情况下,元件的开关操作不进行硬切换操作,并且可以在不增加任何应力或噪声的情况下控制负载输出的范围变宽,从而可以将变化的宽度最小化 开关频率,并且能够实现对负载输出的宽范围控制,而不会使任何一个开关元件处于硬开关操作。
    • 7. 发明授权
    • Discharge lamp lighting device
    • 放电灯照明装置
    • US06246181B1
    • 2001-06-12
    • US09507690
    • 2000-02-22
    • Masahiro NaruoMasahito OhnishiKazuhiro HoriTakashi Kanda
    • Masahiro NaruoMasahito OhnishiKazuhiro HoriTakashi Kanda
    • H05B3700
    • H05B41/28
    • A discharge lamp lighting device includes a rectifier, a first diode connected at the anode in forward direction to a positive polarity output terminal of the rectifier, a smoothing capacitor connected between the cathode of the first diode and a negative polarity output terminal of the rectifier, a second diode connected at the anode in forward direction to the cathod of the first diode, a pair of switching elements connected in series between the cathode of the second diode and the negative polarity output terminal of the rectifier, a first capacitor connected in parallel to one of the first diode and the rectifier, a second capacitor connected in parallel to the second diode, and a control circuit for controlling ON/OFF operation of these switching elements, and a transformer having a primary winding n11 connected between a junction point of the pair of switching elements and one of output terminals of the rectifier and a secondary winding connected to a load circuit including a discharge lamp, and their arrangement can reduce peak factor of currents flowing to the load circuit and any loss occurring at the switching elements.
    • 一种放电灯点亮装置,包括整流器,正极连接到整流器的正极性输出端的第一二极管,连接在第一二极管的阴极与整流器的负极性输出端子之间的平滑电容器, 在正极连接到第一二极管的阴极的第二二极管,串联连接在第二二极管的阴极和整流器的负极性输出端之间的一对开关元件,第一电容器并联连接到 第一二极管和整流器之一,与第二二极管并联连接的第二电容器,以及用于控制这些开关元件的导通/截止操作的控制电路,以及具有初级绕组n11的变压器,其连接在 一对开关元件和整流器的一个输出端子和连接到负载电路的次级绕组,该负载电路包括: 充电灯及其布置可以减少流向负载电路的电流的峰值因数以及在开关元件处发生的任何损耗。
    • 10. 发明授权
    • Apparatus for operating discharge lamps
    • 用于操作放电灯的装置
    • US5444310A
    • 1995-08-22
    • US272614
    • 1994-07-11
    • Shozo KataokaMasahito Ohnishi
    • Shozo KataokaMasahito Ohnishi
    • H02M3/07H05B41/282H05B37/00H05B39/00
    • H02M3/07H05B41/282Y02B20/183Y10T307/826
    • An apparatus for operating discharge lamps with a stable electric current supply and minimal dimensional area requirements. The apparatus includes an input power source coupled across a capacitor, establishing a first loop circuit. A discharge lamp may also be connected across the capacitor, thereby forming a second loop circuit. A first switch repeatedly turns ON and OFF, making and breaking the first loop circuit at a first frequency, and thereby charges the capacitor. A second switch repeatedly turns ON and OFF, making and breaking the second loop circuit at a second frequency, and thereby discharges the capacitor through the discharge lamp. A control mechanism controls the first and second switches for supplying a predetermined current to the discharge lamp for flickerless operation.
    • 用于操作具有稳定电流供应和最小尺寸面积要求的放电灯的装置。 该装置包括耦合在电容器两端的输入电源,建立第一回路电路。 放电灯也可以连接在电容器两端,从而形成第二环路。 第一开关重复地接通和断开,使第一环路以第一频率断开,从而对电容器充电。 第二开关重复地接通和断开,使第二环路以第二频率断开,从而通过放电灯放电电容器。 控制机构控制用于向放电灯提供预定电流的第一和第二开关用于无闪烁操作。