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152 条记录 (耗时 0.016 秒)

    RESONANT POWER CONVERTER
    4.
    发明公开
    RESONANT POWER CONVERTER 审中-公开
    谐振功率转换器

    公开(公告)号：EP3179622A1

    公开(公告)日：2017-06-14

    申请号：EP15198430.9

    申请日：2015-12-08

    申请人： ABB Technology AG

    发明人： Canales, Francisco ,  Ortiz, Gabriel ,  Bishnoi, Hemant ,  Alvarez, Silverio

    IPC分类号： H02M3/338 ,  H02M1/32

    CPC分类号： H02M3/338 ,  H02M2001/325

    摘要： The present invention is concerned with resonant power converter operation during a transient overcurrent condition. According to the invention, the resonant power converter is provided with a damping resistor (61) to be connected in parallel to a capacitor (31) of a resonant circuit (30) of the resonant power converter (1) in case of a contingency condition. The damping resistor (61) results in a damping of the resonant circuit and in a reduction of peak and turn-off currents in the power semiconductor switches (S1, S2) of the resonant power converter at loads exceeding a rated load of the resonant power converter and occurring in case of a contingency condition, specifically during a transient overcurrent condition. The resonant power converter (1) therefore may continue operating under contingency conditions. Tripping or otherwise proactively inactivating the resonant power converter may be avoided or at least delayed until normal converter operation is resumed as a result of a contingency condition root cause elimination, specifically as a result of an automatic fault clearance by some converter-external load protections means.

    摘要翻译： 本发明涉及在瞬态过电流状况期间的谐振功率变换器操作。 根据本发明，谐振功率变换器设置有阻尼电阻器（61），以在偶然条件的情况下与谐振功率变换器（1）的谐振电路（30）的电容器（31）并联连接 。 阻尼电阻器（61）导致谐振电路的阻尼并且在谐振功率变换器的功率半导体开关（S1，S2）中在超过谐振功率的额定负载的负载处减小峰值电流和关断电流 并在发生意外情况时发生，特别是在瞬态过电流情况下。 谐振功率变换器（1）因此可以在意外情况下继续工作。 可以避免或至少延迟跳闸或以其他方式主动地使谐振功率转换器失活，直到由于应急条件根本原因消除而恢复正常的转换器操作，特别是由于一些转换器外部负载保护装置 。

    Frequency limitation method with time hysteresis used in quasi-resonant control
    6.
    发明公开
    Frequency limitation method with time hysteresis used in quasi-resonant control 有权
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    公开(公告)号：EP2264881A2

    公开(公告)日：2010-12-22

    申请号：EP10251091.4

    申请日：2010-06-16

    申请人： Monolithic Power Systems, Inc.

    发明人： Zhang, Junming ,  Ren, Yuancheng ,  Hu, Jin ,  Lu, Huanyu ,  Shi, Yang

    IPC分类号： H02M3/335

    CPC分类号： H02M3/338 ,  H02M3/1563 ,  Y02B70/1425 ,  Y02B70/1433

    摘要： A frequency limitation method used in quasi-resonant control of a switching regulator is disclosed. The switching frequency is limited through setting a minimum time limit, such as a minimum switching period or a minimum OFF time. The minimum time limit may be a first time limit or a second time limit. The minimum time limit is changed into another value if the minimum voltage point approaches the minimum time limit point, so as to eliminate the audible noise.

    摘要翻译： 公开了一种用于开关调节器的准谐振控制的频率限制方法。 通过设置最小时间限制（如最小切换周期或最小关闭时间）来限制开关频率。 最小时限可以是第一时限或第二时限。 如果最小电压点接近最小时限，则将最小时间限制改为另一个值，以消除可听见的噪声。

    Non-contact electrical power transmission system having function of making load voltage constant
    8.
    发明授权
    Non-contact electrical power transmission system having function of making load voltage constant 有权
    触点电力传输系统的功能保持负载电压

    公开(公告)号：EP1469584B1

    公开(公告)日：2009-08-05

    申请号：EP04014754.8

    申请日：2001-02-21

    申请人： Panasonic Electric Works Co., Ltd.

    发明人： Abe, Hideaki

    IPC分类号： H02M3/335 ,  H02M3/337 ,  H02M3/338

    CPC分类号： H02M1/096 ,  H02J7/025 ,  H02J50/10 ,  H02M3/22 ,  H02M3/335 ,  H02M3/337 ,  H02M3/338

    摘要： This system includes a transformer separable/detachable between a primary winding and a secondary winding, and a capacitor connected parallel to the secondary winding of the above-mentioned transformer, and supplies a high-frequency AC voltage to the primary winding of the transformer to generate an induced voltage in the secondary winding of the transformer, and transmits the electrical power to a load in non-contact manner. The voltage supplied to the load is constant and the flowing current varies. The power may be supplied to a different kind of a load with a constant voltage. Taking as a first condition a fact that at the time of a maximum load, the time of the reversal of the voltage polarity of the above-mentioned primary winding substantially coincides with the time when an oscillating voltage of the above-mentioned capacitor reaches a maximum or minimum value, and taking as a second condition a fact that at the time of a minimum load, the time of the reversal of the voltage polarity of the above-mentioned primary winding substantially coincides with the time when the oscillating voltage of the above-mentioned capacitor completes one cycle, the above-mentioned capacitor is set so that the capacity value satisfies simultaneously the above-mentioned first and second conditions. This allows the load voltage to be made constant in a load current range from a minimum to a maximum without requiring a feedback circuit.

    DEVICE AND METHOD FOR CONVERTING AN AC VOLTAGE
    10.
    发明公开
    DEVICE AND METHOD FOR CONVERTING AN AC VOLTAGE 审中-公开
    设备和方法转换的AC电压

    公开(公告)号：EP1588477A1

    公开(公告)日：2005-10-26

    申请号：EP03782991.8

    申请日：2003-12-19

    申请人： Leader Electronics (Europe) B.V.

    发明人： KOCH, René, Frederik

    IPC分类号： H02M3/338

    CPC分类号： H02M3/3385 ,  H02M3/338

    摘要： The present invention relates to a device (10) for converting an AC voltage from the mains electricity supply into a DC voltage of predetermined level (and waveform), comprising: - a rectifier circuit (16, 17, 18, 19) for connecting to the mains electricity supply; - a switching circuit connected to the rectifier circuit; - a main transformer (26) connected to the switching circuit; and - an auxiliary transformer (28) which is connected to the switching circuit and the secondary winding of which is coupled to the secondary winding of the main transformer such that the current through the switching circuit and the main transformer is limited to a predetermined value.