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    • 31. 发明授权
    • Current limit circuit with superseding characteristic to activate overcurrent protection circuit
    • 具有超越特性的电流限制电路用于激活过流保护电路
    • US3805142A
    • 1974-04-16
    • US32255573
    • 1973-01-10
    • BELL TELEPHONE LABOR INC
    • RANDO R
    • H02H7/12G05F1/10H02M3/315H02M1/18
    • H02M3/3155
    • A current and voltage regulated DC to DC converter is designed with protection features to permit its operation in parallel with like DC to DC converters. The features are designed to assure shutdown protection against overcurrent and overvoltage conditions and to assure that each converter will contribute a current to the common load. The protection features include a selective high voltage shutdown to shut down only the converter causing an overvoltage and an overcurrent protection circuit to supersede the normal current regulation in response to a fault condition. A reverse current shutdown circuit protects the common load from faults and short circuits internal to the converter circuit. These protection features permit the converters to operate in parallel without shutting down the entire system should an individual converter malfunction.
    • 电流和电压调节的DC-DC转换器设计有保护特性,以允许其与类似DC-DC转换器并联运行。 这些特性旨在确保对过电流和过压状况的关断保护,并确保每个转换器将为公共负载提供电流。 保护功能包括选择性高压关断,仅关闭转换器,导致过压,过流保护电路可以响应于故障状态来取代正常电流调节。 反向电流关断电路保护公共负载免受转换器电路内部的故障和短路。 如果单个转换器发生故障,这些保护功能允许转换器并联运行,而不会关闭整个系统。
    • 39. 发明公开
    • Energy converter
    • Energiekonverter。
    • EP0253432A1
    • 1988-01-20
    • EP87201257.0
    • 1987-07-02
    • HOLLANDSE SIGNAALAPPARATEN B.V.
    • Buikema, Wolter
    • H02M3/315H02M7/515
    • H02M3/3155H02M7/5152
    • In an energy converter of the type utilising a series-resonant bridge circuit (1), containing at least two thyristors (6A, 7A, 6B,7B) diodes (8A, 9A, 8B, 9B), antiparallel connected thereto and a high-frequency output transformer (12), and an energy buffer (2), a control circuit (3) is incorporated for generating trigger pulses for the appropriate thyristors in response to the energy of the buffer (2). The energy converter comprises a switching circuit (24) incorporated in at least one of the supply lines of the supply source to the series-resonant circuit for ensuring that the diode, antiparallel connected to the last-conducting thyristor, starts to draw current immediately after this thyristor is blocked. The control circuit (3) furthermore generates signals indicative of the presence of current flowing through the diodes (8A, 9A, 8B, 9B) which signals control the supply of the trigger pulses to the thyristors (6A, 7A, 6B, 7B).
    • 在利用串联谐振桥接电路(1)的能量转换器中,包含至少两个晶体管(6A,7A,6B,7B)与其反向并联连接的二极管(8A,9A,8B,9B) 频率输出变压器(12)和能量缓冲器(2),控制电路(3)被结合以响应于缓冲器(2)的能量产生适当晶闸管的触发脉冲。 能量转换器包括一个开关电路(24),该开关电路(24)包含在串联谐振电路的供电源的至少一个供电线路中,用于确保反向并联连接到最后导通晶闸管的二极管开始立即在第 该晶闸管被阻塞。 控制电路(3)还产生指示流过二极管(8A,9A,8B,9B)的电流的信号,信号控制触发脉冲的供给到晶闸管(6A,7A,6B,7B)。