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    • 8. 发明授权
    • Electric power supply system for load
    • 负载供电系统
    • US6051893A
    • 2000-04-18
    • US181556
    • 1998-10-29
    • Hiroshi YamamotoHiroyuki SasaoKenichi KoyamaYukimori KishidaToshimasa MaruyamaMasakazu Fukada
    • Hiroshi YamamotoHiroyuki SasaoKenichi KoyamaYukimori KishidaToshimasa MaruyamaMasakazu Fukada
    • H02J9/06H02J3/00H02J9/04
    • H02J9/06Y02P80/11Y10T307/50Y10T307/615Y10T307/735
    • A fast changeover from one power system to another in the event of an irregularity in the power source system substantially reduces operating costs by minimizing a power loss in switches during conduction, dispenses with a cooling device for cooling a thyristor switch, and implements the thyristor switch in a compact and low-cost design. The power supply system for a load includes one switching apparatus for connecting a load to one power source system, and another switching apparatus for connecting the load to another power source system. Each of the switching apparatus includes a pair of thyristors connected in anti-parallel and a mechanical switch connected in parallel with the thyristor pair. The thyristor pairs and the mechanical switches are controlled so that the mechanical switches conduct a load current when the load is supplied with power from the one power source system in a steady power supply state. The thyristor switches conduct the load current during a power source changeover time within which the load is disconnected from one power source system and connected to the other power source system, and do not conduct the load current during the steady power supply state.
    • 在电源系统不规则的情况下,从一个电力系统到另一个电力系统的快速切换通过在传导期间最小化开关中的功率损耗来大大降低运行成本,省略用于冷却晶闸管开关的冷却装置,并且实施晶闸管开关 在一个紧凑和低成本的设计。 用于负载的电源系统包括用于将负载连接到一个电源系统的一个开关装置和用于将负载连接到另一个电源系统的另一个开关装置。 开关装置中的每一个包括以并联方式连接的一对晶闸管和与晶闸管对并联连接的机械开关。 控制晶闸管对和机械开关,使得当负载在稳定供电状态下从一个电源系统供电时,机械开关传导负载电流。 晶闸管开关在负载从一个电源系统断开并连接到另一个电源系统的电源切换时间内导通负载电流,并且在稳定供电状态期间不会导通负载电流。