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    • 5. 发明授权
    • Power supply system and process including sub-switching element control
    • 电源系统和过程包括子开关元件控制
    • US06803749B2
    • 2004-10-12
    • US10337735
    • 2003-01-08
    • Kouji ManabeYoshihiro Mitsumoto
    • Kouji ManabeYoshihiro Mitsumoto
    • G05F1652
    • H02J7/1438
    • A power supply system includes: a high voltage power supply; a main power supply wire; a step down circuit inputting a power having a high voltage and outputting a power having a lowered voltage; a sub-power supply wire; a voltage sensor for sensing a voltage of the power outputted from the step down circuit; a sub-switching element disposed on the sub-power supply wire; and a controller for controlling the sub-switching element. The controller turns off the sub-switching element, when the voltage sensed with the voltage sensor is equal to or higher than a first predetermined voltage defined lower than the lowered voltage. Moreover, the controller drives the sub-switching element in duty control for stepping down the power having the high voltage to the power having the lowered voltage outputted from the step down circuit, when the voltage sensed with the voltage sensor is lower than the first predetermined voltage.
    • 电源系统包括:高压电源; 主电源线; 降压电路输入具有高电压的电力并输出具有降低的电压的电力; 子电源线; 用于感测从降压电路输出的电力的电压的电压传感器; 设置在副电源线上的副开关元件; 以及用于控制子开关元件的控制器。 当用电压传感器感测的电压等于或高于限定为低于降低的电压的第一预定电压时,控制器关闭副开关元件。 此外,当利用电压传感器检测到的电压低于第一预定值时,控制器将副开关元件驱动占空比控制,以将具有高电压的功率降压到从降压电路输出的具有降低的电压的电力 电压。