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    • 5. 发明授权
    • Active constant power supply apparatus
    • 主动恒电源装置
    • US08710756B2
    • 2014-04-29
    • US13255733
    • 2010-03-08
    • Dong-Won Lee
    • Dong-Won Lee
    • H05B37/02H05B39/04H05B41/36
    • H05B33/0815H02M1/4225H02M2001/0012H02M2003/1586Y02B70/126
    • Disclosed is an active constant power supply apparatus, which rectifies power having various intensities and frequencies without using a high capacity condenser for a smoothing circuit which degrades the power factor of a circuit, and supplies constant power to a load. The active constant power supply apparatus includes an AC power supplier for supplying AC power; a rectifying circuit which receives AC power from the AC power supply unit and rectifies the received power; a driving coil connected in series to the load receiving power from the rectifying circuit; a power switch which switches the current passing through the driving coil and the load on/off; a pulse-type driving signal generator connected to a gate terminal of the power switch to control the switching on/off operation of the power switch; a turn-off decider which generates a turn-off signal when the current flowing along the driving coil has a value higher than the designed value, so as to turn off the power switch; and a pulse width controller which measures the control period ranging from the switch-on time of the driving signal generator to the switch-off time of the turn-off decider, and controls the driving pulse width of the driving signal generator such that the driving pulse width coincides with the control period.
    • 公开了一种有源恒定电源装置,其对具有各种强度和频率的功率进行整流,而不使用用于平滑电路的高容量电容器,其降低电路的功率因数,并向负载提供恒定功率。 有源恒定电源装置包括用于提供AC电力的AC电源; 整流电路,从交流电源单元接收交流电力,对接收的功率进行整流; 与来自整流电路的负载接收功率串联的驱动线圈; 电源开关,其切换通过驱动线圈的电流和负载的开/关; 连接到电源开关的栅极端子的脉冲型驱动信号发生器,以控制电源开关的接通/断开操作; 当沿着驱动线圈流动的电流具有高于设计值的值时产生关断信号的关断判定器,以便关断电源开关; 以及脉冲宽度控制器,其测量从驱动信号发生器的接通时间到关断判定器的关断时间的控制周期,并且控制驱动信号发生器的驱动脉冲宽度,使得驱动 脉冲宽度与控制周期一致。