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    • 30. 发明申请
    • POWER CONVERSION DEVICE
    • 电源转换器件
    • US20140327306A1
    • 2014-11-06
    • US14370164
    • 2012-08-21
    • Sadayuki Inoue
    • Sadayuki Inoue
    • H02J9/06H02J7/02
    • H02J9/062H02J3/32H02J7/0029H02J7/022H02J7/047H02J2007/0037H02J2007/004H02M3/33584H02M2001/007Y10T307/344
    • A power conversion device connected between a storage battery and AC system charges the storage battery with power from the AC system and discharges power from the storage battery to the AC system. The power conversion device includes a DC/DC conversion circuit performing conversion between a storage battery voltage and DC bus voltage, a DC/AC conversion circuit performing conversion between the DC bus voltage and AC voltage of the AC system, and control circuits controlling the DC/DC and DC/AC conversion circuits. The control circuits select either step-up control or step-down control for the DC/DC conversion circuit based on the storage battery voltage, the storage battery charge state, and a control range of the DC bus voltage, set a control target value of the DC bus voltage, and control the DC/DC and DC/AC conversion circuits by the selected control method so the DC bus voltage becomes the control target value.
    • 连接在蓄电池和交流系统之间的电力转换装置利用来自交流系统的电力对蓄电池进行充电,并从蓄电池向交流系统供电。 电力转换装置包括执行蓄电池电压和直流母线电压之间的转换的DC / DC转换电路,执行直流母线电压和交流系统的交流电压之间的转换的直流/交流转换电路,以及控制直流母线电压的控制电路 / DC和DC / AC转换电路。 控制电路基于蓄电池电压,蓄电池充电状态和直流母线电压的控制范围,选择直流/直流转换电路的升压控制或降压控制,设定控制目标值 直流母线电压,并通过选择的控制方式控制DC / DC和DC / AC转换电路,使直流母线电压成为控制目标值。