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    • 6. 发明专利
    • Inverter - Taeakon
    • JP3687641B2
    • 2005-08-24
    • JP2002288591
    • 2002-10-01
    • 松下電器産業株式会社
    • 恭久 二宮章弘 京極志朗 前田員宏 原田智弘 杉本俊成 馬場
    • F24F11/02F25B1/00H02M7/12H02M7/48
    • PURPOSE: An inverter air conditioner is provided to suppress harmonics with obtaining a high power factor by properly driving first and second switching elements, resulting in improved maximum ability and efficiency of an air conditioner. CONSTITUTION: A rectifier circuit(2) having two input terminals and two output terminals is connected to AC(Alternating Current) power supply(1) through a reactor(3) at one side of the input terminals, and converts an AC-power supply voltage into a DC(Direct Current) voltage. Condenser circuits(4,5) are formed of a plurality of condensers connected in the serial, and connected between two output terminals of the rectifier circuit. A converter includes a first switching element(7) connected between one input terminal of the rectifier circuit and one connection point between the condensers in the condenser circuits, and a second switching element(8) connected between the other input terminal of the rectifier circuit and the connection point in the condenser circuits. A power-source phase detection element(14) detects a phase of the AC power supply. A control element(9) controls the first and second switching elements based on a signal of the power-source phase detection element. An inverter(10) is formed of an inverter part converting a DC output voltage of the converter into an AD voltage, and a revolving-speed control element controlling an inverter part output frequency or inverter part output voltage by changing a conduction ratio to the inverter. A compressor(11) is driven by the inverter.