发明申请

  • 专利标题: Method of converting a direct current voltage from a source of direct current voltage, more specifically from a photovoltaic couse of direct current voltage, into a alternating current voltage
  • 专利标题(中): 将来自直流电压源的直流电压更具体地从直流电压的光伏电池转换成交流电压的方法
  • 申请号: US11154094
    申请日: 2005-06-16
  • 公开(公告)号: US20050286281A1
    公开(公告)日: 2005-12-29
  • 发明人: Matthias VictorFrank GreizerSven BremickerUwe Hubler
  • 申请人: Matthias VictorFrank GreizerSven BremickerUwe Hubler
  • 优先权: DE102004030912.4 20040625
  • 主分类号: H02M7/48
  • IPC分类号: H02M7/48 H02M7/537
Method of converting a direct current voltage from a source of direct current voltage, more specifically from a photovoltaic couse of direct current voltage, into a alternating current voltage
摘要:
An inverter is devised to avoid high-frequency voltages at input terminals and to allow good efficiency thanks to its simple and cost-optimized circuit layout. This is achieved by a method of converting a direct current voltage, more specifically from a photovoltaic source of direct current voltage, into an alternating current voltage at a frequency through a bridge circuit comprising switching elements (V1-V4) and free-wheeling elements (D1-D4), said switching elements (V1-V4) being on the one side gated at the frequency and on the other side clocked at a high clock rate, a direct current voltage circuit, an alternating current voltage circuit and a plurality of free-wheeling phases being provided. It is provided that, during the free-wheeling phases, the alternating current voltage circuit is decoupled from the direct current voltage circuit by means of a switching element disposed in the direct current voltage circuit, a free-wheeling current flowing through one of the free-wheeling elements (D1) in the bridge circuit when in the decoupled state.
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