| 摘要 |
A hybrid DC-to-AC conversion system includes a first DC input voltage (10), a second DC input voltage (20), a power conversion apparatus (30), and a comparison unit (60). The power conversion apparatus (30) is connected in parallel to the first DC input voltage (10) and the second DC input voltage (20) to convert the first DC input voltage (10) or the second DC input voltage (20) into an AC output voltage (Vo). The comparison unit (60) receives the AC output voltage (Vo) and an external reference voltage (Vref). The comparison unit (60) outputs a control signal (Sc) to make the first DC input voltage (10) supply a load (50) when an absolute value of the AC output voltage (Vo) is less than or equal to the external reference voltage (Vref), whereas the comparison unit (60) outputs the control signal (Sc) to make the second DC input voltage (20) supply the load (50) when the absolute value of the AC output voltage (Vo) is greater than the external reference voltage (Vref). |
