| 摘要 |
PROBLEM TO BE SOLVED: To provide a small-sized and inexpensive power conditioner by providing a DC/DC converter in which transformers are small-sized and which can be produced in simple configuration and at low cost.SOLUTION: In the power conditioner comprising a DC/DC converter 1 and a three-level inverter 2, the DC/DC converter 1 supplies DC power that is supplied from a power generation part Vdc, to two insulation transformers T1 and T2 while switching the DC power by switching elements SW1-SW4. Output of the two insulation transformers T1 and T2 is rectified by diodes D1-D4 and supplied to a DC link capacitor C3 for upper voltage and a DC link capacitor C4 for lower voltage. Thus, the DC link capacitors C3 and C4 are charged evenly and used as an input voltage of the three-level inverter.SELECTED DRAWING: Figure 1 |
