| 摘要 |
PURPOSE:To prevent the appearance of a ripple current component included in an input power at an output side by forming a single-phase inverter of a component having an electric rating smaller than an output power. CONSTITUTION:An input DC power is converted to three or more phase AC power by a switching circuit 2 and a sine wave filter 3 formed in three or more phases. The AC power is input to a primary side of respective phases of an insulation adding transformer 4. When windings of secondary side of the transformer 4 are connected to be added, the AC power to be output from the transformer 4 becomes a single-phase sine wave AC in which power split to the three or more phases is vectorially added. |
