| 摘要 |
PROBLEM TO BE SOLVED: To provide a power conversion device whose output current is less likely to oscillate even when the effective value of an input voltage fluctuates.SOLUTION: The power conversion device comprises an AC-DC converter 2, a smoothing capacitor 3, a DC-DC converter 4, input voltage measurement means 12, output current measurement means 13, output voltage measurement means 14, and a feedback control unit 5. The feedback control unit 5 exerts feedback control so that output power Pwhich is the product of an output current Iand an output voltage Vapproaches a target value P. Furthermore, when the effective value of an input voltage Vmeasured by the input voltage measurement means 12 has changed, the feedback control unit 5 changes the target value Pfor the output power Pso that a voltage Vof the smoothing capacitor 3 reaches a designated level. |
