POWER CONVERSION DEVICE AND REFRIGERATION CYCLE DEVICE

摘要

A power conversion device (1) comprises a resistance value changing circuit (3), pressure-raising circuit (4), and smoothing capacitor (5). The pressure-raising circuit (4) includes a reactor (11), a first reverse current-preventing element (12) and a second reverse current-preventing element (13), a first switching element (14) and a second switching element (15), and an intermediate capacitor (16). The pressure-raising circuit produces a control power source and is provided with a drive circuit (7) for driving the first switching element (14) and the second switching element (15), according to the control power source.