POWER CONVERSION DEVICE

• Main Author: KIDERA KAZUNORI
• Format: Patent
• Language: English; Japanese
• Published: 27.02.2020
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

To provide a power conversion device capable of charging a capacitor that is necessary for a steady operation even in a non-load state.SOLUTION: A power conversion device 10 includes: a first conversion circuit 1 which is electrically connected between a first input point 101 which is a high-potential side of a DC power source 4 and a reference potential point 100, and which switches the potentials of a first output point 103 and a second output point 104 through a first capacitor C1 and a plurality of switching elements; a second conversion circuit 2 which is electrically connected between a second input point 102 which is a low-potential side of the DC power source 4 and the reference potential point 100, and which switches the potentials of a third output point 105 and a fourth output point 106 through a second capacitor C2 and a plurality of switching elements; and a voltage adjustment circuit 3 which slows up a DC voltage outputted from the DC power source 4 during a starting time period that starts when power supply from the DC power source 4 is started, and ends when charging each of the first capacitor C1 and the second capacitor C2 to a prescribed voltage is completed.SELECTED DRAWING: Figure 1 【課題】定常動作に必要なキャパシタを無負荷状態でも充電することが可能な電力変換装置を提供する。【解決手段】電力変換装置１０は、直流電源４の高電位側となる第１入力点１０１と基準電位点１００との間に電気的に接続され、第１キャパシタＣ１および複数のスイッチング素子により第１出力点１０３および第２出力点１０４の電位を切り替える第１変換回路１と、直流電源４の低電位側となる第２入力点１０２と基準電位点１００との間に電気的に接続され、第２キャパシタＣ２および複数のスイッチング素子により第３出力点１０５および第４出力点１０６の電位を切り替える第２変換回路２と、直流電源４より電力の供給が開始されてから第１キャパシタＣ１および第２キャパシタＣ２が規定電圧に充電されるまでの始動期間において、直流電源４から出力される直流電圧をスローアップする電圧調整回路３を備える。【選択図】図１