POWER CONVERSION DEVICE

• Main Author: USAMI TOMOHIRO
• Format: Patent
• Language: English; Japanese
• Published: 30.05.2016
• 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

PROBLEM TO BE SOLVED: To provide a power conversion device capable of suppressing increase in a cost or variations in detection accuracy.SOLUTION: A power conversion device comprises: a transformer; a primary side full bridge circuit including a bridge unit including a primary side coil of the transformer and a magnetic coupling reactor composed of two reactors connected to both ends of the primary side coil; a first port connected to a positive electrode bus of the primary side full bridge circuit; a second port connected to a tap of the primary side coil; a secondary side full bridge circuit including a bridge unit including a secondary side coil of the transformer; a third port connected to a positive electrode bus of the secondary side full bridge circuit; a first search coil wound around a core of the magnetic coupling reactor; a second search coil wound around a core of the transformer; and a detection circuit for detecting voltages of the first port and third port by measuring variations in sense voltage generated by combining at least two voltages of a voltage of the first search coil and voltage of the second search coil.SELECTED DRAWING: Figure 1 【課題】コストアップや検出精度のばらつきを抑制できる、電力変換装置の提供。【解決手段】変圧器と、変圧器の１次側コイルと、１次側コイルの両端に接続される２つのリアクトルが磁気結合する磁気結合リアクトルとを有するブリッジ部を含む１次側フルブリッジ回路と、１次側フルブリッジ回路の正極母線に接続される第１のポートと、１次側コイルのタップに接続される第２のポートと、変圧器の２次側コイルを有するブリッジ部を含む２次側フルブリッジ回路と、２次側フルブリッジ回路の正極母線に接続される第３のポートと、磁気結合リアクトルのコアに巻かれる第１のサーチコイルと、変圧器のコアに巻かれる第２のサーチコイルと、第１のサーチコイルの電圧と第２のサーチコイルの電圧の少なくとも２つの電圧を合成することで生成されるセンス電圧の変化を測定することにより、第１のポートと第３のポートの電圧を検出する検出回路とを備える、電力変換装置。【選択図】図１