POWER CONVERSION EQUIPMENT AND METHOD OF CONTROLLING THE SAME

• Main Authors: HASEGAWA NAOTO, MUTO JUN, TANAHASHI NORITOSHI, UCHIHARA MASAFUMI, MIURA MITSUHIRO, SHONO SHOICHI
• Format: Patent
• Language: English; Japanese
• Published: 12.11.2015
• 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 power conversion equipment in which a battery capable of recovering regenerative electric power can be appropriately selected.SOLUTION: When a voltage of a regenerative electric power that is input from a first port connected with a primary side full bridge circuit is defined as VR, a discharge final voltage of a first battery connected with a center tap at a primary side of a transformer is defined as VCd, a charging final voltage of the first battery is defined as VCc, a discharge final voltage of a second battery connected with a third port connected with a secondary side full bridge circuit is defined as VBd, a charging final voltage of the second battery is defined as VBc, and a lower limit value of a duty ratio of the primary side full bridge circuit is defined as Dmin, the power conversion equipment determines that there is probability that the first battery and the second battery can be charged with the regenerative electric power when (VBd/N)≤VR≤(VBc/N) is satisfied. The power conversion equipment determines, on the other hand, that there is probability that the first battery can be charged with the regenerative electric power when VCd≤VR≤(VCc/Dmin) is satisfied. 【課題】回生電力を回収できるバッテリを適切に選択できること。【解決手段】１次側フルブリッジ回路に接続された第１のポートから入力された回生電力の電圧をＶＲ、変圧器の１次側のセンタータップに接続される第１のバッテリの放電終止電圧をＶＣｄ、前記第１のバッテリの充電終止電圧をＶＣｃ、２次側フルブリッジ回路に接続された第３のポートに接続される第２のバッテリの放電終止電圧をＶＢｄ、前記第２のバッテリの充電終止電圧をＶＢｃ、前記１次側フルブリッジ回路のデューティ比の下限値をＤｍｉｎとするとき、（ＶＢｄ／Ｎ） ＶＲ （ＶＢｃ／Ｎ）を満たす場合、前記回生電力を前記第１のバッテリ及び前記第２のバッテリに充電できる可能性があると判断し、ＶＣｄ ＶＲ （ＶＣｃ／Ｄｍｉｎ）を満たす場合、前記回生電力を前記第１のバッテリに充電できる可能性があると判断する。【選択図】図１