Bidirectional DCDC system and method based on state transition

• Main Authors: WANG XIAOHONG, ZENG JIANHUA, TIAN LIANFANG, HUANG SHIQIUJIANG, CHEN YINGJIE, ZHONG SONGJIN, CHEN DI
• Format: Patent
• Language: Chinese; English
• Published: 07.12.2016
• 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

The invention discloses a bidirectional DCDC system and method based on state transition. The system comprises a bidirectional full-bridge converter, a DCDC bidirectional controller, a state transition module for working state switching and a limitation and protection module; the DCDC bidirectional controller outputs a drive signal to the bidirectional full-bridge converter; the state transition module inputs four signals including the DCDC bidirectional controller enable signal, the DCDC bidirectional controller mode changing signal, the inductance zero-current indication signal of the DCDC bidirectional controller and the system abnormality input signal of the limitation and protection module; the state transition module outputs a current set value switching signal and a drive disability signal to the DCDC bidirectional controller; the limitation and protection module inputs voltage and current signals of the bidirectional full-bridge converter. Accordingly, quick and controllable state switching in the pow