A Fast Dynamic Response Control Method for the Hybrid SRC-PSFB Converter with Partial Power Processing Property

This paper presents a model-based fast dynamic response control (MFC) scheme for a hybrid connected converter, which combines a series resonant converter (SRC) and a phase-shift full-bridge (PSFB) converter, leveraging their respective advantages. The SRC ensures high efficiency in resonant operation, while the PSFB offers greater control transient speed. In this hybrid structure, the main power transfer through the SRC, providing high system efficiency. Besides, precise regulation of the output voltage is achieved by adjusting the PSFB’s phase shift, enabling effective power management. The proposed MFC control method ensures stable operation by rapidly responding to load changes and optimizing control algorithms for improved transient performance. Simulation studies and experimental tests validate the effectiveness of the MFC scheme, demonstrating enhanced dynamic response and practical applicability. The ISOP-connected hybrid converter with partial power processing (PPP) capability offers advantages such as high efficiency, control flexibility, and dynamic performance. The MFC scheme further enhances these benefits by enabling swift and accurate adaptation to varying load and input voltage conditions, providing a promising solution for efficient and responsive power conversion.