| Summary: | 博士 === 國立交通大學 === 電控工程研究所 === 107 === Current balancing and voltage balancing control methods are widely employed in multiphase and multilevel DC-DC converters. Imbalanced current and voltage are two significant drawbacks, which may reduce the system reliability and conversion efficiency. Therefore, the development of balancing control approaches for current and voltage is important and necessary. However, current and voltage balancing functions are difficult to efficiently achieve in state-of-the-art. This dissertation proposes a symmetrical current balancing control (SCBC) and a symmetrical voltage balancing control (SVBC) that could be used for the multiphase interleaved boost converter (MIBC) and multilevel flying capacitor boost converter (MFCBC), respectively. Instead of the conventional multiloop configuration with the inner and outer control loops in series, the proposed SCBC and SVBC are connected in parallel, which has superior dynamic responses. In addition, this dissertation also introduces the average state-space model of DC-DC converters, analyzes the small-signal model of each control system, and designs all controller parameters. Finally, all control algorithms are implemented in a Field Programmable Gate Array (FPGA) chip. The simulation and experiment results have demonstrated that both proposed symmetrical balancing control methods meet expected performances.
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