Sliding-Mode Control on an Interleaved Boost Converter with Zero-Voltage Transition

• Main Authors: Po-Han Chou, 周柏翰
• Other Authors: Yao-Ching Hsieh
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/83388771928931374001

碩士 === 國立東華大學 === 電機工程學系 === 99 === The objective of this thesis is to develop and implement a control algorithm applying frequency-modulation based sliding mode control (SMC) for a novel interleaved boost converter with zero-voltage transition. It is well known that the major advantage of SMC is its insensitivity upon parameter variations and/or external disturbances. Once the system state reaches and keeps on the sliding surface, neither parameter variation nor disturbance will sway the system out of the stable state. In this thesis, output voltage error is embraced into the sliding function, and then equivalent control force is derived, such that the system state trajectory is forced toward the sliding surface and converges to a stable operation point. Moreover, the approaching condition is proven that the system will reach sliding surface within a limited time period. SMC algorithm here guarantees the stability of the output voltage of the interleaved boost converter even if load variation and external load disturbance exist. The proposed sliding mode control is implemented in a 32-bit fixed-point DSP controller. Finally, experimental results are illustrated to show the validity of the proposed sliding mode control algorithm.