Interleaved soft switched non isolated boost converter with improved voltage regulation

摘要

Boost converters plays a crucial role in high power applications. They can be combined with a voltage doubler to have a better performance. The low output of a renewable energy sources is boosted to suitable voltage using boost converter and voltage doubler circuit. The proposed converter eliminates the limitations of the conventional converters and they have the advantages like interleaving structure, non-isolated structure and soft switching scheme. Due to soft switched scheme, the current stress and voltage stress are eliminated and hence reduced switch losses. Interleaving structure guarantees equal current sharing and hence reduced component size. Non-isolated structure reduces the circuit size and complexity. A 10 W converter is designed and simulated. A closed loop control method is adopted to overcome the voltage drift problem.