A study on a new hysteresis current sharing controlling strategy for voltage source five-level inverter

摘要

Aiming at the single-phase current five-level inverter, the thesis analyzes the reasons for unbalanced inductor current, introduces some types of present strategies for balancing the inductor current through current sharing, and points out separately the current sharing principles for these strategies, comparing their advantages and shortcomings and then puts forward a new strategy for hysteresis control. Furthermore, the thesis analyzes the principles of this strategy and takes some stimulation with the same parameters as those of traditional hysteresis control strategies and finally comes up with the results to confirm the conclusion.