Improved Topology of Modular High-voltage Power Converter with Input Series Output Series Configuration
The modular high-voltage power supply,characterized by high efficiency,reliability,and reconfigurability,has found widespread application in high-power high-voltage devices.Among them,the input series output series topology based on the series-parallel resonant converter is suitable for high-frequency high-voltage operating environments,offering advantages such as reduced power losses,winding dielectric losses,and utilizing parasitic parameters of multi-stage transformer.It has broad prospects for application.Current research on this topology primarily focuses on theoretical analysis and efficiency optimization.In practical high-voltage environments,the high-voltage isolation issues between windings of multi-stage transformers have not been effectively addressed.In this paper,a design of shared primary windings for multi-stage transformers is proposed to simplify the high-voltage isolation issues inherent in traditional transformer single-stage winding methods.However,this winding scheme can lead to non-uniform voltage distribution and voltage divergence in multi-stage transformers.Therefore,based on utilizing the parasitic parameters of diodes in transformers and voltage doubling rectifier circuits,an improved topology design is proposed to effectively address the uneven voltage distribution issue.Simulation and experimental validations were conducted,and the results from both simulations and experiments confirm the effectiveness of the proposed high-voltage isolation structure with shared primary windings and the improved topology.
Modular high-voltage power suppliesHigh-voltage isolationSeries-parallel resonant converter
万方数据
维普
