Soft-Switching Bidirectional Isolated Full-Bridge Converter with Active and Passive Snubbers

In this paper bidirectional isolated half-bridge dc–dc converter compared with full bridge dc-dc converter with a conversion ratio soft start-up, around nine times, and soft-switching features for battery charging/discharging is proposed. The Half Bridge DC-DC converter is equipped with an active flyback and two passive capacitor–diode snubbers. This can reduce voltage and current spikes, reduce voltage, switching losses and current stresses, while it can achieve near zero-voltage-switching and zero-current-switching soft-switching features. In this paper, the operational principle of the proposed converter is first described, and its analysis and design are then presented. The proposed bidirectional isolated dc-dc converter with active snubbers and passive snubbers can be carried out in MATLAB/Simulink.

[1]  Yangguang Yan,et al.  Bi-directional forward-flyback DC-DC converter , 2004, 2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551).

[2]  Hui Li,et al.  Small Signal Analysis of A Dual Half Bridge Isolated ZVS Bi-directional DC-DC converter for Electrical Vehicle Applications , 2005, 2005 IEEE 36th Power Electronics Specialists Conference.

[3]  Hui Li,et al.  Design and implementation of a DSP based digital controller for a dual half bridge isolated bi-directional dc-dc converter , 2006, Twenty-First Annual IEEE Applied Power Electronics Conference and Exposition, 2006. APEC '06..

[4]  Qingguang Yu,et al.  Switched Z-Source Isolated Bidirectional DC–DC Converter and Its Phase-Shifting Shoot-Through Bivariate Coordinated Control Strategy , 2012, IEEE Transactions on Industrial Electronics.

[5]  Tsorng-Juu Liang,et al.  Analysis and Implementation of a Novel Bidirectional DC–DC Converter , 2012, IEEE Transactions on Industrial Electronics.

[6]  B. G. Fernandes,et al.  Modified Soft-Switched Three-Phase Three-Level DC–DC Converter for High-Power Applications Having Extended Duty Cycle Range , 2012, IEEE Transactions on Industrial Electronics.

[7]  Zhe Zhang,et al.  Optimal Design of a Push-Pull-Forward Half-Bridge (PPFHB) Bidirectional DC–DC Converter With Variable Input Voltage , 2012, IEEE Transactions on Industrial Electronics.

[8]  Udaya K. Madawala,et al.  A Power–Frequency Controller for Bidirectional Inductive Power Transfer Systems , 2013, IEEE Transactions on Industrial Electronics.