Bidirectional DC/DC power conversion using constant frequency multi-resonant topology

Analysis and Design of a Non-Isolated Bidirectional ZVS-PWM Active Clamped DC-DC Converter

“…(15). To minimize the reverse recovery losses in this diode, the duration of this t c1 mode of operation given by eqn.…”

“…This results in very high turn-off losses that take away from the improvement in efficiency due to the ZVS turn-on and additional filtering is needed to reduce voltage ripple. (ii) Another approach to implementing soft-switching in a non-isolated bidirectional dc-dc converter is to use quasi-resonant or multi-resonant techniques [5], [15]. Doing so, however, results in the converter having high peak voltage and/or current stresses and forces the converter to be operated with variable switching frequency control, which complicates the design of the converter -especially the design of the magnetic and filtering elements as the converter must be able to operates under a wide range of switching frequencies.…”

“…Doing so, however, results in the converter having high peak voltage and/or current stresses and forces the converter to be operated with variable switching frequency control, which complicates the design of the converter -especially the design of the magnetic and filtering elements as the converter must be able to operates under a wide range of switching frequencies. (iii) A third approach has been to use auxiliary circuits to assist the switches to operate with soft-switching [7], [9], [13]- [15], as is done in zero-voltage transition (ZVT) and zero-current transition (ZCT) converters. Although this approach is an improvement over the other two approaches, it can be costly and complex.…”

“…They are connected to the buses with bidirectional dc-dc converters that allow the batteries to be discharged or charged, depending on the operating conditions. Bidirectional dc-dc converters may be isolated [1], [8], [10]- [13] or non-isolated [2]- [7], [9], [14], [15], depending on the application.…”

Online Energy Management of City Cars with Multi-Objective Linear Parameter-Varying L2-Gain Control

“…For example, some designed multiple bi-directional DC/DC power converters to "soften" switching of currents, and RCD snubbers that network diodes with resistors and capacitors to reduce energy consumption from high-frequency switching [13][14][15]. Some have embedded microcontrollers into power converters for optimal timing of switching to suppress electricity loss [16][17][18][19].…”