Good afternoon everyone,
I am currently working on a 1 kW Dual Active Bridge (DAB) converter with an input voltage range of 360 V–400 V and an output voltage range of 32 V–60 V. My objective is to design the converter with Zero-Voltage Switching (ZVS) enabled over the widest possible operating range, particularly under light-load conditions.
I am facing challenges related to the magnetizing inductance (Lm) calculation, which plays a critical role in achieving ZVS at light load. I would greatly appreciate it if someone could share the methodology or equations to determine the optimum value of Lm to maximize the ZVS operating window under light-load conditions.
Additionally, I am encountering an issue in my LTspice simulations. Theoretically, reducing Lm should increase the ZVS range; however, in my simulation results, the ZVS window decreases as Lm is reduced. I would appreciate any guidance on identifying possible causes or mistakes in the simulation setup.
If any experienced professional is available, I would be grateful if we could arrange a brief meeting tomorrow at 4pm to discuss the issue in detail, which would help in better understanding and resolving the problem.
