An optimized design of coupled inductor for two-phase interleaved Boost
The two-phase interleaved Boost converter has the advantage of small ripple current,but the interleaved technology increases the number of inductors,thus increasing the volume and weight of the device,which is not conducive to the improvement of power density.Coupled inductors reduce the number and weight of magnetic components by integrating multiple magnetic components into one magnetic core to achieve partial sharing of the magnetic circuit.Therefore,a reverse coupled inductor was designed and applied to a two-phase interleaved Boost converter to improve the power density of the device.Firstly,the working principle and loss source of the reverse coupled inductor were ana-lyzed.And then,an improved"EE"type magnetic core was designed.On one hand,the utilization rate of the magnetic core was effectively improved,and on the other hand,the volume and weight of the inductor were reduced.Finally,the proposed optimal design scheme was verified by finite element simulation,and a two-phase interleaved Boost converter experimental platform with a power level of 2 kW was built.The effectiveness of the proposed optimization design is verified by the simulation and experimental results.
coupled inductortwo-phase interleaved Boostinductor designpower density
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