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Power decoupling control of single‐phase or three‐phase input high‐frequency single‐phase output matrix converters

This study proposes a matrix converter (MC) control method capable of power decoupling (PD) for a single‐phase input isolated AC‐DC converter. The proposed converter can also be fed by a three‐phase source without any additional components. The PD circuit shares its capacitors with the input filters and its switches with the MC, and absorbs the source power ripple to supply a constant DC voltage for the load. Moreover, the MC control method achieves a sinusoidal source current, a high output frequency, and soft switching. Additionally, the feedback control to compensate for the DC output voltage error is applied. The proposed method is evaluated experimentally.