Transformer and Series Inductance Integration for Harmonic Filtering in PWM Inverters Based in a Simple Design Procedure

PWM inverters are widely used in different power electronics applications. PWM waveforms have a harmonic content which should be filtered, typically based on LC topologies. If a transformer is required, the leakage inductance can be used as a series inductance for the LC filter. This work proposes an easy procedure for the integration of the series inductance for harmonic filtering inside the transformer, while the value of the leakage inductance can be determined by design.