High Pass Design in Active Filter Damping

Konferenz: PCIM Europe 2022 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
10.05.2022 - 12.05.2022 in Nürnberg, Germany

doi:10.30420/565822177

Tagungsband: PCIM Europe 2022

Seiten: 9Sprache: EnglischTyp: PDF

Autoren:
Ulmer, Sabrina; Schullerus, Gernot; Soenmez, Ertugrul (Reutlingen University, Germany)

Inhalt:
The current paper proposes a design method for an active damping approach for LC output filters in a power stage for motor control with continuous output voltage. The power stage uses GaN-HEMTs and operates at switching frequencies in a range between 500 kHz and 1MHz. The active damping of the output filter is achieved here by a feedback of the filter inductor current using a high-pass structure. The paper discusses the impact of this feedback on the system behavior and proposes a design method.