Traveling wave piezoelectric transformer for multi-level insulated gate-driver power supply

Thomas Martinez (1) , Denis Labrousse (1) , Gaël Pillonnet (2) , Dejan Vasic (3, 4) , François Costa (1)

1 SATIE - Systèmes et Applications des Technologies de l'Information et de l'Energie
2 CEA-LETI - Commissariat à l'énergie atomique et aux énergies alternatives - Laboratoire d'Electronique et de Technologie de l'Information
3 SATIE-EPI - Electronique de Puissance et Intégration
4 SATIE-CSEE - Composants et Systèmes pour l'Energie Electrique

The traveling-wave piezoelectric transformer (TWPT) is a new topology of piezoelectric transformer providing a multi-phases system of voltages at its output. The inherent galvanic insulation of piezoelectric transformers makes them particularly suitable for insulated gate-drive power supply applications. In this paper, we use the TWPT with several phases to generate the different insulated voltage rails required for the driving of a multi-level inverter leg. The insulated gate driver power supply including the TWPT is presented and experiments are performed to drive the power MOSFETs of a half-bridge. The TWPT and the circuit associated generates a bipolar voltage level +15 V/-15 V up to 500 kHz switching frequency.

Domains: Electric power

Thomas Martinez, Denis Labrousse, Gaël Pillonnet, Dejan Vasic, François Costa. Traveling wave piezoelectric transformer for multi-level insulated gate-driver power supply. PCIM Europe 2019; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, May 2019, Nuremberg, Germany. pp.1-7. ⟨hal-04461807⟩