* July 4, 2003, on "Some aspects of Induction Motor Drives for Electric Vehicles Applications," at the University of Tokyo,
* December 15, 2004, on "Control of Resonant Converters," at Imperial College, London,
* December 17, 2004, on "Dynamic Pulse Modulation to Control Resonant DC/DC Converters," at the University of Nottingham,
* November 10, 2005, on "Some aspects of control and topological developments of resonant DC/DC converters and Inverters," at Syracuse University, NY, USA,
* November 11, 2005, on "Some investigations on the Controlled Capacitor Charging (CCC)-type Inverter," at GE Global Research, NY, USA.