A Novel Three-phase Three-Switch Three-Level Unity Power factor Boost-Type PWM Rectifier. - Johann W. Kolar; Franz C. Zach (J. Circuits Syst. Comput., 1995)

Basic considerations and topologies of switched-mode assisted linear power amplifiers. - Hans Ertl; Johann Walter Kolar; Franz C. Zach (IEEE Trans. Ind. Electron., 1997)

A novel three-phase utility interface minimizing line current harmonics of high-power telecommunications rectifier modules. - Johann W. Kolar; Franz C. Zach (IEEE Trans. Ind. Electron., 1997)

How to include the dependency of the RDS(on) of power MOSFETs on the instantaneous value of the drain current into the calculation of the conduction losses of high-frequency three-phase PWM inverters. - Johann Walter Kolar; Hans Ertl; Franz C. Zach (IEEE Trans. Ind. Electron., 1998)

VIENNA rectifier II-a novel single-stage high-frequency isolated three-phase PWM rectifier system. - Johann W. Kolar; Uwe Drofenik; Franz C. Zach (IEEE Trans. Ind. Electron., 1999)

Analysis of a multilevel multicell switch-mode power amplifier employing the "flying-battery" concept. - Hans Ertl; Johann W. Kolar; Franz C. Zach (IEEE Trans. Ind. Electron., 2002)

A novel multicell DC-AC converter for applications in renewable energy systems. - Hans Ertl; Johann W. Kolar; Franz C. Zach (IEEE Trans. Ind. Electron., 2002)