11//113356 Comprehensive Evaluation of Three-Phase AC-AC PWM Converter Systems J. W. Kolar and T. Friedli Swiss Federal Institute of Technology (ETH) Zurich Power Electronic Systems Laboratory www.pes.ee.ethz.ch 2/135 Outline ► Review of AC-DC-AC Converters 60 Min ► Derivation of Basic MC Topologies 15 Min ► ► MC Dimensioning 50 Min ► Extended MC Topologies 15 Min ► ► Methodology for Converter Comparisons 45 Min ► Comparative Evaluation of AC-AC Converters 15 Min ► ► Multi-Domain Simulator Demonstration (GECKO) 40 Min ► Conclusions / Questions / Discussion 3/135 Classification of Three-Phase AC-AC Converters ■ Converters with DC-link ■ Hybrid Converters ■ Indirect / Direct Matrix Converters 4/135 DC-link AC-AC Converter Topologies ! ! ! ► V-BBC ► I-BBC 5/135 Symmetric Three-Phase Mains Phase Voltages Phase Currents Instantaneous Power 6/135 All-SiC JFET I-BBC Prototype ► P = 2.9 kVA out ► f = 200 kHz S U = 400 V ► 2.4 kVA / liter (42 W/in3) out ► 230 x 80 x 65 mm3 200V/div 5A/div DC Link Inductor 320 H/6 A U = 400 V in I = 4.3 A in 7/135 Basic Matrix Converter Topologies 8/135 V-BBC Voltage Space Vectors Modulation DC Link Current 9/135 VSI Space Vector Modulation (1) - Switching with Interlock Delay Output Voltage Reference Value ! ! 23 = 8 Switching States 10/135 VSI Space Vector Modulation (2) Switching State Sequence Formation of the Output Voltage Relative On-times