1. Research the PWM technology and write a summary report.
2. Describe the features and characteristics of multilevel converters and multistep converters
3. Matrix converters require specialized modulation techniques. Conduct research and write a summary report.
4. A full-bridge three-phase rectifier supplies energy to a dc load of 300 V and 60 A from a three-phase bridge of 440 V through a ΔY transformer. Select a diode and specify the transformer for a voltage drop across each diode of 0.7 V and continuous current.