Contents

LE 1 - Frequency inverter

• Basics of the frequency inverter (half bridges of the inverter, rotating voltage space vectors)
• Different types of modulation and their effect on the conductor and string voltages and space vectors
• Control of an asynchronous machine

LE 2 - Network perturbations

• Analysis of harmonics on the mains side caused by rectifier circuits with smoothing capacitor.
• Application of the FFT for analysis, measures to reduce the harmonic components.