Electrotechnical systems take an important place in all branches of society including wind energy generation, natural gas transportation, sheet metal for car production, electric cars. This book can be used by engineers in various disciplines who need to understand new electrical systems and investigate the existing ones. Electrical engineering, electrical power engineering, electrical drives, and power electronics are systems that require full analysis of steady state and transient processes, and simulation proves to be necessary. While the text uses SimPowerSystems, a supporting website provides models that give descriptions and explanations of the blocks and models.