The book intends to convey mechanical fundamentals of electric railway propulsion, whichincludes rail-bound guidance, transmission of traction effort from wheel to rail under theinfluence of non-constant levels of adhesion and the transmission of motor torque to a springmounted and thus sliding drive set.The focal point of the book will be the disposition of electric traction units powered bythree-phase induction motors. We shall discuss the stationary and dynamical behaviour of thesquirrel-cage induction motor and the principle and construction features of pulse-controlledinverters, as well as scalar and field-oriented control systems and four-quadrant powerconverters, feeding the DC link of the inverters.