ABSTRACT
Electric motors have played a crucial role in the evolution of the automotive industry. Due to historical, technical, and economical incentives direct current (DC)-brushed machines have been the favorite choice for numerous automotive applications ranging from starters to auxiliary devices. This chapter provides an overview of the fundamentals, magnetic design, and control practices for DC-brushed motor drives. Ease of control, capital investment, and relatively low cost of manufacturing compared to other energy conversion devices are among the main reasons to justify the substantial use of DC-brushed machines, as advanced motor drive technologies emerge. Electromagnetic torque in brushed DC-motor drives may be viewed as a product of interaction between two magnetic fields constructed by armature and field. Under steady-state conditions when vital parameters of a DC machine are at quasi-static conditions, one can analytically extract the output characteristic of the series connected DC-motors.
