The Three-Phase Brushless AC Generator is an optional equipment for the Electromechanical system (EMS), a unique approach to electric power technology in philosophy and in design. The EMS machines are the result of Lab-Volt's engineering expertise and the careful research of educational requirements and industrial applications. All machines are mounted in standard size EMS Modules, allowing an easy integration in the Electromechanical Systems.

It is a synchronous generator without its conventional brush-gear for field excitation. It comprises an AC power generator and an exciter which can be set in one of two modes: separately excited (PILOT) or selfexcited (AUTO). The exciter voltage is adjustable in both modes using a rheostat control on the module faceplate.

Silk-screened markings on the faceplate clearly identify the rotor and stator windings, as well as other components. A shaft-mounted rectifier assembly interconnects the exciter and generator rotors. Connections of these devices have been brought out to the faceplate through externally mounted slip rings and brushes. In this way, students are able to observe and characterize the function and operation of the brushless AC generator. Students are then able to turn these observations into valuable hands-on learning applications.

Each phase of the stator windings is independently terminated to permit operation in either delta or star (wye) configuration. The rotor, which has a salient pole construction, is equipped with a squirrel-cage damper and salient pole windings.