MOBILE TRAINING AND LABORATORY BENCH TO STUDY ELECTRICAL MACHINES AND DRIVES Russian patent published in 2013 - IPC G09B23/18 

FIELD: electricity.

SUBSTANCE: tested direct and alternating current electrical machines are mounted on the base and interconnected by input shafts through intermediate gearboxes and coupling. Outputs of invertors are connected to windings of alternating-current electrical machines and their inputs are connected to two inputs of the microcontroller; the output of a pulse-length modulator is connected to winding of direct-current electrical machine and its input is connected to the third output of the microcontroller. Control module of gear-motors is made as a double-sided printed circuit-board fixed at spacing tubes under the base. The base is screwed to top-rounded side walls of -shaped body. The body is covered with ∩-shaped cover incurved along the radius of its side walls roundoff. Electrical measurements and display unit is made as a closed parallelepiped; at its upper and front surfaces there are terminals of the patch board, liquid-crystal display and the microcontroller is installed inside this unit. Output of the initial shaft position sensor is connected to the microcontroller input.

EFFECT: decreasing overall dimensions and weight of the bench, improving electrical safety.

3 cl, 7 dwg