Compound excited electric motors are used where there is a need for constant speed with extreme load variations and in order to combine the best of the parallel connection with the best of the serial connection, for this there is the composite connection. We achieved optimum parallel engine speed regulation with the excellent starting torque of the series engine. Browning 1VP68X
In general, we can say that depending on the application, DC drives have the greatest benefits in terms of reliability, user friendly operation and dynamic control, such as:
– operation in four quadrants with relatively lower costs;
– continuous cycle even at low speeds; high torque at start and low revs; wide variation of speed;
– ease in speed control;
– AC / DC converters require less space;
– flexibility (different types of excitation);
-relative simplicity of modern AC / DC converters.
The function of the composite motor is to make it possible to take advantage of the high torque of the series connection, without speed shots with reduced loads or no load, then apply the low speed variation of the parallel motor under different load situations.