In a conventionally designed motor the attainable speed range is limited to approximately 1:3. In most cases additional means for the extension of the driving range are required. If, however, the motor is equipped with an additional compensation winding, a controllable speed range of close to 1:8 is obtainable by field weakening. Acceleration characteristics are applied to evaluate the various drive units which provide advantages in energy consumption and disadvantages in the acceleration time, and vice versa. On the basis of test vehicles with various drive systems, design of the required control is explained. Additional requirements for automatic control are partially offset by the additional protective devices required to restrict the effects of faulty handing of a manually controlled drive.
Comparison of electrical drives for road vehicles
Vergleich von elektrischen Antrieben fuer Strassenfahrzeuge
IEEE Transactions on Vehicular Technology ; 26 , 2 ; 123-128
1977
6 Seiten, 8 Bilder, 1 Tabelle, 5 Quellen
Article (Journal)
English
Electrical drives for road vehicles
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