| 摘要 |
<p>System for distributing the power torques for electric vehicles which allows the two driving wheels to rotate by being driven by the same power torque independently of the rotational speed of each wheel. The distribution of powers is obtained by means of electronic control means (3) which act upon variable frequency inverters (2, 2') which supply the asychronous motors (1, 1') directly coupled to the wheels (5, 5'). The inverters allow to control simultaneously the efficient value and the frequency of the voltage applied. The control of the units is carried out by using a single controlled system (3) which allows to control at any time the power torque of each motor (1, 1'), adjusting the power supply frequency so that the power torques at each wheel (5, 5') are equal. The system includes a self-locking device which turns the axle into a rigid axle in the case of a break-down of a motor or loss of ground adhesion of one of the wheels.</p> |
