| 摘要 |
899,787. Control of several D.C. motors. ATELIERS DE CONSTRUCTIONS ELECTRIQUES DE CHARLEROI. Nov. 18, 1960 [Nov. 23, 1959], No. 39714/60. Class 38 (3). Traction motors 3, 4 are supplied from an engine-driven generator 2 and have series field windings 6, 8 as well as separately-excited field windings 5, 7. For forward operation of the vehicle, the series field windings are energized to assist the separately-excited windings, the free ends of the windings 6, 8 being earthed to the frames of the motors. When the excitation of the windings 5, 7 is reversed to drive the vehicle in the opposite direction, a contactor 11 closes to short-circuit the series field windings. |
