| 摘要 |
<p>PURPOSE:To make a main circuit contactless by using a squirrel-cage induction machine as a driving motor and a gate turn-off thyristor(GTO) for driving and braking circuits. CONSTITUTION:An output of an AC generator 3 driven by an engine 1 is supplied to squirrel-cage induction motors 12, 13 via rectifier 4 and GTO inverters 10, 11. If an accelerator pedal 18 is worked, a power reference value Pref is supplied from a power detector 17 to an inverter control circuit 42 as the number of revolutions of the engine 1 rises. Said inverter control circuit 42 controls GTO inverters 10, 11 in accordance with the power reference value Pref, and rotational speeds w1, w2 and operating frequencies f1, f2 of the motors 12, 13. If a brake pedal 19 is worked, a brake reference value Bref is supplied to the inverter control circuit 42. At the same time, the brake reference Bref is supplied to a control circuit 43 of a braking GTO 9.</p> |
