| 摘要 |
<p>With an electric drive system in which an engine, a generator, converting devices, and a motor are arranged in series or a series hybrid drive system that a capacitor is used in conjunction with the electric drive system, an object is to ensure a driving force during a failure in the converting devices, to achieve favorable conditions of a fuel consumption of the engine and exhaust gas during use in situations other than the failure, and to reduce the number of line-up of generator and motors when producing movable bodies appropriate to purposed cruising speeds. To achieve the object, each of the drive systems is provided with a function to determine a cruising speed of the movable body, and configured such that a pole quantity of the generator and a pole quantity of the motor each can be changed over. When it is determined that the movable body is driving at a cruising speed, the drive system connects the generator directly to the motor via the bypass unit, changes over the pole quantity of the generator and the pole quantity of the motor in accordance with the cruising speed, and drives the movable body.</p> |
