| 摘要 |
PURPOSE:To make regenerative and dynamic two-functioned braking possible without additional implementation of a chopper dynamic braking. CONSTITUTION:When regenerative braking is active a regenerated current which is flowing from DC motor 2, 3 to a DC power source 1 is controlled by means of on-off operation of choppers 4, 5. And when enough load can not be obtained to absorb a regenerating power dynamic braking action is controlled by a current which is flowing through resistors 15, 16 for dynamic braking being controlled by means of on-off control of chopper 4, 5 and a thyristor 12. By this arrangement regenerative and dynamic two-functioned braking is made possible without any exclusive chopper for dynamic braking. |
