| 摘要 |
<p>PURPOSE:To control a ratio of regenerative brake power and generating brake power continuously by connecting the first inverse conduction thyristor, in which a generating brake resistor is connected in parallel, and the second inverse conduction thyristor in series between the terminals of a motor. CONSTITUTION:The first and second inverse conduction type main thyristors M1, M2 are connected between the terminals of the motor, and the generating brake resistor BR is connected in parallel with the first inverse conduction type main thyristor M1. A series connector of a communtation reactor CL, a commutation capacitor CC and an inverse conduction type commutation thyristor A is connected in reverse-parallel with the first and second inverse conduction type main thyristors M1, M2. When the flowing rates of the inverse conduction type main thyristors M1, M2 are adjusted, the abnormal rise of line voltage can be inhibited because the ratio of the regenerative brake power and the generating brake power can be controlled.</p> |
