| 摘要 |
The device contains a first power controlling element containing semiconductors, for the motor drive in a first direction of torque and a second power controlling element containing semiconductors, for the motor drive in the other direction of torque. An isolating device is provided so that, at least if a particular power controlling element fails, it can be electrically isolated from the rest of the circuit and the rest of the circuit can then be connected instead to the other power controlling element. This means that down times are reduced in the case of failure of one power controlling element. …<IMAGE>… |
