| 摘要 |
<p>At least one embodiment of the invention generally relates to a drive system for a facility having an alternating-current isolated network, in particular for a ship or an offshore platform, including a three-phase drive machine, which can be operated both as a motor and as a generator, and including a converter having a direct-current intermediate circuit having an intermediate circuit voltage. At least one embodiment of the invention aims to provide a way of avoiding undesired and/or impermissible voltage and/or frequency increases in the alternating-current isolated network. For this purpose, the drive system includes according to the invention an energy absorbing device arranged in the intermediate circuit, which energy absorbing device includes at least one energy absorber, which preferably includes at least one electrical resistor, for absorbing at least a part of the electrical energy that the three-phase drive machine generates in generator operation and outputs to the intermediate circuit by way of the motor-side current converter of the converter. The energy absorber can be activated by the energy absorbing device according to the polarity of the intermediate circuit voltage. The energy absorbing device is preferably variable regarding an absorption of electrical braking power of the three-phase drive machine.</p> |
