| 摘要 |
<p>A circuit arrangement is disclosed for supplying an electric machine from a d-c voltage source. The circuit arrangement comprises a self-commutating inverter having valve branches that can be fired and extinguished and d-c voltage inputs to which electronic switching members are connected. In accordance with the invention, a capacitor is connected to the output of the inverter via a rectifier, and the d-c voltage outputs of the latter are connected via current paths with the poles of the d-c voltage source. To obtain at least partial recovery of the energy stored in the capacitor ohmic resistors are arranged in the current paths. Complete energy recovery is, in turn, realized by arranging controlled electronic valves in the current paths.</p> |
