| 摘要 |
1. Circuit arrangement for regrouping for driving/braking of at least two drive units (I, II) comprising asynchronous motors, in particular three-phase asynchronous motors (8, 17) in a traction drive unit, the asynchronous motors (8, 17) each being fed via a bridge circuit and a self-controlled inverter (7, 16), located in the diagonal of the bridge, from a direct-current source (1), one half of the bridge consisting of chopper resistors (2, 11) connected in the direction of the direct-voltage in series with an oppositely polarised freewheeling diode (3, 12) and the other half of the bridge consisting of a feed back diode (10), polarised in the opposite direction of the direct voltage, connected in series with a switch (9) which is open in braking operation, characterised in that for two or more inverters (7, 16) in each case the two halves of the bridge are combined to a common switching branch consisting of a common feed back diode (10) and a common switch (9). (Figure 1). |
