| 摘要 |
The electrical drive with an asynchronous motor contains a series circuit comprising an in-phase current sensor (1) of the stator of the short-circuit asynchronous motor, a coordinate converter (2), a phase-sensitive rectifier unit (3), and a controllable power source (4) which is connected to the stator windings of the asynchronous motor (5). The other output of the in-phase current sensor (1) is connected to the control input (7) of a frequency generator (8) for the rotor currents, whose output is connected to the input (9) of a reference signal former (10). The other input of the latter is connected to the output of the reference frequency adjuster (12) and its outputs are connected to the reference signal inputs (13, 14, 15) of the unit (3). The electrical drive also contains a rotor rotation frequency multiplier (18), whose inputs (19, 20) are connected to the outputs of the rotation angle sensor (6) of the rotor and of a reference frequency adjuster (12), and whose output is connected to the input (21) of the reference signal former (10). At the same time, the outputs of a sinusoidal signal generator (17) are connected to the inputs (22, 23) of the coordinate converter (2). <IMAGE> |
