| 摘要 |
<p>In the case of a converter injecting a voltage, an angle regulator, to which a predetermined nominal load angle (wif<*>) is supplied, is used to inject the load angle, i.e. the angle between the field axis and the stator current vector. In order to form the actual load angle associated with wif<*>, from the stator-oriented actual current angle (wis) picked-off via a current detector (I-DET) on the machine, a decoupling computing mechanism (CAL) calculates the field-oriented angle (wuf<*>) of the associated field-oriented nominal voltage vector from the predetermined components of the field-oriented nominal current vector and subtracts this from the stator-oriented angle (wus) of the actual voltage vector. The actual load angle (wif) is then produced as wis - wus + wuf<*>. The output signal of the angle regulator (W-REG) and of the decoupling computing mechanism (CAL) form the input parameters of the control set for a voltage-injecting converter (PWR) supplying the machine, on which converter the stator-oriented voltage angle (wus) can be picked off. …<IMAGE>… </p> |
