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PREDICTIVE SPEED AND CURRENT CONTROL FOR D.C. DRIVES
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| Author(s) |
D. Schröder; H. Wanner |
| Abstract |
Current- and speed-control of a d.c.-motor fed by a line commutated converter is a well known strategy with conventional control. But with these conventional control techniques the characteristics of the system are used only to a very restricted extent. With a special predictive control algorithm this nonlinear controlled system can be utilized to its physical limits. The predictive control algorithm has been realized on a multi-microprocessor system with the actual precalculation performed by a signal processor. A modification of the prediction parameter equations yields a greatly improved stationary accuracy. For identification of the process parameters a special method has been adopted that uses comparison of precalculated and real armature currents. The behaviour of the whole current control system is discussed. Especially the consequences for a superimposed speed controller are derived and a suitable speed control method is shown. Experimental results for the above topics are presented. |
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| Filename: | Unnamed file |
| Filesize: | 3.52 MB |
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| Type |
Members Only |
| Date |
Last modified 2019-08-02 by System |
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