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A SUBOPTIMAL PREDICTIVE CURRENT CONTROLLER FOR VSI-PWM INVERTERS
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| Author(s) |
Wilfried Hofmann |
| Abstract |
A novel current controller for ac-drives fed by VSI inverter is proposed. It is explained the analytical relation between the current error phasor and its gradient based on a linear prediction. The selection of the output voltage phasor is realised result from the off-line computation of the inequations for the seven inverter output voltages and its error gradients by control options for small and large signal operations. The existence of approximated ranges for the error and motor voltage sectors gives the possibility to use geometrical features dependent on speed ranges. It results in a simple signal-processing for the current controller with a higher sampling rate and lead to a good control behaviour near to the optimum. |
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| Filename: | Unnamed file |
| Filesize: | 2.84 MB |
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| Type |
Members Only |
| Date |
Last modified 2019-08-16 by System |
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