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QUASI -SLIDING MODE APROACH TO DIRECT VOLTAGE MODULATION FOR FREQUENCY-CONTROLLED VSI DRIVES
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| Author(s) |
V. Oleschuk |
| Abstract |
Sliding principle of direct coding pulsewidth modulation of line-to-line voltage for voltage source drive converters has been presented and
described. The methodology is based on smooth continuous variation of voltage
due to programmed quasi-sliding control of special signals in waveform during the whole adjustment range. Control process is executed here under
condition of identification of voltage pulse patterns with output frequency of the system and input voltage of inverter. Basic laws of modulation are described in this case by the simple closed-form algebraic correlations. It is possible to realize different combined algorithms of modulation both scalar and vector on the base of the methodology worked out. It has been given an example of typical control for power adjustable speed drive system consisting from starting mode control subrange and from rated control mode. |
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| Filename: | Unnamed file |
| Filesize: | 572.8 KB |
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| Type |
Members Only |
| Date |
Last modified 2016-01-08 by System |
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