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A NOVEL THREE-PHASE WAVEFORM GENERATOR FOR INVERTER DRIVES
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| Author(s) |
T. C. Green; J. C. Salmon; B. W. Williams |
| Abstract |
A novel digital modulation technique, termed slope modulation, has been developed from delta modulation. The technique naturally copes with some of the common problems encountered with other inverter switching strategies. The main advantages are the well defined minimum on and off times experienced by the switches and the maintainance of full resolution at all output levels. A slope modulator was implemented using standard logic devices and was used as the basis of an entirely digital inverter controller. The nature of the modulator allowed the incorporation of a number of useful practical features such as third harmonic boosting, waveform back tracking and quarter wave symmetry. This was achieved without the use of a microprocessor or any similar complex hardware. The result is a versatile system suitable for production as a gate array. |
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| Filename: | Unnamed file |
| Filesize: | 3.686 MB |
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| Type |
Members Only |
| Date |
Last modified 2021-03-03 by System |
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