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EMPLOYING ADVANCED SCHEME OF A DIGITAL PULSEWIDTH MODULATION FOR DATA TECHNIQUES | ||
| AL-TAQANI | ||
| Article 1, Volume 24, Issue 6, 2011, Pages 63-73 | ||
| Author | ||
| Mohammed Haseen B | ||
| Abstract | ||
| Advanced pulsewidth modulation (PWM) techniques for inverters show the high-efficiency ac drives with low torque and speed pulsations and with reduced losses. A digital control scheme for a thyristor inverter is presented, where firing patterns satisfying given requirements like harmonic elimination or loss minimization have been calculated and stored in Programmable Read-Only Memory (PROM). Moreover, such a control permits a continuous variation of output voltage over the modulation range for full inverter utilization. Evaluation using a 22 KW induction motor drive verified that the control provides a clean frequency spectrum over the operating range of the drive (0-100 Hz). | ||
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