6.7. Selected Harmonic Elimination Technique and SHE-PWM
With the selected harmonic elimination (SHE) technique, a desired pair of high harmonic components (i.e., third and fifth or fifth and seventh or any other) may be eliminated from the frequency spectrum of the output voltage of the inverter by creating a pair of symmetrically located gap voltages in each half-cycle of the square-pulse output voltage of the inverter. The implementation of the SHE technique is achieved by using microprocessors or digital signal processors which at the same time can provide optimum generation of gating signals of the semiconductor switches and, consequently, optimum inverter output voltage. Using the SHE technique a very good quality inverter line-to-line voltage ...
Get Power Electronics and Motor Drive Systems now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
