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The Selective Harmonic Elimination Pulse-Width Modulation (SHE-PWM) has been an inclusive research area in the field of Power Converters. This technique offers a tight control of the harmonic spectrum of a given voltage waveform generated by a power electronic converter along with a low number of switching transitions. It involves the solution of non-linear transcendental equation sets representing...
This paper proposes a novel AC/DC/AC voltage source converter without or with a quite small dc-link capacitor. Because an advanced modulation wave reconstruction-SPWM (AMWR-SPWM) technique is adopted which can greatly eliminate the harmonics of output voltage, the DC filter capacitor is greatly decreased or even removed. In addition, the size of the input ac filter and the output ac filter is reduced...
This paper examines the techniques which can be used to generate sinusoidal pulse width modulation (SPWM) utilizing minimal resources of a low-end microcontroller. Different techniques are evaluated, bit-banging look-up table (LUT) routines are advocated for certain purposes, programming algorithms are considered for efficiency, and methods of harmonic suppression are reflected upon. Finally, feedback...
Adopting square wave excitation to drive induction motors (IMs) can substantially reduce inverter switching losses. However, the low-order time harmonics inherent in the output voltage generates parasitic torques that degrade motor performance and reduce efficiency. In this paper, a novel harmonic elimination modulation technique with full voltage control is studied as an interesting and alternative...
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