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This paper presents a low-cost and effective approach to generate harmonic elimination PWM (HEPWM) waveforms for three-phase voltage-sourced inverters (VSIs). In the developed approach, the off-line computations of switching patterns based on harmonic elimination strategy are stored in EPROM, thereby allowing a microprocessor-free design. With the proposed configuration, the circuits for the adjustments...
Class D amplifiers are becoming the most feasible solution for embedded audio application. However, distortions due to the non-linear nature of switching stage are the main drawback for this amplifier topology. This paper discusses the design and implementation of high fidelity audio class D using sliding mode control scheme. This design method proves to be a cost effective solution for industrial...
Dispersed electrical generation connected into the U.S. utility grid is a promising way to increase energy production. However, to assure technical compatibility of the grid and potentially large numbers of these small generation sources, an engineering evaluation effort is required. Work is presented that is currently under way to test inverter power systems in a grid-connected environment. The technical...
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