Abstract
Three-phase voltage source inverters are widely used in various power system applications including industrial motor drives, renewable generation systems, active filter and active rectifiers. The main aim of this paper is to present the software design and implementation of a SPWM signal generator system for the three phase inverter with variable frequency-variable voltage magnitude output based on the low cost-high performance of 16 bit digital signal controller dsPIC30f4011. To achieve a fast execution time, all the arithmetic computations are designed and realized by using the fixed point arithmetic technique, whereas the sinusoidal wave value is precalculated and stored in 8-bit wide look up table. The experimental results show the effectiveness of the software realization.
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