Analysis And Realization Of Three Algorithms For SPWM Waves

As the kernel technology of modern power electronics,frequency conversion technology unites the technologies of modern electron-ics,information and intelligence.The generating and controll of Sinusoidal Pulse-Width Modulation (SPWM) waveforms is one of the core technology of frequency conversion.Three algorithms for SPWM waves are analyzed in this paper,which are symmetry rule sampling method, asymmetry rule sampling method and equiarea algorithm.The SPWM waves are realized by TMS320F2812 DSP.The experimetal results show that symmetry rule sampling method has advantages of fast speed and converting frequency easily.They also show that the SPWM waves gen-erated by equiarea algorithm have advantages of high precision,small harmonic value of output waves and good symmetry.And the perfor-mances of the SPWMwaves by asymmetry rule sampling method are between the two algorithms above.