Digitalized Method of the Inverter Harmonic Elimination Model and Its Error Analysis
Xie Yunxiang,Huang Yuqing,Zhou Lian
(Electrical Power College,South China University of Technology,Guangzhou 510640,China)

Abstract: The digitalized methods of harmonic elimination PWM (pulse width modulation） control model by using Taylor series and identical approximation is studied.The digitalized model calculation results are compared with the actual model calculation results．There is a little error while the digitalized model is used, but its influence on some special low order harmonics is much little． The output spectrum is also satisfied even if the timing control error is considered.The experiments show that the results calculated by the digitalized model are satisfied, the machine runs smoothly, and its current wave is approximately sinusoidal.
Keywords: inverter;harmonic elimination model;digit control