Title :
A novel simulation technique for the analysis of digital asynchronous pulse width modulation
Author :
Mirkazemi-Moud, Mehran ; Williams, Barry W. ; Green, Tim C.
Author_Institution :
Dept. of Comput. & Electr. Eng., Heriot-Watt Univ., Edinburgh, UK
Abstract :
A digital simulation technique based on single Fourier series is used to predict the spectra, including the nonintegral harmonics, generated by digital asynchronous pulse width modulation invertors. The results, with an accuracy of 70 dB, are superior to the results obtained with fast Fourier transform techniques, and offer an alternative to the complex methods based on double Fourier integration and Bessel functions. The technique is applicable to any choice of reference waveform. Output distortion with the introduction of minimum pulse and dead time is studied
Keywords :
circuit analysis computing; digital simulation; invertors; power engineering computing; power system harmonics; pulse width modulation; series (mathematics); Fourier series; asynchronous PWM invertors; dead time; digital simulation; minimum pulse; nonintegral harmonics; output distortion; reference waveform; Analytical models; Circuits; Digital modulation; Fast Fourier transforms; Fourier series; Frequency; Pulse width modulation; Pulse width modulation inverters; Sampling methods; Space vector pulse width modulation;
Journal_Title :
Industry Applications, IEEE Transactions on
