Title :
Practical implementation of 3-phase and 3-level microprocessor sampled PWM techniques
Author :
Maani, G.G. ; Toh, P.S. ; Sng, Y.H. ; Choo, F.H.
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore
Abstract :
Two methods for practically implementing 3-level PWM sampling schemes for a 12-device inverter bridge are presented. They offer advantages of reducing the computational requirements for implementing them, as well as the ability of programming wider PWM pulses into a microprocessor. Wider PWM pulses result in a more accurate practical representation of the PWM waveform. One scheme offers the additional advantage of reduced potential shift between system neutral and load star points. The benefits gained are at the expense of an error introduced to the harmonic spectra. Graphical and tabulated results are shown.<>
Keywords :
bridge circuits; invertors; microcomputer applications; power engineering computing; power system harmonics; pulse width modulation; 12-device inverter bridge; 3-level microprocessor sampled PWM techniques; 3-phase; PWM pulses; PWM waveform; harmonic spectra error; load star point; reduced potential shift; system neutral point; Bridge circuits; Hardware; Microprocessors; Pulse circuits; Pulse generation; Pulse inverters; Pulse width modulation; Pulse width modulation inverters; Sampling methods; Space vector pulse width modulation;
Conference_Titel :
TENCON '93. Proceedings. Computer, Communication, Control and Power Engineering.1993 IEEE Region 10 Conference on
Conference_Location :
Beijing, China
Print_ISBN :
0-7803-1233-3
DOI :
10.1109/TENCON.1993.320703
