Title :
Optimal PWM design for high power three-level inverter through comparative studies
Author :
Liu, Hyo L. ; Cho, Gyu H. ; Park, Sun S.
Author_Institution :
Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Taejon, South Korea
fDate :
1/1/1995 12:00:00 AM
Abstract :
Comparative studies between harmonic elimination and optimal PWM strategies are given for high power three-level inverter feeding an induction motor. An effective PWM map construction method based on the valid region on the frequency modulation index plane is suggested. Thereby, an optimal map including asynchronous space vector PWM, harmonic elimination and optimal PWM method is generated covering all of the low, middle and high modulation index regions. The PWM map was designed for 1 MVA rated general purpose GTO inverter and implemented with a digital signal processor. Experimental results are presented for 10 kVA prototype
Keywords :
PWM invertors; circuit optimisation; circuit testing; digital signal processing chips; frequency modulation; induction motors; power system harmonics; switching circuits; thyristor convertors; 1 MVA; 10 kVA; GTO inverter; PWM map construction method; asynchronous space vector PWM; digital signal processor; frequency modulation index plane; harmonic elimination; induction motor; modulation index regions; optimal PWM design; three-level inverter; valid region; Digital signal processors; Frequency modulation; Induction generators; Induction motors; Modular construction; Power system harmonics; Pulse width modulation; Pulse width modulation inverters; Signal design; Space vector pulse width modulation;
Journal_Title :
Power Electronics, IEEE Transactions on
