Title :
A novel PWM scheme for a three-level voltage source inverter with GTO thyristors
Author :
Lee, Yo-Han ; Suh, Bum-Seok ; Hyun, Dong-seok
Author_Institution :
Dept. of Electr. Eng., Hanyang Univ., Seoul, South Korea
Abstract :
This paper presents a new PWM scheme for a three-level GTO inverters based on space voltage vectors. By this PWM method, the harmonic components of the output voltage can be minimised by avoiding the minimum pulse width limitation problem of the GTO and voltage balancing of DC link capacitors can also be kept. The principle of the PWM method and the voltage vector selection procedure are described in detail. Computer simulation and experimental results verify that the proposed PWM control scheme is suitable for high power and high voltage three-level GTO inverters applied to induction motor drives
Keywords :
PWM invertors; PWM power convertors; circuit analysis computing; circuit testing; control system analysis computing; induction motor drives; power capacitors; power engineering computing; power system harmonics; switching circuits; thyristor convertors; voltage control; DC link capacitors; GTO thyristors; PWM VSI; computer simulation; experiments; harmonic components; induction motor drives; output voltage; space voltage vectors; three-level voltage source inverter; voltage balancing; voltage vector selection procedure; Capacitors; Computer simulation; Diodes; Pulse width modulation; Pulse width modulation inverters; Space vector pulse width modulation; Thyristors; Topology; Voltage control; Zero voltage switching;
Conference_Titel :
Industry Applications Society Annual Meeting, 1994., Conference Record of the 1994 IEEE
Conference_Location :
Denver, CO
Print_ISBN :
0-7803-1993-1
DOI :
10.1109/IAS.1994.377573
