Title :
Dead-time compensation of 3-level NPC inverter for medium voltage IGCT drive system
Author :
Li, Haishan ; Li, Yaohua ; Ge, Qiongxuan
Author_Institution :
Inst. of Electr. Eng., Chinese Acad. of Sci., Beijing, China
Abstract :
In most cases, it is essential to insert a delay time in the switching signals to avoid the damage of the power electronic devices and prevent the shoot-through of the DC-link. This causes the dead-time effect and it can be minimized to improve the performance of inverters. In this paper, a novel method, which can eliminate the deviation of the output voltage in every PWM period and compensate the dead-time effect, is proposed. This method is designed for the medium voltage IGCT drive system and is implemented in a real drive system. Both simulation and experimental results verified the effectiveness of the proposed method.
Keywords :
PWM invertors; switching convertors; thyristor convertors; variable speed drives; PWM inverter; dead-time effect compensation; delay time; medium voltage IGCT drive system; power electronic device; switching signal; Decoding; Delay effects; Insulated gate bipolar transistors; Leg; Medium voltage; Power electronics; Pulse width modulation; Pulse width modulation inverters; Thyristors; Variable speed drives;
Conference_Titel :
Power Electronics Specialists Conference, 2004. PESC 04. 2004 IEEE 35th Annual
Print_ISBN :
0-7803-8399-0
DOI :
10.1109/PESC.2004.1355098
