Title :
A new approach of continuous waveform modulation
Author :
Zhang, Hao ; Wang, Quincy ; Xu, Mingjin ; Chang, Liuchen
Author_Institution :
Beijing Inst. of Printing, China
Abstract :
This paper presents a novel continuous waveform modulation (CWM) algorithm for sinusoidal converters, especially for high-voltage variable frequency (HVF) AC power conversion applications. The algorithm is based on multi-level inverter topology. Its major advantages include efficiently reducing total harmonic distortion (THD), improving DC voltage utilization and adjusting the output line voltage smoothly. This paper first introduces the principle of CWM and presents the mathematical expressions of CWM in 5 different working stages. Then, CWM is compared with two other algorithms based on the experimental data derived from the same test platform, a 6 kV/680 kW HVF AC drive system. The field test waveforms of CWM are also illustrated in this paper
Keywords :
AC motor drives; harmonic distortion; harmonics suppression; invertors; power conversion harmonics; 6 kV; 680 kW; AC drive system; DC voltage utilization improvement; THD reduction; continuous waveform modulation algorithm; high-voltage variable frequency AC power conversion; multi-level inverter topology; output line voltage adjustment; total harmonic distortion reduction; Circuit topology; Frequency conversion; Low voltage; Printing; Pulse inverters; Pulse width modulation; Pulse width modulation inverters; Shape; Space vector pulse width modulation; Voltage control;
Conference_Titel :
Electrical and Computer Engineering, 2000 Canadian Conference on
Conference_Location :
Halifax, NS
Print_ISBN :
0-7803-5957-7
DOI :
10.1109/CCECE.2000.849669
