Title :
Ripple-Free Sampling of Current Signals in Drives with Carrier-based PWM Patterns
Author :
Lu, Haihui ; Yin, Qiang ; Kerkman, Russel J. ; Nondahl, Thomas A.
Author_Institution :
Rockwell Autom. Res. Co. Ltd., Shanghai
Abstract :
This paper investigated the possibility of detecting the instantaneous fundamental component of current signals in electrical drives by sampling the current at the carrier´s peak/valley (midpoints of zero vectors V0 and V7) in carrier-based PWM pulse patterns. PWM pattern that does not employ zero vectors or employs only one zero vector was also investigated. The observation can be extended to any carrier-based PWM patterns in which the time sequencing of the selected vectors are symmetrical in each carrier period. The conclusion was verified from both simulation and experiment
Keywords :
electric drives; pulse width modulation; signal detection; signal sampling; carrier-based PWM patterns; current signal detection; electrical drives; ripple-free signal sampling; time sequencing; Automation; Counting circuits; Digital signal processing; Paper technology; Power harmonic filters; Pulse width modulation; Pulse width modulation converters; Sampling methods; Space vector pulse width modulation; Voltage; current; discontinuous; drives; pulse width modulation; sampling;
Conference_Titel :
Power Electronics and Motion Control Conference, 2006. IPEMC 2006. CES/IEEE 5th International
Conference_Location :
Shanghai
Print_ISBN :
1-4244-0448-7
DOI :
10.1109/IPEMC.2006.4778152
