Title :
Sampling of discontinuous voltage and current signals in electrical drives: a system approach
Author :
Blasko, Vladimir ; Kaura, Vikram ; Niewiadomski, Walter
Author_Institution :
Rockwell Autom.-Allen Bradley, Mequon, WI, USA
Abstract :
Various methods for the sampling of voltage and current signals in electric drives are analyzed and compared. Two new methods for sampling the discontinuous voltage and current signals in a PWM inverter-fed drive are proposed. The methods are based on sampling the instantaneous values and locally averaged values (over one carrier period) of signals. Analytical expressions for adjustment of digital current regulators and achievable bandwidths with the various sampling methods are derived. The results are experimentally verified
Keywords :
AC motor drives; DC-AC power convertors; PWM invertors; electric current measurement; machine testing; machine theory; signal sampling; voltage measurement; AC motor drive; PWM inverter; bandwidths; digital current regulators; discontinuous current signals sampling; discontinuous voltage signals sampling; sampling methods; AC motors; Analog computers; Digital signal processing; Drives; Frequency conversion; Pulse width modulation; Sampling methods; Signal analysis; Space vector pulse width modulation; Voltage;
Conference_Titel :
Industry Applications Conference, 1997. Thirty-Second IAS Annual Meeting, IAS '97., Conference Record of the 1997 IEEE
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-4067-1
DOI :
10.1109/IAS.1997.643143
