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

Volume

1

fYear

1997

fDate

5-9 Oct 1997

Firstpage

682

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Conference, 1997. Thirty-Second IAS Annual Meeting, IAS '97., Conference Record of the 1997 IEEE

Conference_Location

New Orleans, LA

ISSN

0197-2618

Print_ISBN

0-7803-4067-1

Type

conf

DOI

10.1109/IAS.1997.643143

Filename

643143