Sampling of discontinuous voltage and current signals in electrical drives: a system approach

Author

Blasko, Vladimir ; Kaura, Vikram ; Niewiadomski, Walter

Author_Institution

Standard Drives Div., Rockwell Autom.-Allen Bradley Company, Mequon, WI, USA

Volume

34

Issue

5

fYear

1998

Firstpage

1123

Lastpage

1130

Abstract

Various methods for sampling of voltage and current signals in electrical drives are analyzed and compared, two new methods for sampling the discontinuous voltage and current signals in a pulsewidth modulation 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

electric current measurement; electric drives; machine testing; machine theory; signal sampling; voltage measurement; achievable bandwidths; carrier period; digital current regulators; discontinuous current signal sampling; discontinuous voltage signal sampling; electrical drives; instantaneous values; locally averaged values; pulsewidth modulation drive; system approach; AC motors; Analog computers; Bandwidth; Drives; Industry Applications Society; Pulse modulation; Pulse width modulation; Sampling methods; Space vector pulse width modulation; Voltage;

fLanguage

English

Journal_Title

Industry Applications, IEEE Transactions on

Publisher

ieee

ISSN

0093-9994

Type

jour

DOI

10.1109/28.720453

Filename

720453