Performance analysis of three-phase inverters controlled by synchronous delta-modulation systems

Author

Mertens, A.

Author_Institution

Inst. for Power Electron. & Electr. Drives, Aachen Univ. of Technol., Germany

fYear

1992

fDate

4-9 Oct 1992

Firstpage

779

Abstract

It is shown that the output current harmonic distortion and average switching frequency of synchronous delta-modulation (DM) systems can be calculated analytically in spite of the quasi-stochastic behavior of the modulator output. Under the assumption of constant link frequency and a large ratio of link to output frequency, results are derived for three-phase sigma-delta modulation, space-vector-based sigma-delta modulation, and current regulated DM. The results hold for any shape of the inverter input voltage (including DC). The output current harmonic distortion of resonant link inverters is compared with that of conventional hard switching of pulse width modulation (PWM) inverters

Keywords

harmonics; invertors; modulation; PWM; average switching frequency; constant link frequency; hard switching; output current harmonic distortion; pulse width modulation; quasi-stochastic behavior; resonant link inverters; space-vector-based sigma-delta modulation; synchronous delta-modulation systems; three-phase inverters; three-phase sigma-delta modulation; Delta modulation; Delta-sigma modulation; Harmonic analysis; Harmonic distortion; Performance analysis; Pulse width modulation inverters; Resonance; Shape; Switching frequency; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Society Annual Meeting, 1992., Conference Record of the 1992 IEEE

Conference_Location

Houston, TX

Print_ISBN

0-7803-0635-X

Type

conf

DOI

10.1109/IAS.1992.244317

Filename

244317