Title :
DC link current in PWM inverters with unbalanced and nonlinear loads
Author :
Cross, A.M. ; Evans, P.D. ; Forsyth, A.J.
Author_Institution :
Sch. of Electron. & Electr. Eng., Birmingham Univ., UK
fDate :
11/1/1999 12:00:00 AM
Abstract :
A method is described for calculating the DC link currents of a three-phase inverter for unbalanced, balanced, linear and nonlinear loads. The derived equations give the magnitude and phase of the mth DC link current harmonic in terms of the phase currents and the Fourier coefficients of the inverter phase voltage. The derived equations are validated using a 1 kW three-phase inverter with various balanced/unbalanced linear and nonlinear loads
Keywords :
PWM invertors; load (electric); power conversion harmonics; 1 kW; DC link current; DC link current harmonic; Fourier coefficients; PWM inverters; balanced loads; inverter phase voltage; linear loads; nonlinear loads; phase currents; three-phase inverter; unbalanced loads;
Journal_Title :
Electric Power Applications, IEE Proceedings -
DOI :
10.1049/ip-epa:19990528
