UNBALANCED PWM CONVERTER ANALYSIS AND CORRECTIVE MEASURES Conference Paper

abstract

• The analysis of an unbalanced PWM AC-to-DC converter by the transfer function approach is presented. The proposed analysis procedure provides for closed-form assessment of all harmonics generated under unbalanced operating conditions by suitably decomposing the converter transfer function into positive and negative sequence components. A three-phase converter operating with programmed PWM patterns is fully analyzed. The distortion at the output of the PWM converter is evaluated under unbalance. The increase in distortion under unbalance is attributed primarily to the appearance of a second-harmonic component. An algorithm for selectively cancelling the generated second-harmonic component at the converter output under unbalance is presented. Suitable implementation techniques for the proposed algorithm are also discussed.

name of conference

• Conference Record of the IEEE Industry Applications Society Annual Meeting

authors

• Ehsani, Mehrdad
• Enjeti, Prasad

published proceedings

• CONFERENCE RECORD OF THE 1989 IEEE INDUSTRY APPLICATIONS SOCIETY ANNUAL MEETING, PTS 1-2

author list (cited authors)

• ENJETI, P. N., ZIOGAS, P. D., & EHSANI, M.

citation count

• 44

complete list of authors

• ENJETI, PN||ZIOGAS, PD||EHSANI, M

publication date

• January 1989

publisher

• Institute of Electrical and Electronics Engineers (IEEE)  Publisher

published in

• Conference Record of the IEEE Industry Applications Conference  Journal

keywords

• 40 Engineering
• 4008 Electrical Engineering
• 4009 Electronics, Sensors And Digital Hardware

Digital Object Identifier (DOI)

• 10.1109/IAS.1989.96745

start page

• 861

end page

• 870

issue

• pt 1

URL

• http://dx.doi.org/10.1109/ias.1989.96745