A method for predicting the expected life of bus capacitors

Author

Gasperi, Michael L.

Author_Institution

Adv. Technol. Labs., Rockwell Autom., Milwaukee, WI, USA

Volume

2

fYear

1997

fDate

5-9 Oct 1997

Firstpage

1042

Abstract

Predicting the expected life of motor drive bus capacitors is complicated by several factors: the equivalent series resistance of aluminum electrolytic capacitors is frequency and temperature sensitive; the ripple current is a composite waveform; and the capacitor expected life is very sensitive to operating temperature. This paper describes a method that addresses all these factors by developing separate models for capacitor equivalent series resistance, motor drive circuitry, heat transfer conditions and capacitor life

Keywords

electrolytic capacitors; motor drives; power capacitors; thermal analysis; aluminum electrolytic capacitors; capacitor life; composite waveform; equivalent series resistance; expected life prediction; heat transfer conditions; motor drive bus capacitors; motor drive circuitry; operating temperature; ripple current; Aluminum; Capacitors; Dielectric losses; Frequency; Heat transfer; Heating; Motor drives; Paramagnetic resonance; Temperature sensors; 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.1997.628989

Filename

628989