Study on Metallized Polypropylene Film Capacitors
and its Change in Dielectric Loss due to the Effect of
End Connection Quality
Journal:
GRENZE International Journal of Engineering and Technology
Authors:
ShivakumaraSwamy R, R.Prakash, K. N Ravi, Sunil kumar A V
Volume:
3
Issue:
3
Grenze ID:
01.GIJET.3.3.123
Pages:
159-164
Abstract
This paper presents the results of the dielectric properties and zinc sprayed ends
quality on electrodes of self healing metallized polypropylene capacitors. Zinc sprayed metal
end connections of metallized film capacitors are the weak link for pulse power applications
which involve discharge times of tens of microseconds and less. This problem will only get
worse with increased capacitor energy density. The present contribution quantifies the
relationship between the ‘‘quality’’ of the end connection and dielectric loss of the capacitor
winding. The analysis suggests that even for very poor end connections, the effect on
dielectric loss of the total capacitor is relatively small. This makes a low stress production
test for end connection qualityproblematic since such tests can only show the totalcapacitor
dissipation factor resulting from various factors.