e. Experimental Results
The designed ultra-capacitor module has been tested on a
variable speed drive used in an application with demand for
15s braking at nominal power and ride-through capability of at
least Is at nominal power. Experimental waveforms of the
mains current, the dc bus voltage and the ultra-capacitor
voltage and current are depicted in Fig. 11 and Fig. 12.
Because of some limitation of the experimental set-up, the
ultra-capacitor was not tested under full rated power. Braking
capability was tested at 50% of the rated power (Fig. 11),
while ride-through capability was tested at 75% of the rated
power (Fig. 12).