AP16098
UPS Main Control
Experiment Results
Application Note
19
V1.0, 2007-03
5
Experiment Results
Figure 11 shows the measured filtered output voltage waveforms with feedback under
no-load and rated resistant load conditions respectively.
(a) Without Load (b) With Rated Resistant Load
Figure 11
Measured Output Voltage Waveforms
Figure 12(a) records the output transient response waveform with full resistant load
taken ON under line mode without connecting any battery. The waveform for dynamic
performance under battery mode is shown in Figure 12(b).
(a) Line Mode (No Battery) (b) Battery Mode
Figure 12
Output Transient Response
Figure 13 illustrates the short-circuit protection action, where channel 1 is for output
current and channel 4 is for output voltage.
The phase difference between the output voltage and the line voltage is shown in Figure
14, where channel 1 is for the output and channel 4 is for the line power. The time interval
between two zero-crossing points is 95us.
Figure 15 displays the bypass relay and TRIAC actions under overload condition, in
which channel A is for output voltage and channel C is for bypass current.
