7.0: Applications (continued)
PSIM-AC PSIM-DC PSIM-5V
Volt drop V1 is calculated in a similar way to the previous example except there is only a single cable and 3 Orbit
modules. The PSIM supplies power to remaining modules and are calculated separately. The long communications cable does not carry supply current and so has no affect on volt drops.
Calculation for V1 volt drop | = cable + module (3 off) |
| = (15.2 x 3) + 0.04(3+2+1) |
| = 46 mV |
Then approximate voltage at end of network | = nominal supply voltage - calculated volt drop |
=5.1 - 0.046
=5.054 V
i.e. greater than 4.75 Vdc; the minimum working voltage.
Calculation for V2 volt drop | = PSIM + module (3 off) |
| = (5.3 x 3) + 0.04(3+2+1) |
| = 16 mV |
Then approximate voltage at end of network | = nominal supply voltage - calculated volt drop |
| = 5.1 - 0.016 |
| = 5.084 V |
i.e. greater than 4.75 Vdc; the minimum working voltage.
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