This is a slightly improved version of a power limited source. It uses conditional expressions to define the voltage in the three ranges of output current; 0-50 A, 50-100 A, >100 A. It also uses a 0 V source to measure the output current rather than a small resistor. It also uses a DC sweep rather than a ramped load current in a transient simulation to exercise the source.
The first version produces the correct voltage vs current profile, but the current through the source is not limited to 100 A. The second version adds current limiting to the source, which simplifies the conditional expression, but requires an additional ideal diode across the load to carry any current above the current limit.
power limited source.qsch (7.9 KB)