Conclusions
The circuit as a whole was certainly
very challenging. Creating a working simulation was particularly difficult,
compounded by the fact that many components found in Psched were not
actually modeled. The analysis of the circuit by hand was perhaps
even more difficult, with the complexity of the equations requiring
careful coding in Matlab to solve and graph. By far the most difficult
procedure for the process, however, was the hardware implementation.
No matter what we tried, nothing worked on the first try. More importantly,
it was not possible to achieve the correct output voltage. In order
to achieve functionality, we reduced the input voltage from 24V to
6V so as to reduce the input current and find a solution that was
able to be realized in the lab. Woefully, the frequency we used along
with the components chosen did not function as we had planned. Rather
than a -12V at the output, we only were able to achieve a -3V at best
and more consistently, -2.5V. The circuit is well on its way to realization
but due to restrictions on variables such as time and components,
we were unable to realize the complete functionality of the circuit
we had originally set out to build. The testing seems very feasible
as we learned through research, but future work would be required
on our converter before a second, Pb free prototype can be built.
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