voltage loop
charging system has been established.Afte
r that according
the engineering design
methods of continuous system,the transfer
functions of current regulator and voltage
regulator have been figure out.The result
has been verified by
MATLAB simulation,
that is in keeping with optimal second-ord
er system.In addition,the peaurbation infl
uence of photovoltaic cell has been analyzed.
And then some solutions have been put forwar
d.
The
hardware
structure
of PV charging/discharging controller
has also
been
deeply discussed in this
paper.The
main components selection and parameter se
tting
have been finished.The sep.down DC/DC.BUC
K circuit,the
MOSFET
drive circuit,
PWM
modulator circuit,voltage and current fee
dback circuit,current and voltage
regulator circuit have been designed.
This
paper adopts PIC 1 6F877A to
on
manage
the working state of the system,the of the s
oftware
paper also elaborates
the whole design
frame
and the
design
II