welcome to this labvolt tutorial about
the home energy production Control
Function including four specific
functions this video will introduce you
to the first function of this unit the
singlephase Standalone inverter due to
the complexity of this function it is
suggested to try the Boost Chopper and
pwm inverter from the chopper inverter
control unit first to understand the
basic circuit used in this
function once the chopper inverter
control window is fully open select the
singlephase Standalone inverter from the
list here note that a window may appear
just do as it says or click okay for
automatic
configuration now let's take a look at
the settings of this
function status indicates if the
function is started or
not battery minimum voltage sets the
voltage from which the function will
stop working if E3 reads a value below
this to prevent deep discharge of the
battery
pack Peak voltage
output sets the peak output voltage at
the load in percentage of the value of
the DC bus
here output power limit sets the maximum
power that the singlephase Standalone
inverter will be able to supply to a
load output frequency sets the output
frequency of the pwm inverter giving the
opportunity to supply AC loads of 50 or
60
Herz Q2 Q5 Q3 q6 are the transistors
used by the pwm inverter you can choose
for each one pwm or on or off for
troubleshooting here are the DC bus
control settings in fact these are the
control settings of the Boost
Chopper DC bus voltage command sets the
voltage of the DC bus Q4 the transistor
used by the Boost Chopper again you can
choose pwm on or
off here you have the start stop button
just below the overload light and here
the 3 met to track the duty cycle DC bus
voltage and battery voltage of the
function in real time just hit the
single refresh or continuous refresh
button to see those
values just above those meters is the
electrical diagram of the function
note that E3 E4 and I4 must be connected
exactly as shown here for this function
to work properly for more help you can
rely on the show connection button here
for a complete connection
diagram take a moment to look closely at
the electrical diagram the study of a
schematic diagram always gives important
information about the function you're
using first here is the DC source which
can be a solar panel or a wind turbine
Bine connected to a battery pack on the
other side you have an AC
load here is a boost Chopper which is a
variable dcdc converter bringing low DC
voltage to high DC voltage just after
you get the pwm inverter which has the
ability to convert DC voltage to ac
voltage combined with a low pass filter
at the output you obtain a variable AC
power supply both in amplitude and
frequency from a wind turbine or solar
panels that's what this function is all
about pay attention to every connection
upon starting the
function let's see what we
get the yellow curve here is the output
voltage of the function and the blue
curve is the output current running
through the AC load by looking at the
numbers here we can calculate the
expected output
voltage in fact the Boost Chopper is
requested to maintain a DC bus of 200
volts using the battery pack of 48 volts
which is the case judging by this meter
now in the pwm inverter settings you can
see that the peak output voltage asked
is 85% of the DC bus Which equals 170
volts since the output voltage of the
pwm inverter is ac voltage we get a peak
voltage of 170 volts and an expected RMS
voltage of 120 volt at 60 HZ as asked
here a quick look at the value here on
the scope shows us that the function
works pretty well you can then change
the DC bus voltage command or Peak
output voltage percentage here to obtain
various outputs of AC power don't forget
that the battery minimum voltage and
output power limit settings must be set
to adequate values to protect the
battery pack from any overuse that's it
for the singlephase Standalone inverter