Microchip Technology PLECS, Быстрый старт

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2020 Microchip Technology Inc. DS50002997A-page 14
PLECS MODEL
QUICK START GUIDE
FOR VIENNA PFC
Chapter 4. Starting a Simulation
To run the model, select Simulation / Start or press CTRL+T. This will run the default
configuration of a 10-second simulation time, 230 V
RMS
line voltage (corresponding to
a 400 V
RMS
three-phase voltage), 50 Hz line frequency, and 7.5 kW load. To adjust
these settings, select Simulation/Simulation parameters or press Ctrl+E. In the Solver
tab, adjust the highlighted field below for the desired stop time.
FIGURE 4-1: Simulation Parameter Vienna Stop Time.
To adjust the line and load settings, select the Initialization tab. The commands listed
in this window below are run once at the start of simulation. The syntax used to define
the variables is the same used in a Matlab or Octave script.
In PLECS, all component values are purely numerical without any units specified. Volts
is used for voltage, Hertz for frequency, and Ohms for resistance. Matlab e-notation
(scientific notation) can be used to define values. For example, a 10k
Ω resistor can be
set to
10000
or
10e3
. The variable for the load resistor, R
load
, is set to:
EQUATION 4-1:
Entered into PLECS as:
Rload = 700^2/7.5e3;
R
load
700 V
 
2
7.5 kW
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