Ideal constant voltage source
Electrical Sources
The AC Voltage Source block represents an ideal voltage source that maintains sinusoidal voltage across its output terminals, independent of the current flowing through the source.
The output voltage is defined by the following equation:
$$V={V}_{0}\cdot \mathrm{sin}(2\pi \cdot f\cdot t+\phi )$$
where
V | Voltage |
V_{0} | Peak amplitude |
f | Frequency |
φ | Phase shift |
t | Time |
Connections + and – are conserving electrical ports corresponding to the positive and negative terminals of the voltage source, respectively. The current is positive if it flows from positive to negative, and the voltage across the source is equal to the difference between the voltage at the positive and the negative terminal, V(+) – V(–).
Note:
For Release 2012b and earlier, the unit definition for Hz was
rev/s, whereas in R2013a it was changed to be 1/s, in compliance with
the SI unit system. For this block it means that you must specify
frequency in units of Hz or directly convertible to Hz, such as 1/s,
kHz, MHz and GHz. In 2012b and earlier you could also specify frequency
in angular units (such as rad/s or rpm), but this is no longer possible
because the internal equation of the block now uses the 2π conversion
factor to account for the 1/s unit definition. If you use this block
in a model created prior to R2013a, update it by using the |
Peak voltage amplitude. The default value is 1
V.
Phase shift in angular units. The default value is 0
.
Voltage frequency, specified in Hz or units directly convertible
to Hz (where Hz is defined as 1/s). For example, kHz and MHz are valid
units, but rad/s is not. The default value is 60
Hz.
The block has the following ports:
+
Electrical conserving port associated with the source positive terminal.
–
Electrical conserving port associated with the source negative terminal.