AC Current Source
Ideal sinusoidal current source
Library
Electrical Sources
Description
The AC Current Source block represents an ideal current source that maintains sinusoidal current through it, independent of the voltage across its terminals.
The output current is defined by the following equation:
where
| I | Current |
| I0 | Peak amplitude |
| f | Frequency |
| φ | Phase shift |
| t | Time |
The positive direction of the current flow is indicated by the arrow.
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 Upgrade Advisor. For more information, see
the R2013a Release
Notes.
Parameters
- Peak amplitude
Peak current amplitude. The default value is
1A.- Phase shift
Phase shift in angular units. The default value is
0.- Frequency
Current frequency, specified in Hz or units directly convertible to Hz (where Hz is defined as
1/s). For example,kHzandMHzare valid units, butrad/sis not. The default value is60Hz.
Ports
The block has two electrical conserving ports associated with its terminals.