# Current Source (Three-Phase)

Ideal three-phase current source

**Libraries:**

Simscape /
Electrical /
Sources

## Description

The Current Source (Three-Phase) block models an ideal three-phase current source that maintains sinusoidal currents of the specified magnitude through its terminals, independent of the voltage across the source.

The output current is defined by the following equations:

$${I}_{0}=\sqrt{2}{i}_{phase\_rms}$$

$${i}_{a}={I}_{0}\mathrm{sin}(2\pi ft+\phi )$$

$${i}_{b}={I}_{0}\mathrm{sin}(2\pi ft+\phi -{120}^{\circ})$$

$${i}_{c}={I}_{0}\mathrm{sin}(2\pi ft+\phi +{120}^{\circ}),$$

where:

*I*is the peak phase current._{0}*i*is the RMS phase current._{phase_rms}*i*,_{a}*i*,_{b}*i*are the respective phase currents._{c}*f*is the frequency.*φ*is the phase shift.*t*is the time.

The arrow indicates the positive direction of the current flow. The source has a wye
configuration, and port **n** provides a connection to the center of
the wye.

## Ports

### Conserving

## Parameters

## Extended Capabilities

## Version History

**Introduced in R2013b**