Current Source (Three-Phase)

Ideal three-phase current source

• Library:
• 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:

${I}_{0}=\sqrt{2}{i}_{phase_rms}$

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

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

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

where:

• I0 is the peak phase current.

• iphase_rms is the RMS phase current.

• ia, ib, ic are the respective phase currents.

• 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

expand all

Expandable three-phase port associated with the three phases, a, b, and c.

Electrical conserving port associated with the center of the wye

Parameters

expand all

RMS phase current.

Phase shift, in angular units.

Current 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.

Extended Capabilities

C/C++ Code GenerationGenerate C and C++ code using Simulink® Coder™.

Introduced in R2013b