Current Source (Three-Phase)

R2026b

Ideal three-phase current source

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  • Current Source (Three-Phase) block

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:

I0=2iphase_rms

ia=I0sin(2πft+φ)

ib=I0sin(2πft+φ−120∘)

ic=I0sin(2πft+φ+120∘),

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

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

Electrical conserving port associated with the center of the wye.

Parameters

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Whether to model composite or expanded three-phase ports.

Composite three-phase ports represent three individual electrical conserving ports with a single block port. You can use composite three-phase ports to build models that correspond to single-line diagrams of three-phase electrical systems.

Expanded three-phase ports represent the individual phases of a three-phase system using three separate electrical conserving ports.

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.

Programmatic Use: Add Block

To add the block programmatically, use the add_block function with one of these library block paths as the source.

"ee_lib/Sources/Current Source (Three-Phase)"

Example: add_block("ee_lib/Sources/Current Source (Three-Phase)","myModel/myBlock",MakeNameUnique="on")

Extended Capabilities

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

Version History

Introduced in R2013b

See Also

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