SimPowerSystems

AC Current Source

Implement a sinusoidal current source

Library

Electrical Sources

Description

The AC Current Source block implements an ideal AC current source. The positive current direction is indicated by the arrow in the block icon. The generated current I is described by the following relationship:

Negative values are allowed for amplitude and phase. A 0 frequency specifies a DC current source. Negative frequency is not allowed; otherwise, Simulink signals an error, and the block displays a question mark in the block icon. You can modify the first three block parameters at any time during the simulation.

Dialog Box and Parameters

Peak amplitude

The peak amplitude of the generated current source, in amperes (A).

Phase

The phase in degrees (deg).

Frequency

The source frequency in hertz (Hz).

Sample time

The sample period in seconds (s). The default is 0, corresponding to a continuous source.

Measurements

Selects Current to measure the current flowing through the AC Current Source block.

Place a Multimeter block in your model to display the selected measurements during the simulation. In the Available Measurements list box of the Multimeter block, the measurement is identified by a label followed by the block name.

Measurement	Label
Current	Isrc:

Example

The psbaccurrent.mdl demo uses two AC Current Source blocks in parallel to sum two sinusoidal currents in a resistor.

See Also

Controlled Current Source, Multimeter

abc_to_dq0 Transformation

Active & Reactive Power