Power System Blockset

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 zero frequency specifies a DC current source. Negative Frequency is not allowed, otherwise Simulink signals an error, and the block will display a question mark in the block icon. You can modify the three source 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.

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

Select 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 Measurement listbox of the Multimeter block, the measurement will be identified by a label followed by the block name.

Measurement	Label
Current	i Src:

Example

Parallel connection of two AC Current Source blocks is used to sum two sinusoidal currents in a resistor.

This circuit is available in the psbaccurrent.mdl file.

See Also

Controlled Current Source, Multimeter

Alphabetical List of Blocks

AC Voltage Source