SimPowerSystems

AC Voltage Source

Implement a sinusoidal voltage source

Library

Electrical Sources

Description

The AC Voltage Source block implements an ideal AC voltage source. The generated voltage U is described by the following relationship:

Negative values are allowed for amplitude and phase. A 0 frequency specifies a DC voltage 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 voltage, in volts (V).

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

Select Voltage to measure the voltage across the terminals of the AC Voltage 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
Voltage	Usrc:

Example

The power_acvoltage demo uses two AC Voltage Source blocks at different frequencies connected in series across a resistor. The sum of the two voltages is read by a Voltage Measurement block.

See Also

Controlled Voltage Source, DC Voltage Source, Multimeter

Active & Reactive Power

Asynchronous Machine