AC Voltage Source

Ideal constant voltage source

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Libraries:
Simscape / Foundation Library / Electrical / Electrical Sources

Description

The AC Voltage Source block represents an ideal voltage source that maintains sinusoidal voltage across its output terminals, independent of the current flowing through the source.

The output voltage is defined by the following equation:

$$V=V_0\cdot \sin (2\pi \cdot f\cdot t+\phi )$$

where:

• V is voltage.

• V₀ is peak amplitude.

• f is frequency.

• φ is phase shift.

• t is time.

Connections + and - are conserving electrical ports corresponding to the positive and negative terminals of the voltage source, respectively. The current is positive if it flows from positive to negative, and the voltage across the source is equal to the difference between the voltage at the positive and the negative terminal, V(+) – V(-).

Examples

Nonlinear Bipolar Transistor

An implementation of a nonlinear bipolar transistor based on the Ebers-Moll equivalent circuit. R1 and R2 set the nominal operating point, and the small signal gain is approximately set by the ratio R3/R4. The 1uF decoupling capacitors have been chosen to present negligible impedance at 1KHz. The model is configured for linearization so that a frequency response can be generated.

• Open Model

Ports

Conserving

+ — Positive terminal

electrical

Electrical conserving port associated with the source positive terminal.

- — Negative terminal

electrical

Electrical conserving port associated with the source negative terminal.

Parameters

Peak amplitude — Peak voltage amplitude

1 V (default) | scalar

Peak voltage amplitude.

Phase shift — Phase shift in angular units

0 deg (default) | scalar

Phase shift in angular units.

Frequency — Voltage frequency

60 Hz (default) | positive scalar

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

Version History

Introduced in R2007a