Power System Blockset

Series RLC Load

Implement a linear series RLC load.

Library

Elements

Description

The Series RLC Load block implements a linear load as a series combination of R L C elements. At the specified frequency, the load will exhibit constant impedance and its power will be proportional to the square of the applied voltage. Only elements associated with nonzero powers will be displayed in the block icon.

Dialog Box and Parameters

Nominal voltage Vn

The nominal voltage of the load, in volts rms.

Nominal frequency fn

The nominal frequency, in hertz.

Active power P

The active power of the load, in watts.

Inductive reactive power QL

The inductive reactive power QL, in vars. Specify a positive value, or zero.

Capacitive reactive power QC

The capacitive reactive power QC, in vars. Specify a positive value, or zero.

Measurements

Select Branch voltage to measure the voltage across the Series RLC Load block terminals.

Select Branch current to measure the current flowing through the Series RLC Load block.

Select Branch voltage and current to measure the voltage and the current of the Series RLC Load 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
Branch voltage	ub:
Branch current	ib:

Example

The following circuit uses a Series RLC Load block to implement a simple load. This example is available in the psbseriesload.mdl file.

See Also
Series RLC Branch, Parallel RLC Branch, Parallel RLC Load

Series RLC Branch

Simplified Synchronous Machine