SimPowerSystems

Parallel RLC Load

Implement a linear parallel RLC load

Library

Elements

Description

The Parallel RLC Load block implements a linear load as a parallel combination of RLC elements. At the specified frequency, the load exhibits a constant impedance. The active and reactive powers absorbed by the load are proportional to the square of the applied voltage.

Only elements associated with nonzero powers are displayed in the block icon.

Dialog Box and Parameters

    Nominal voltage Vn

The nominal voltage of the load, in volts RMS (Vrms).

Nominal frequency fn

The nominal frequency, in hertz (Hz).

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 0.

Capacitive reactive power QC

The capacitive reactive power QC, in vars. Specify a positive value, or 0.

Measurements

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

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

Select Branch voltage and current to measure the voltage and the current of the Parallel RLC Load 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
Branch voltage	Ub:
Branch current	Ib:

Example

The power_paralload demo uses a parallel RLC load block to implement a load.

See Also

Multimeter, Parallel RLC Branch, Series RLC Branch, Series RLC Load

Parallel RLC Branch

Permanent Magnet Synchronous Machine