Vf Controller - MapleSim Help

Online Help

All Products    Maple    MapleSim


Home : Support : Online Help : MapleSim : MapleSim Component Library : Electrical : Machines : Utilities : componentLibrary/electrical/machines/utilities/VfController

Vf Controller

Voltage-Frequency Controller

 

Description

Equations

Variables

Connections

Parameters

Modelica Standard Library

Description

The Voltage Frequency Controller (or Vf Controller) component is a simple Voltage-Frequency Controller. The amplitude of the voltage is linearly dependent (Vnomfnom) on frequency (input signal u), but limited by Vnom (nominal RMS voltage per phase). The output consists of m sine waves with amplitudes as described above, They are intended to feed an m-phase Signal Voltage block. Phase shifts between sine-waves may be chosen by the user; the default values are k1mπ for k from 1 to m.

Equations

yk=Asinx+Φk+φcomm

A&equals;2Vnom{ufnomu<fnom1otherwise

x&period;&equals;2πu

Variables

Name

Units

Description

Modelica ID

x

rad

Integrator state

x

A

V

Amplitude of sine wave

amplitude

Φ

V

m-Vector of phase shifts; set by orientation

 

Connections

Name

Description

Modelica ID

u

Real input signal; frequency (Hz)

u

y

m-vector of real output signals

y

Parameters

Name

Default

Units

Description

Modelica ID

m

3

 

Number of phases

m

orientation

[1]

rad

Orientation of phases

orientation

Vnom

 

V

Nominal RMS voltage per phase

VNominal

fnom

 

Hz

Nominal frequency

fNominal

φcomm

0

rad

Common phase shift

BasePhase

Economy mode

false

 

Economy mode: voltage quadratic dependent on frequency

EconomyMode

[1] Modelica.Electrical.MultiPhase.Functions.symmetricOrientationm

Modelica Standard Library

The component described in this topic is from the Modelica Standard Library. To view the original documentation, which includes author and copyright information, click here.

See Also

Electrical Library

Electrical Machines

Electrical Machines Utilities